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Artículos de revistas sobre el tema "Fragstats"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 2 de febrero de 2022

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1

Kwon, Oh-Sung, Jung-Hwa Ra, Ji-Na Ku y Jin-Hyo Kim. "Temporal-Spatial Analysis of Landscape Diversity using FRAGSTATS". Journal of the Korea Society of Environmental Restoration Technology 18, n.º 3 (30 de junio de 2015): 39–50. http://dx.doi.org/10.13087/kosert.2015.18.3.39.

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2

Chen, Benxin y Basil V. Iannone III. "FRAGSTATS: A Free Tool for Quantifying and Evaluating Spatial Patterns". EDIS 2020, n.º 6 (5 de noviembre de 2020): 9. http://dx.doi.org/10.32473/edis-fr431-2020.

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Human activities such as urbanization and agriculture have triggered rapid land cover change, resulting in the loss of natural ecosystems. Land managers managers seeking to plan effectively for future land use that preserves biodiversity and the valuable services provided by natural ecosystems must understand land cover change and its environmental impacts. Quantifying patterns of land cover change objectively in order to understand them can be difficult without the proper resources, however. This 9-page fact sheet written by Benxin Chen and Basil V. Iannone III and published by the UF/IFAS School of Forest Resources and Conservation introduces one such resource, a free software called FRAGSTATS. Readers will learn to create input data, run the FRAGSTATS software, and interpret outputs. A few basic concepts of landscape ecology and GIS are included, but this fact sheet is intended for readers with at least some GIS knowledge.
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3

Calvo-Obando, Ana y Edgar Ortiz-Malavasi. "Fragmentación de la cobertura forestal en Costa Rica durante los períodos 1997 – 2000 y 2000-2005". Revista Forestal Mesoamericana Kurú 9, n.º 22 (6 de septiembre de 2012): 10. http://dx.doi.org/10.18845/rfmk.v9i22.359.

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Se estudió el grado de fragmentación de la cobertura forestal de Costa Rica en las Unidades Fitogeográficas (UF) durante tres años: 1997, 2000 y 2005. Se calculó la tasa porcentual anual de cambio utilizando la fórmula propuesta por Puyravaud (2003). Se utilizó software que permitió trabajar tanto en formato vectorial como raster, tal como ArcView 3.3, ArcGis 9.3 y FRAGSTATS 3.3. Las métricas de fragmentación calculadas por el software FRAGSTATS 3.3 fueron área remanente, número de parches (NP), distancia media al vecino más cercano (MNN) y densidad de parches (PD). Durante el período 1997-2000 se deforestaron 9139 hectáreas, de las cuales el 54,8% se concentró en la UF 3a (llanuras de Tortuguero, tierras bajas), mientras que durante el período 2000-2005 se deforestaron 23699 hectáreas, de las cuales el 18,6% se concentró en la UF 3a (llanuras de Tortuguero, tierras bajas). Sin embargo se presentó recuperación de la cobertura forestal. Solamente durante el período 2000 - 2005 fueron detectados procesos de pérdida y recuperación de la cobertura forestal en forma simultánea.
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Cunha, Jéssica Stefane Alves, Ana Lícia Patriota Feliciano, Emanuel Araújo Silva, Luiz Carlos Marangon y Fabiana Estigarribia. "INFLUÊNCIA HIPSOMÉTRICA NA FRAGMENTAÇÃO EM REGIÕES SEMIÁRIDAS". Nativa 6 (17 de diciembre de 2018): 824. http://dx.doi.org/10.31413/nativa.v6i0.6209.

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A degradação da floresta nativa, em regiões secas, encontra-se em expansão devido a exploração da madeira e à conversão da vegetação em distintos usos. Assim, objetivou-se analisar a fragmentação da paisagem em áreas semiáridas e a influência do gradiente altitudinal nesse processo. Para tanto, as imagens RapidEye adquiridas no ano de 2014 foram segmentadas, identificadas e classificadas em Floresta e Outros usos, bem como confeccionados mapas categóricos para utilizar no software Fragstats e gerar dados para análise das métricas da paisagem. Os resultados dos parâmetros determinaram que as regiões secas possuem uma alta quantidade de fragmentos menores que cinco ha demonstrando um alto retalhamento. O ambiente Baixada é o mais prejudicado, diante da maior quantidade de fragmentos menores e da distância entre os mesmos, isso é devido a cobertura florestal desse ambiente está sob pressão sendo mais vulnerável à fragmentação, em virtude do cultivo agrícola e pastagem. De forma oposta se encontra o ambiente Chapada, no qual a classe Floresta comporta-se como a matriz da paisagem. Portanto, a altitude influencia o processo de fragmentação da vegetação nativa de regiões semiáridas, uma vez que ao aumentar a altitude também aumenta a conectividade entre os fragmentos.Palavras-chave: Análise da paisagem, métricas, Brasil, gradiente, fragstats. HYPSOMETRIC INFLUENCE IN FRAGMENTATION IN SEMI-ARID REGIONS ABSTRACT:The degradation of native forest, in dry regions, is expanding due to the exploitation of wood and the conversion of vegetation to different uses. Thus, the objective was to analyze the fragmentation of the landscape in semi-arid areas and the influence of the altitudinal gradient in this process. To do so, the RapidEye images acquired in the year of 2014 were segmented, identified and classified in Forest and Other uses, and also categorical maps were made to be used in the Fragstats software and generate data for analysis of the landscape metrics. The results of the parameters determined that the dry regions have a high amount of fragments smaller than five, demonstrating a high shredding. The Lowland environment is the most affected, due to the greater amount of smaller fragments and the distance between them, this is due to the forest cover of this environment is under pressure being more vulnerable to fragmentation, due to the agricultural cultivation and pasture. On the opposite side is the Plateau environment, in which the Forest class behaves as the matrix of the landscape. Therefore, altitude influences the fragmentation process of native vegetation of semiarid regions, since increasing the altitude also increases the connectivity between the fragments.Keywords: Landscape analysis, metrics, Brazil, gradient, fragstats.
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5

Raines, Gary L. "Description and comparison of geologic maps with FRAGSTATS—a spatial statistics program". Computers & Geosciences 28, n.º 2 (marzo de 2002): 169–77. http://dx.doi.org/10.1016/s0098-3004(01)00030-9.

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6

Choi, Jin-Young, Moon-Seong Kang, Seung-Jong Bae, Hak-Kwan Kim y Se-Woong Chung. "Analysis of Landscape Structure on the Impervious Cover of the Gap-Stream Watershed using FRAGSTATS". Journal of The Korean Society of Agricultural Engineers 52, n.º 4 (31 de julio de 2010): 53–61. http://dx.doi.org/10.5389/ksae.2010.52.4.053.

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7

Li, Xin, Ling Lu, Guodong Cheng y Honglang Xiao. "Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS". Journal of Arid Environments 48, n.º 4 (agosto de 2001): 521–35. http://dx.doi.org/10.1006/jare.2000.0715.

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8

Zatelli, Paolo, Stefano Gobbi, Clara Tattoni, Maria Giulia Cantiani, Nicola La Porta, Duccio Rocchini, Nicola Zorzi y Marco Ciolli. "Relevance of the Cell Neighborhood Size in Landscape Metrics Evaluation and Free or Open Source Software Implementations". ISPRS International Journal of Geo-Information 8, n.º 12 (13 de diciembre de 2019): 586. http://dx.doi.org/10.3390/ijgi8120586.

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Landscape metrics constitute one of the main tools for the study of the changes of the landscape and of the ecological structure of a region. The most popular software for landscape metrics evaluation is FRAGSTATS, which is free to use but does not have free or open source software (FOSS). Therefore, FOSS implementations, such as QGIS’s LecoS plugin and GRASS’ r.li modules suite, were developed. While metrics are defined in the same way, the “cell neighborhood” parameter, specifying the configuration of the moving window used for the analysis, is managed differently: FRAGSTATS can use values of 4 or 8 (8 is default), LecoS uses 8 and r.li 4. Tests were performed to evaluate the landscape metrics variability depending on the “cell neighborhood” values: some metrics, such as “edge density” and “landscape shape index”, do not change, other, for example “patch number”, “patch density”, and “mean patch area”, vary up to 100% for real maps and 500% for maps built to highlight this variation. A review of the scientific literature was carried out to check how often the value of the “cell neighborhood” parameter is explicitly declared. A method based on the “aggregation index” is proposed to estimate the effect of the uncertainty on the “cell neighborhood” parameter on landscape metrics for different maps.
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9

Jing, Juan Li y Yong Feng Wang. "Spatial and Temporal Changes of Landscape Pattern in Li River Basin". Advanced Materials Research 1065-1069 (diciembre de 2014): 2878–81. http://dx.doi.org/10.4028/www.scientific.net/amr.1065-1069.2878.

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Spatial and temporal changes of landscape pattern in Li River basin was analyzed based on Landsat TM and OLI data in 1991 and 2013. Maximum likelihood classification method was used to extract land use information in two periods. In FRAGSTATS platform, the characteristics of landscape types were quantitatively analyzed by selecting landscape index at class level and landscape level. Results showed: (1) the area of forest landscape increased significantly, while shrub and bare rock decreased obviously. (2) landscape types were characteristic of high inner homogeneity and low heterogeneity. (3) the evolution of landscape pattern was significantly affected by human activities and social factors.
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Dávila Rodríguez, Antonio, Luis Carlos Alatorre Cejudo y Luis Carlos Bravo-Peña. "Análisis de la evolución espacio-temporal del uso de suelo urbano en la metrópolis de Chihuahua". Economía Sociedad y Territorio 21, n.º 65 (17 de diciembre de 2020): 1–27. http://dx.doi.org/10.22136/est20211618.

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La presente investigación tiene como objetivo la monitorización del cambio en los patrones de distribución espacial del uso del suelo urbano que se ha presentado en la zona de presión intermunicipal de Chihuahua en el periodo 1995-2015. Se utilizó el software FRAGSTATS para el cálculo de las métricas de análisis de la ecología del paisaje. Los resultados indican que el crecimiento del suelo destinado a vivienda que se presentó en el periodo de estudio se encuentra en consonancia con el modelo de ciudad dispersa, caracterizado por la baja densidad edificatoria y la preponderancia del transporte privado por carretera.
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11

Silva Faria, Karla Maria y Rodrigo Antônio dos Santos. "Análise Espacial da Densidade de Fragmentos Remanescentes e da Estrutura da Paisagem na Sub-Bacia do Rio Caiapó – GO". Ateliê Geográfico 10, n.º 2 (13 de septiembre de 2016): 115. http://dx.doi.org/10.5216/ag.v10i2.38627.

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Resumo A Alta bacia do rio Araguaia já foi indicada como representante das transformações socioambientais apresentadas pelo Bioma Cerrado e atualmente os estudos quanto à avaliação da fragmentação tem ocorrido por sub-bacias hidrográficas fundamentado nos princípios teóricos metodológicos da Ecologia da Paisagem. O objetivo deste estudo foi analisar a densidade de fragmentos da sub-bacia do rio Caiapó e a estrutura da paisagem, avaliando o grau de degradação ambiental ou de conservação da vegetação remanescente. A metodologia envolveu o uso em ambiente SIG do clustering Kernel e quantificação da estrutura da paisagem com o Fragstats. Os resultados indicam que a bacia apresenta elevados índices de degradação ambiental, especialmente por predominar elevado número de fragmentos com área menor que 10 hectares e baixa proximidade entre as manchas remanescentes. Entretanto, a região das nascentes apresenta fragmentos mais contínuos e próximos destacando este setor como área prioritária para conservação e preservação.Palavras-chave: Bioma Cerrado, Fragmentação, degradação ambiental AbstractThe Upper Araguaia River Basin has already been recognized as a remarkable symbol of the intense social and environmental changes in the Cerrado Biome. Latest studies have analyzed fragmentation on small basins based on the principles of Landscape Ecology. In this sense, the objective was to analyze the landscape structure and the density of remaining fragments, evaluating the degree of environmental degradation of these fragments on Caiapó River Basin (Goiás State). The methodology consisted of calculating the Kernel clustering on GIS and quantifying the landscape structure on Fragstat. Results revealed the existence of a large number of small fragments (10ha) with high levels of environmental degradation degree, and relatively distant from each other. Furthermore, the larger fragments were clustered only in the surrounding of the water springs, highlighting these areas as priority for environment conservation and preservation.Keywords: Cerrado, fragmentation, environmental degradation ResumenLa alta Cuenca del Río Araguaia ha sido definida como un fiel representante de las transformaciones sociales y ambientales presentados por el Cerrado Brasilero. Actualmente los estudios se encuentran en la fase de evaluación de la fragmentación a partir de productos desarrollados por subcuencas y con base en los principios teóricos y metodológicos de la Ecología del Paisaje. El objetivo de este estudio fue analizar la densidad de fragmentos de la sub-cuenca del río Caiapó, la estructura del paisaje, y la evaluación del grado de degradación y/o conservación de la vegetación restante. La metodología consiste en el uso de la agrupación Kernel SIG y la cuantificación de la estructura del paisaje con FRAGSTATS. Los resultados indican que la cuenca tiene altos niveles de degradación ambiental, evidenciado por el predominio de fragmentos con área de menos de 10 hectáreas y baja proximidad entre los puntos restantes. Sin embargo, la zona de las nacientes presenta fragmentos más continuos y próximos, destacando este sector como un área prioritaria para la conservación y preservación.Palabras clave: Cerrado, la fragmentación, la degradación del medio ambiente
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12

Song, Hai Hong y Yun Feng Tan. "Landscape Pattern Analysis of Land Use in Low Mount Hilly Land of Harbin Eastern Suburb". Applied Mechanics and Materials 641-642 (septiembre de 2014): 514–18. http://dx.doi.org/10.4028/www.scientific.net/amm.641-642.514.

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This article analyzes the general characteristics and its causes of the landscape pattern of land use, taking the Tuanjie town of DaoWai district in Harbin as an example. Using GIS and Fragstats software to calculate a series of landscape index, the data show that Tuanjie town is given priority to with agriculture landscape, and the landscape patch connectivity is stronger; the overall landscape patch shape is complex, showing the human activities interfere significantly; and each patch type concentration and fragmentation is quite different. Therefore, based on the use of their own advantages, put forward reasonable suggestions to the landscape optimization of Tuanjie town land use.
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13

Liu, Siqi, Qing Yu y Chen Wei. "Spatial-Temporal Dynamic Analysis of Land Use and Landscape Pattern in Guangzhou, China: Exploring the Driving Forces from an Urban Sustainability Perspective". Sustainability 11, n.º 23 (26 de noviembre de 2019): 6675. http://dx.doi.org/10.3390/su11236675.

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Rapid urbanization is one of the most important factors causing land-use change, which mainly results from the orientation of government policies, adjustment of industrial structure, and migration of the rural population. Land use and land cover change (LUCC) is the natural foundation of urban development that is significantly influenced by human activities. By analyzing the LUCC and its inner driving force, as well as landscape pattern change, human activity and urban sustainable development can be better understood. This research adopted a geographic information system (GIS) and remote sensing (RS) technology to comprehensively analyze land use of Guangzhou, respectively, in 1995, 2005, and 2015. Fragmentation Statistics (FRAGSTATS) is the most authoritative software to calculate landscape metrics. Landscape pattern change was analyzed by FRAGSTATS. The results showed that urban land significantly increased from 16.33% in 1995 to 36.05% in 2015. Farmland greatly decreased from 45.16% in 1995 to 27.82% in 2005 and then slightly decreased to 25.10% in 2015. In the first decade, the non-agricultural conversion of rural land and the expansion of urban land was the dominant factor that led to the change. In the second decade, urban land had been supplemented through the redevelopment of low-efficiency land. The fragmentation of landscape patterns significantly increased from 1995 to 2005 and slightly decreased from 2005 to 2015. It indicated that the change in land use in the second decade was different from that in the first. This difference mainly resulted from three aspects: (1) urban development area and ecological conservation area were clearly defined in Guangzhou; (2) many small towns had developed into urban centers, and the scattered urban land gathered into these centers; (3) the establishment of greenway improved the connection of fragmented patches. After that, this study discussed land-use change and its causes and proposed the trend of urban development from the perspective of sustainability.
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14

Odindi, John, M. M. Ojoyi, O. Mutanga y E. M. Abdel-Rahman. "Analysing fragmentation in vulnerable biodiversity hotspots in Tanzania from 1975 to 2012 using remote sensing and fragstats". Nature Conservation 16 (18 de noviembre de 2016): 19–37. http://dx.doi.org/10.3897/natureconservation.16.9312.

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15

Midha, N. y P. K. Mathur. "Assessment of forest fragmentation in the conservation priority Dudhwa landscape, India using FRAGSTATS computed class level metrics". Journal of the Indian Society of Remote Sensing 38, n.º 3 (septiembre de 2010): 487–500. http://dx.doi.org/10.1007/s12524-010-0034-6.

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16

Ren, Xiao Juan y Xiao Jian Chen. "Landscape Ecological Pattern Evolution of ShenMu County in Northern Shaanxi Province". Advanced Materials Research 450-451 (enero de 2012): 1065–68. http://dx.doi.org/10.4028/www.scientific.net/amr.450-451.1065.

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In this paper, the evolution characteristics of landscape ecological pattern of Shenmu County are addressed based on the principles and methods of landscape ecology and the spatial analysis of GIS and Fragstats in order to maintain and improve the landscape pattern in this region as well as provide support for planning. Firstly, the typical TM / ETM images in 1989, 2002 and 2006 are pro-processed based on GIS software to analyze the land use / cover change process in Shenmu county, and then the change characteristics of landscape pattern are analyzed by landscape indicators. The results demonstrate that the regional differences among different landscape types enlarge gradually, the landscape fragmentation and heterogeneity increase constantly, and the landscape diversity and evenness decrease over the past years.
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17

Fang, Gang, Jian Yong Chen, Juan Yang, Qiang Zhao y Hai Min Su. "Dynamic Changes Analysis of Dangshan Landscape Pattern". Advanced Materials Research 356-360 (octubre de 2011): 2870–73. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2870.

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The article takes 2 TM images as the data source, supported by the Fragstats 3.3 and the ENVI 4.7 softwares, two remote sensing images are classified by the support vector machine method, selects the number of patches (NP), edge density (ED), patches density (PD), landscape shape index (LSI), perimeter area fractal dimension (PAFRAC), interspersion juxtaposition index (IJI), patch cohesion index (COHESION), Shannon's diversity index (SHDI), Shannon's evenness index (SHEI) and contagion index (CONTAG), using the landscape ecological principles and methods, analyzes the dynamic changes of Dangshan landscape patter in 1987-2009, with a view to Dangshan county land resources of reasonable planning and using, management, sustainable utilization, and the landscape pattern optimization configuration, provides the theory foundation and scientific basis.
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18

Zhang, Chun Peng, Jing Wei Liu y Cheng Yan. "Change of Landscape Pattern in Yalu-River Estuary Wetland". Advanced Materials Research 955-959 (junio de 2014): 4057–60. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.4057.

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Three phases of remote sensing image data of Yalu-river estuary wetland taken respectively in 1983、1995 and 2007 were interpreted though ARCGIS software and the change of landscape pattern was analyzed with three categories of indices from the landscape pattern and landscape levels by means of using FRAGSTATS software. Results show that the 1983-2007, the research area of wetland landscape changes drastically, wetland landscape made of natural wetlands to artificial wetland, wetland fragmentation degree deepening, artificial wetland distribution area expanded. During the study period, the influence of human activities on the wetland increase and increase in area of sea aquaculture is the main cause of the yalu estuary wetland area reducing, is also one of the main reasons for the region function of wetland degradation.
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Lamine, Salim, George P. Petropoulos, Sudhir Kumar Singh, Szilárd Szabó, Nour El Islam Bachari, Prashant K. Srivastava y Swati Suman. "Quantifying land use/land cover spatio-temporal landscape pattern dynamics from Hyperion using SVMs classifier and FRAGSTATS®". Geocarto International 33, n.º 8 (10 de abril de 2017): 862–78. http://dx.doi.org/10.1080/10106049.2017.1307460.

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TORRES, DIANA C., BRIGITTE BAPTISTE y CLARA CARO. "PROPUESTA DE GESTIÓN TERRITORIAL DEL COMPLEJO ECOLÓGICO ASOCIADO CON LA LAGUNA CARIMAGUA, A PARTIR DE UNA EVALUACIÓN DE SERVICIOS ECOSISTÉMICOS: MUNICIPIO DE PUERTO GAITÁN–META". Ambiente y Sostenibilidad 4, n.º 1 (18 de febrero de 2015): 79. http://dx.doi.org/10.25100/ays.v4i1.4316.

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<p>El complejo ecológico asociado a la laguna Carimagua localizada en el departamento del Meta, Colombia es considerada una estrella fluvial de importancia binacional asociada al a cuenca del Orinoco. Está zona se caracteriza por la prestación de servicios ecosistémicos de gran importancia para garantizar la sostenibilidad de las comunidades, los cuales fueron evaluados desde los componentes social, ecológico y económico con el fin de generar un mecanismos de gestión territorial fundamentado en la relación socioecosistémica buscando la Conservación de la zona mediante la propuesta de creación de un área protegida en el marco del decreto 2372 de 2010 bajo la categoría de Distrito de manejo integrado.</p><p><strong>Palabras claves:</strong> Servicios ecosistémicos, Laguna Carimagua, Fragstats, Valoración contingente y Percepciones sociales.</p>
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Uuemaa, Evelyn, Jüri Roosaare y Ülo Mander. "Landscape metrics as indicators of river water quality at catchment scale". Hydrology Research 38, n.º 2 (1 de abril de 2007): 125–38. http://dx.doi.org/10.2166/nh.2007.002.

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We investigated the relationship between land use parameters and FRAGSTATS-based landscape metrics (Edge Density, Patch Density, Mean Shape Index, Mean Euclidean Nearest Neighbour Index, Contagion, Patch Richness Density and Shannon's Diversity Index) and nutrient/organic-matter-based water quality indicators (BOD7 and CODKMnO4 values, total-N and total-P concentrations in water) in 24 catchments with various land use patterns in Estonia, using the CORINE Land Cover Map (1:100 000). Multiple regression analysis showed that, for BOD7, total-N and total-P, the most important predictor was the proportion of urban areas, but landscape metrics also had a significant relationship with water quality. Mean Shape Index and Contagion were the most important predictors for CODKMnO4. The knowledge that land use and landscape configuration impact water quality can be used in establishing and implementing water management plans in Europe.
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Kai, Nan, Ting Ting Huang, Song Mei Ma, Xuan Huang y Rui Rui Dong. "Spatial and Temporal Change Analysis of Landscape Pattern of the Ebinur Lake Wetland". Applied Mechanics and Materials 644-650 (septiembre de 2014): 5391–94. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.5391.

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We used three TM images of Ebinur lake wetland: 1990, 2003 and 2010 (August) as the basis data source, We basing on the Markov transfer matrix to analyze the change in value and its transfer tendency of each land use type, and using Fragstats 3.3 software to analyze spatial and temporal change of landscape pattern of our study area in nearly 20 years.Our results show : (1) The land use change of the Ebinur lake wetland is significant: both cultivated land and residential land have expanded significantly, vegetation degraded, and the lake areas shrinked; (3)During 1990-2010, the number of landscape patches increased, the landscape diversity index and fragmentation index increased too, the shape of landscape patches tend to fragment, and the contagion index also declined constantly, which all indicating a fragment trend of landscape pattern of Ebinur lake wetland.
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23

Bungnamei, Khangsembou y Anup Saikia. "Park in the periphery: Land use and land cover change and forest fragmentation in and around Yangoupokpi Lokchao Wildlife Sanctuary, Manipur, India". Geographia Polonica 93, n.º 1 (2020): 107–20. http://dx.doi.org/10.7163/gpol.0165.

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This study documents the spatio-temporal land use and land cover dynamics of Yangoupokpi Lokchao Wildlife Sanctuary (YLWLS) in Manipur, India. Landsat imageries at three points of time spanning 38 years (1978, 2000 and 2016) were taken into account. Supervised image classification techniques were employed. Fragstats software was used to derive five landscape metrics, namely, class area (CA), number of patches (NP), largest patch index (LPI), percentage of landscape (PLAND) and mean patch size (MPS), to quantitatively assess the level of landscape fragmentation in the YLWLS. Dense and moderately dense forests decreased markedly during 1978-2000 from 46.5% to 40% and 38% to 28% of the total geographical area, respectively. However, between 2000 and 2016, the sanctuary managed to gain 840 ha of dense forest through various afforestation activities. The overall change in YLWLS during 1978-2016 indicates a substantial transition of dense and moderately dense forests.
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Giordano, Francesca y Alberto Marini. "A Landscape Approach for Detecting and Assessing Changes in an Area Prone to Desertification in Sardinia (Italy)". International Journal of Navigation and Observation 2008 (15 de abril de 2008): 1–5. http://dx.doi.org/10.1155/2008/549630.

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Land degradation and desertification processes represent a serious problem in many areas of Sardinia (Italy), as in the Nurra region where urbanization, overgrazing, and fires have induced environmental degradation and rapid land-use change. In this study, using satellite remote sensing and geographical information system, landcover and landscape change dynamics were investigated. Comparing two Landsat-5 Thematic Mapper, it was possible to assess landcover transformations, and with the FRAGSTATS software it was possible to quantify the changes of landscape characteristics in the Nurra region over a 10-years period. The images were classified into seven landcover types, and a stepwise indicator approach was adopted. The results show a decrease in cropland and an increase of forestland and urban areas. The overall change was estimated to be about 2.5% of the total study area, with two most frequent landcover conversion types: cropland to urban areas and cropland to forestland.
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Han, Zhao Qin, Jing Ye, Zhen Wang, Jie Liu y Shu Xia Yu. "Analysis on Evolution of Landscape Pattern in Dianchi Basin Based on RS and GIS". Advanced Materials Research 291-294 (julio de 2011): 3419–23. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.3419.

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With the support of RS, GIS and FRAGSTATS techniques, the landscape pattern has been analyzed quantitatively in Dianchi basin by 16 commonly used landscape metrics, based on remote sensing images of 1988, 1990, 1994, 1999, 2002 and 2008. After performance of principal component analysis (PCA) on the 16 landscape metrics, three principal components (PCs) were generalized: spatial aggregation of landscape patches, landscape fragmentation and landscape diversity. Then, the characteristics and evolution of landscape pattern in Dianchi basin have been explored at the landscape level. The results showed, that, from 1988 to 1994, the landscape fragmentation was serious and the level of diversity was fluctuant. And for some kinds of landscape patches, the integrity was much undermined, the spatial distribution was scattered and the degree of aggregation was fallen. From 1994 to 2008, the degree of aggregation between patches increased gradually. The situation of landscape fragmentation was under control. And, the land use types had a tendency towards diversification and homogenization.
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26

Vidolin, Gisley Paula, Daniela Biondi y Adilson Wandembruck. "Análise da estrutura da paisagem de um remanescente de floresta com Araucária, Paraná, Brasil". Revista Árvore 35, n.º 3 (junio de 2011): 515–25. http://dx.doi.org/10.1590/s0100-67622011000300014.

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Este estudo teve como objetivo analisar a estrutura da paisagem da Fazenda Lageado Grande (FLG), área com 3.136,32 ha, localizada em General Carneiro, Palmas e Bituruna, PR, na porção centro-sul do Estado do Paraná. A análise foi baseada no uso de métricas da paisagem do software Fragstats 3.3, mediante a utilização do programa Arc Map 9.2, com cálculos de proporção de áreas de conexão na paisagem. As análises mostraram que a FLG possuía matriz de cobertura do solo predominantemente florestal com espécies nativas; os fragmentos apresentavam, de maneira geral, formas retangulares, ou seja, estavam mais sujeitos aos efeitos de borda; havia redução de mais da metade da área original da Fazenda quando se considera efeito de borda, e os fragmentos de mesma classe estavam próximos uns dos outros, favorecendo a conectividade estrutural da paisagem. Os fragmentos dos ambientes nativos, mesmo que intensamente explorados e alterados, dada a sua continuidade florestal, podem ser considerados áreas de alto valor de conservação da biodiversidade.
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27

Duengkae, Prateep, Pongsit Srikhunmuang, Aingorn Chaiyes, Warong Suksavate, Nantachai Pongpattananurak, Supaporn Wacharapluesadee y Thiravat Hemachudha. "Patch metrics of roosting site selection by Lyle’s flying fox (Pteropus lylei Andersen, 1908) in a human-dominated landscape in Thailand". Folia Oecologica 46, n.º 1 (1 de mayo de 2019): 63–72. http://dx.doi.org/10.2478/foecol-2019-0009.

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AbstractThe association between patch metrics and roosting site (n = 31) suitability of Lyle’s flying fox (Pteropus lylei) in 26 Central Eastern and Western provinces of Thailand was quantified. Land use classes with 90-m resolution were identified based on various vegetation and land cover types to calculate patch metrics using FRAGSTATS. Then, Maximum Entropy Modeling (MaxEnt) was performed using patch metrics covariates to produce a predictive potential distribution map. The results indicated that patch contiguity (contiguity index, 63.7%), patch area (29.3%), and patch shape complexity (shape index, 5.7%) are the most influential patch metrics, all of which have negative effects on roosting site suitability. In total, 13,222 small patches were considered highly suitable patches, with a mean area of 0.921 ± 0.698 (SD) ha, which accounted for 122,090 ha (2.04%) of the study area. Roosting sites predicted from the model were consistently associated with occurrences of roosting sites observed in temples; such habitats likely provide shelter from external threats for colonies roosting in a human-dominated landscape.
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28

Cunha, Jéssica S. A., Ana Lícia P. Feliciano, Emanuel A. Silva y Luiz Carlos Marangon. "Landscape Structure at Different Altitudes in Dry Areas". Journal of Agricultural Science 10, n.º 12 (15 de noviembre de 2018): 279. http://dx.doi.org/10.5539/jas.v10n12p279.

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The objective was to analyze the forest landscape structure of fragments at different altitudes in dry region. In order to do so, RapidEye images acquired in the year of 2014 were segmented, identified the Forest and Other uses classes and classified. Categorical maps were made and inserted in raster format in the Fragstats software, and text files were generated for calculations of class-level metrics and landscape-wide and then analyzed. The results of the parameters determined that the most affected and fragmented environments are those with lower altitudes, because of the forest cover of these environments is under strong pressure, since they are surrounded mainly by the Agropecuarian class, providing more susceptibility to fragmentation and external influences. Therefore, using the metrics together it was verified that there is a high shredding and this shredding has relation with the altitudinal gradient, since the lower the altitude, the lower the connectivity and thus the lower forest cover.
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29

De Magalhães, Simone Rodrigues, Carlos Antonio Alvares Soares Ribeiro, João Carlos Martins De Azevedo, José Manuel Correia dos Santos Ferreira, Paulo Alexandre Martins Fernandes, Carlos Alberto Rodrigues Loureiro Da Silva y Helena Margarida Pires Pinheiro. "COMPORTAMENTO DO FOGO EM DIFERENTES PERÍODOS E CONFIGURAÇÕES DE UMA PAISAGEM NO NORDESTE DE PORTUGAL". Ciência Florestal 27, n.º 2 (29 de junio de 2017): 457. http://dx.doi.org/10.5902/1980509827728.

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Neste trabalho aborda-se a importância do planejamento do uso e ocupação do solo, e do manejo dos sistemas florestais na redução do perigo de incêndio, analisando-se o comportamento do fogo em relação às alterações na paisagem da Deilão, nordeste de Portugal. Foram utilizadas cadeias de Markov e modelos de autômatos celulares como metodologia para projetar a paisagem no futuro. FlamMap foi utilizado para simular o comportamento do fogo. De acordo com as métricas da paisagem obtidas no Fragstats, observou-se que os cenários e projeções em Deilão têm uma tendência à simplificação da paisagem, o que pode facilitar a ocorrência de incêndios maiores e mais graves. A análise dos resultados indicou uma tendência ao aumento do perigo de incêndios na região, em grande parte, ocasionado pela expansão de plantações contínuas de florestas. Para evitar tais impactos, o manejo florestal e ordenamento da paisagem devem ser modificados a fim de se reduzir o acúmulo de materiais combustíveis.
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30

Liang, Xiong Wei, Li Wang, Fang Ma, Dan Shan, Xiao Feng Jiang y Zhe Li. "Determining the Extent and Condition of Riparian Zones in Alternative Drinking Water Supply of Xiquanyan Reservoir, China". Advanced Materials Research 1073-1076 (diciembre de 2014): 1756–59. http://dx.doi.org/10.4028/www.scientific.net/amr.1073-1076.1756.

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Riparian buffer zones (RBZ) plays important roles in the quality of surface water, the width and the connection of RBZ are related with the pollution removal effect. This paper evaluates the RBZ conditions in the basin of Xiquanyan reservoir which is an alternative drinking water supply reservoir. Using the software of ENVI to extract the RBZ distribution map from the image of Landsat 8; GIS and Fragstats were used to evaluate the status of RBZ. Divide the basin of Xiquanyan reservoir in to four divisions. The river lengthy, areas, average width of RBZ, SD, AI, and CONTAG were identified in each division. The result shows: (1) The total area of RBZ in the basin of Xiquanyan reservoir is adequate; however, the distribution of RBZ is uneven, part of it is too large, part of it is too small; (2) the connection of RBZ is good in part of the basin, it needs to improve the quality in the fourth division, western part of the Xiquanyan reservoir.
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31

Fan, Fang Ling, Chao Fu Wei y Shuai Yin. "Land Consolidation-Induced Effects on Local Landscape Patterns in Hilly and Mountainous Southwestern China". Advanced Materials Research 356-360 (octubre de 2011): 2980–90. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2980.

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Land Consolidation Project (LCP), as a kind of drastic disturbance by human intentional activities, significantly changes landscape pattern. The information of landscape pattern from land-use map and planning map (scale: 1:2000) were extracted by taking the land consolidation project in hilly and mountainous area of Bashan Town, Zhong County, Chongqing, Southwestern China as an example. The whole landscape structure and each land use type class level metrics of landscape pattern were calculated. Then their effects on local landscape patterns were estimated by Fragstats for Arcview. Sixteen metrics had been chosen to describe the changes before and after LCP. The total area of the research region was 1037.45 hm2, and arable land area accounted for 80.95%, therefore heterogeneous map was mosaic. Land Leveling Project (LLP) got each patch of arable land expanded. The fragmentation was sharply reduced .The complex of patches edge was decreased. The shape of each field was ruled. And all above were beneficial for the growth of crop and plantation, especially in a large scale. LCP could reallocate fragment parcels and improve agricultural conditions.
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32

Barros, Marcelo Paes de. "MÉTRICAS DA PAISAGEM COMO FERRAMENTA DE AVALIAÇÃO DOS EFEITOS DA URBANIZAÇÃO NA ESTRUTURA DA PAISAGEM: O CASO DE CUIABÁ, BRASIL". Revista Gestão & Sustentabilidade Ambiental 7, n.º 4 (12 de diciembre de 2018): 411. http://dx.doi.org/10.19177/rgsa.v7e42018411-432.

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O desenvolvimento da agricultura em larga escala em regiões de cerrado no Mato Grosso, nos anos 70, trouxe um processo de urbanização rápido e não planejado nas cidades do estado, resultando em consequências negativas, como a degradação ambiental. Este estudo teve como objetivo avaliar as mudanças da paisagem urbana, resultado desse processo, de 1980 a 2010, em Cuiabá, Brasil. Métricas em nível de paisagem, incluindo métricas de área, densidade e tamanho de retalhos, aresta, forma, vizinho mais próximo e complexidade, calculadas usando o programa, de análise de estrutura de paisagem, Fragstats, com base na interpretação de imagens Landsat, foram usadas para descrever mudanças na estrutura da paisagem causadas pela urbanização. Os resultados mostraram que a área dos fragmentos de vegetação diminuiu de 20,4%, nestes 30 anos, sendo maior entre os anos de 1980 e 1995. A paisagem tornou-se ecologicamente mais fragmentada e menos complexa devido à linearização da forma urbana, com blocos de rua regulares e espaços verdes cultivados, como parques urbanos, jardins e ruas, resultado de modificações humanas na estrutura da paisagem.
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33

Narce, M., R. Meloni, T. Beroud, A. Pléney y J. C. Ricci. "Landscape ecology and wild rabbit (Oryctolagus cuniculus) habitat modeling in the Mediterranean region". Animal Biodiversity and Conservation 35, n.º 2 (diciembre de 2012): 277–83. http://dx.doi.org/10.32800/abc.2012.35.0277.

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Landscape modification is one of the reasons for the decrease in rabbit populations. The objective of this study was to model wild rabbit habitat using landscape ecology to create a diagnosis method able to assess habitat quality at a large scale. Rabbit presence/absence was recorded on 536 plots of 1 ha. Spotlight transect counts indicated a low relative abundance (KIA = 2.3 rabbits/km). We produced a land use map with metric precision using remote sensing. Water, bare soil, herbaceous, shrubs and trees were identified. Landscape structure and diversity were evaluated using variables available in FRAGSTATS. A logistic regression was performed to assess the link between rabbit presence/absence and landscape structure. Our results indicate that a suitable habitat has a high diversity, a medium number of patches and a small proportion of shrubs. These results could be used to diagnose the landscape prior to any management action to enhance rabbit populations and conversely be helpful as a tool of integrated control in the cases of local outbreaks with agricultural damages.
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34

Xia, Ping Juan y Fang Qing Chen. "Landscape Pattern of the Xiangjiaba Hydropower Project’ Disturbed Area in 2012 Based on the GIS Analysis". Advanced Materials Research 955-959 (junio de 2014): 3854–58. http://dx.doi.org/10.4028/www.scientific.net/amr.955-959.3854.

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The landscape pattern is often obviously changed at the disturbed area of the large hydropower projects. The landscape pattern of Xiangjiaba hydropower project was analyzed using the geographic information systems technology and the method of landscape pattern index to uncover the effect of hydropower project. Based on the data of GPS, aerial photography pictures and field investigation at Xiangjiaba hydropower’ disturbed area in 2012, the map of landscape pattern and land use was drawn using ArcGIS 10.0, and landscape pattern index was figured out using FRAGSTATS 4.0. The result showed that the total landscape was heterogeneous with 10 kinds of patch types at the disturbed area of Xiangjiaba hydropower project. These patches were ranked by area as: woodlands> farmland> township and village > river >engineering land > shrubs> abandoned land> artificial grassland> waters > open forests. The dominated landscape patch was woodlands with the largest area. The artificial grassland, farmland, engineering land, and woodland were fragmented seriously with high under the influence of human activity and natural condition.
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35

LIANG, Huilin, Di CHEN y Qingping ZHANG. "ASSESSING URBAN GREEN SPACE DISTRIBUTION IN A COMPACT MEGACITY BY LANDSCAPE METRICS". Journal of Environmental Engineering and Landscape Management 25, n.º 1 (21 de marzo de 2017): 64–74. http://dx.doi.org/10.3846/16486897.2016.1210157.

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The pattern and structure of urban green space (UGS) plays a significant role in the landscape and ecological quality (LEQ) of UGS, especially in a compact city with limited space. Based on landscape metrics, this study proposes an innovative method to quantify the effects of UGS pattern and structure on LEQ. Taking Shanghai, China as the study area, we calculated all landscape-level spatial metrics in FRAGSTATS, used correlation analysis in SPSS for data reduction, and adopted factor analysis and cluster analysis to statistically analyze the metrics and assesse the LEQ of UGS. These methods bridge the research gap of UGS distribution assessment for LEQ value by landscape metrics. Results showed that new districts usually have higher LEQ of UGS than old towns. Of the 17 districts in Shanghai, Chongming has the highest LEQ of UGS and Hongkou has the lowest. For the UGS pattern and structure, the eight old towns are similar, in contrast to the new districts of Chongming and Pudong, which are more dissimilar than the other districts for LEQ of UGS. The findings could help compact cities having limited UGS to develop and achieve better LEQ.
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36

Ampofo, Steve, Isaac Sackey y Boateng Ampadu. "Landscape Changes and Fragmentation Analysis in a Guinea Savannah Ecosystem: Case study of Talensi and Nabdam Districts of the Upper East region, Ghana". Journal of Geography and Geology 8, n.º 1 (24 de febrero de 2016): 41. http://dx.doi.org/10.5539/jgg.v8n1p41.

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Landcover change is an observed natural change dynamics at both the local and regional levels. However, its scales are exacerbated by human interaction with its natural environment. The study examines these spatio-temporal changes in landcover and the level to which the change is accompanied by fragmentation of the identifiable cover types in the Talensi and Nabdam districts in Northern Ghana. The research uses digital classification of Landsat satellite imagery for 1999 and 2007 to produce the cover types which results in good accuracy levels of 66.39% and 63.03% respectively. Fragmentation analysis of the landscape was computed using FRAGSTATS® software for categorical maps obtained from the classified landcover maps for the two years. All cover types increased marginally. However, Bare areas decreased by as much as 17.17% and that of water decreased from 3% to 1%. The changing landscape involving conversions within and among various cover types is accompanied by fragmentation in all classes but more pronounced in the Bare class. The Bare class type which has more patches corresponds to the class with increased cover size and rather strangely decreases in the mean path size.
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37

Chmielewski, Szymon, Tadeusz J. Chmielewski y Piotr Tompalski. "Land Cover and Landscape Diversity Analysis in the West Polesie Biosphere Reserve". International Agrophysics 28, n.º 2 (1 de abril de 2014): 153–62. http://dx.doi.org/10.2478/intag-2014-0003.

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Abstract The aim of this research was to present the land cover structure and landscape diversity in the West Polesie Biosphere Reserve. The land cover classification was performed using Object Based Image Analysis in Trimble eCognition Developer 8 software. The retrospective land cover changes analysis in 3 lake catchments (Kleszczów, Moszne, Bia³eW³odawskie Lakes)was performed on the basis of archival aerial photos taken in 1952, 1971, 1984, 1992, 2007 and one satellite scene from 2003 (IKONOS).On the basis of land cover map structure, Shannon diversity index was estimated with the moving window approach enabled in Fragstats software. The conducted research has shown that the land cover structure of the West Polesie Biosphere Reserve is diverse and can be simply described by selected landscape metrics. The highest level of land cover diversity, as showed by Shannon Diversity Index, was identified in the western part of the West Polesie Biosphere Reserve, which is closely related to the agricultural character of land cover structure in those regions. The examples of three regional retrospective land cover analyses demonstrated that the character of land cover structure has changed dramatically over the last 40 years.
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38

Fynn, Iris E. M. y James Campbell. "Forest Fragmentation Analysis from Multiple Imaging Formats". Journal of Landscape Ecology 12, n.º 1 (1 de enero de 2019): 1–15. http://dx.doi.org/10.2478/jlecol-2019-0001.

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Abstract In landscape ecology, forest fragmentation studies with emphasis on effects of scale on fragmentation patch metrics, is an important research area. With increasing availability of satellite data at multiple scales and varied resolutions, it has become important to understand effects of comparing fragmentation metrics acquired from coarse resolution images and those from finer resolution imagery. This is crucial because coarse resolution images such as Landsat imagery, are relatively easier to find because of their cheaper costs, availability and broad coverage, whereas finer resolution imagery is more expensive and therefore, spans only small areas. This paper examines effects of varied spatial resolutions on common fragmentation metrics using Landsat, Sentinel, National Agricultural Imagery Program (NAIP) and Unmanned Aerial Vehicle (UAV) imagery obtained in November, 2017 of the Whitethorne area near Blacksburg, Virginia. The images are analyzed using FRAGSTATS and ArcGIS software programs. The results show significant differences in fragmentation metrics despite simultaneous acquisition of all images in the same area. Discussion of results obtained in this study centers on the reasons for this disparity, and examines uses of imagery of different resolutions for forest fragmentation analysis.
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39

Perlandim Ramos, Alexander Webber, Edinéia Aparecida Dos Santos Galvanin y Sandra Mara Alves da Silva Neves. "ANÁLISE DA FRAGMENTAÇÃO DA PAISAGEM DO MUNICÍPIO DE NOVA MARILÂNDIA-MT, BRASIL". Caminhos de Geografia 21, n.º 75 (31 de mayo de 2020): 240–50. http://dx.doi.org/10.14393/rcg217551636.

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Este trabalho tem como objetivo analisar o estado de fragmentação da paisagem do município de Nova Marilândia – Mato Grosso, visando a geração de informações que subsidiem a proposição de estratégias de planejamento para conservação e restauração da funcionalidade da paisagem. Os mapas de cobertura vegetal e usos da terra foram gerados a partir de imagens dos satélites Landsat 5, dos anos de 1998 e 2008, e Landsat 8, de 2018. Foram realizados os processos de georreferenciamento, recorte e classificação. A aplicação dos cálculos estatísticos relativos à estrutura da paisagem foi operacionalizada no programa Fragstats. No período de análise, houve alta antropização na paisagem do município, implicando na redução das áreas das classes de Vegetação Natural Florestal (10,49%) e Formação Savânica (20,95%), e um crescimento das áreas de Pastagem (36,00%) e Agricultura (103,74%), resultando no aumento da fragmentação da paisagem municipal. Concluiu-se que ocorreu um aumento da complexidade das formas e nas distâncias entre os fragmentos de vegetação nativa e a redução da conectividade funcional, ocasionada pelo crescimento expressivo das áreas de Agricultura e Pastagem, que se constituem como as principais bases econômicas do município.
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40

Kim, Jun-Hyun, Wei Li, Galen Newman, Sung-Ho Kil y Sun Young Park. "The influence of urban landscape spatial patterns on single-family housing prices". Environment and Planning B: Urban Analytics and City Science 45, n.º 1 (15 de agosto de 2016): 26–43. http://dx.doi.org/10.1177/0265813516663932.

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Many empirical studies assessing the economic benefits of urban green space have continually documented that green space tends to increase both value and sale price of nearby residential properties. Previous studies, however, have not fully captured the quality of neighborhood level landscape spatial patterns on housing prices. To fill this literature gap, this study examined the association between landscape spatial patterns of urban green spaces and single-family home sale transactions using a spatial regression model. The research was conducted through the analysis of 11,326 housing transaction records from 2010 to 2012 in Austin, TX, USA. Variables measuring the structural, locational and neighborhood characteristics of housing were coupled with Geographic Information Systems, remote sensing and FRAGSTATS to calculate several landscape indices measuring the quality of existing landscape spatial patterns. After controlling for any spatial autocorrelation effects, we found that that larger tree and urban forest areas surrounding single-family homes positively contributed to property values, while more fragmented, isolated and irregularly shaped landscape spatial patterns resulted in the inverse. The results of this research increase awareness of the role of urban green spaces while informing community design/planning practices about the linkages between landscape spatial structure and economic benefits.
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41

Locatelli, Marcela Minatel, Bruna Lara Arantes, Demóstenes Ferreira da Silva Filho, Jefferson Lordello Polizel y Maria De Assunção Ribeiro Franco. "PANORAMA ATUAL DA COBERTURA ARBÓREA DA CIDADE DE SÃO PAULO". Revista LABVERDE 9, n.º 1 (10 de abril de 2018): 29. http://dx.doi.org/10.11606/issn.2179-2275.v9i1p29-48.

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Nas cidades, cada vez mais, espaços vegetados são substituídos por asfalto e construções, principalmente nas regiões centrais, acarretando diversos problemas na estrutura da cidade e na preservação da biodiversidade urbana. O presente estudo teve como objetivo quantificar a cobertura arbórea da cidade de São Paulo/SP, discutindo suas implicações na paisagem urbana. Foi quantificado a cobertura arbórea de um trecho amostral da cidade de São Paulo/SP, através de imagens de Satélite Wordview 2 e software QuantumGIS, gerando o Índice de Vegetação (TVI) por distrito. A partir do TVI foram obtidas a área e a porcentagem de vegetação de cada distrito no software Fragstats. Os mais arborizados são: Cachoeirinha, Tremembé, Mandaqui, Vila Andrade, e Morumbi; e os menos são: Limão, Santa Cecília, Cambuci, Sé e Brás. Somente dois distritos apresentam uma porcentagem de vegetação ideal prevista pela literatura. A cobertura arbórea parece estar associada ao nível de renda da região, sendo que os bairros nobres apresentam, em geral, maior porcentagem vegetação. Foi apresentado um cenário ambiental para a área de estudo, visando o aumento da porcentagem de cobertura arbórea e a conexão dos espaços vegetados existentes.
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42

Wang, Xuhui, Kewei Liu, Kai Wang, Jian Gong, Yanjun Wang y Yajiang Fan. "Spatiotemporal Dynamics of Urban Parks and Their Driving Forces in Xi'an, China from 1949 to 2015". Open House International 42, n.º 3 (1 de septiembre de 2017): 112–15. http://dx.doi.org/10.1108/ohi-03-2017-b0023.

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Urban parks play a key role in recreational activities, public health, and ecosystem services in urban areas. Using GIS and Fragstats, this study investigated the spatiotemporal dynamics of urban parks in Xi'an, China from 1949 to 2015 and the corresponding driving forces. The results show that the number and area of parks in Xi'an increased constantly during this period, especially from 2000 to 2015. Up to 2015, small green spaces, usually adjacent to streets, occupied the largest proportion among all types of parks. Archaeological parks were the largest in total area, but wetland parks were leading in average size of a single park. The density of parks was negatively correlated with their distance to the Clock Tower at the center of Xi'an. The dynamics of urban parks in highly urbanized areas were significantly different from that of their counterparts in suburban areas. Driving forces such as urban planning, urbanization and green space policies, and milestone events in the city's development jointly had a great effect on the distribution of parks in Xi'an. The research outcomes will support the upcoming Green Space Planning of Xi'an and benefit the pursuit of sustainability and human wellbeing.
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43

Yao, Yang, Sen Zhang, Yuqing Shi, Mengqi Xu, Jiaquan Zhang, Yongming Zhang y Jun Zhao. "Landscape Pattern Change of Impervious Surfaces and Its Driving Forces in Shanghai during 1965–2010". Water 13, n.º 14 (16 de julio de 2021): 1956. http://dx.doi.org/10.3390/w13141956.

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Rapid urbanization influences the landscape pattern of impervious surfaces, and potentially affects surface water quality. Using ArcGIS and Fragstats, this study analyzed the temporal change of the landscape pattern of impervious surfaces in Shanghai over the past 45 years, and its driving forces and impact on water quality were also analyzed. The results show that both low and high impervious surfaces showed different degrees of expansion, and as a result, the pervious surfaces and water area reduced by 40.1% and 13.8%, respectively. It proves that the fragmentation and diversity of impervious surfaces in Shanghai notably increased in the past decades, and especially the low and high impervious surfaces show substantial changes. The primary driving forces of the landscape pattern change are population density, unit area Gross Domestic Product (GDP), and the percentage of primary industry. The result of Redundancy analysis (RDA) is that the explanatory ability of landscape pattern to water quality variations decreased from 68.7% to 46.4% in the period 2000–2010. It should be stressed that the contribution of the configuration of impervious surfaces to water quality variation is less than that of the percentage of impervious surfaces.
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44

Cemin, Gisele, Eduardo Perico y Claudete Rempel. "Composição e configuração da paisagem da sub-bacia do arroio jacaré, Vale do Taquari, RS, com ênfase nas áreas de florestas". Revista Árvore 33, n.º 4 (agosto de 2009): 705–11. http://dx.doi.org/10.1590/s0100-67622009000400013.

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A conversão de áreas com cobertura florestal contínua por fragmentos florestais vem contribuindo para a diminuição da diversidade biológica, em função da perda de micro-habitats únicos, mudanças nos padrões de dispersão e migração, isolamento de habitats e erosão do solo. A solução desses problemas está intimamente vinculada ao planejamento e manutenção de bacias hidrográficas. A sub-bacia do Arroio Jacaré, localizada no Vale do Taquari, RS, compreende uma área de 538,98 km², onde estão parcial ou totalmente inseridos nove municípios. Essa bacia se encontra em uma região de ecótono entre as formações vegetais do tipo Floresta Estacional Decidual (FED) e Floresta Ombrófila Mista - Mata de Araucária (FOM). Foram elaboradas e analisadas informações relacionadas às características estruturais das classes de mata na região (FED, FOM e vegetação secundária), utilizando-se imagem do satélite Landsat 7 ETM+, referente à passagem 04/02/2002 e software de Sistemas de Informações Geográficas (SIG) Idrisi, 3.2, software de Ecologia de Paisagem Fragstats 3.3. Os resultados indicaram que a região apresenta aproximadamente 50% de suas matas nativas conservadas ou em estágio de regeneração, porém de forma altamente fragmentada, com 87,82% dos fragmentos menores que 1 ha. Considerando um efeito de borda de 50 m, em torno de 40% dos fragmentos ainda apresentam área nuclear.
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45

Ruiz, Vannia, Juan Munizaga y Alejandro Salazar Burrows. "Plantaciones forestales y su extensión hacia áreas urbanas en el área metropolitana de Valparaíso y su relación con el aumento de incendios forestales". Investigaciones Geográficas, n.º 54 (29 de diciembre de 2017): 23. http://dx.doi.org/10.5354/0719-5370.2017.48040.

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A partir de la década de los 70 en Chile central, la expansión de las plantaciones forestales ha sido una de las principales causas de la modificación del paisaje, siendo influenciada por los cambios de cobertura de la superficie terrestre. Considerando el contexto nacional de los incendios forestales que ocurrieron durante el verano de 2017, existe una opinión generalizada que la ocurrencia de estos eventos está relacionada con la proximidad y el acercamiento de las plantaciones a las áreas urbanas, especialmente en el Área Metropolitana de Valparaíso (AMV). Desde esta perspectiva se analizó la disminución dela distancia entre la expansión de las plantaciones forestales y la expansión del suelo urbano en el AMV utilizando una clasificación supervisada de imágenes Landsat para los años 1989 y 2015. Adicionalmente se realiza un análisis sobre el grado de severidad de los incendios y se calculan métricas del paisaje por medio del programa FRAGSTATS. Los principales resultados muestran un aumento de superficie para las plantaciones forestales para el año 2015, duplicando su tamaño con respecto al 1989. A partir de las métricas estudiadas se observó una mayor heterogeneidad en el paisaje. Con respecto al índice de severidad se observa un mayor grado en plantaciones forestales con respecto a otras coberturas como agricultura o matorral espinoso.
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46

Keita, Moussa Aliou, Renzong Ruan y Ru An. "Spatiotemporal Change of Urban Sprawl Patterns in Bamako District in Mali Based on Time Series Analysis". Urban Science 5, n.º 1 (29 de diciembre de 2020): 4. http://dx.doi.org/10.3390/urbansci5010004.

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For decades, urban sprawl has remained a major challenge for big cities in developing countries, such as Bamako. The aim of this study is to analyze urban sprawl pattern changes over time in the Bamako district using landscape index analyses. Four thematic maps of land cover (LC) were produced by applying the maximum likelihood supervised classification method on Landsat images for 1990, 2000, 2010, and 2018. Five landscape indexes were selected and calculated at class level and landscape level using FRAGSTATS software. The results showed that the dominant class for all the years within the landscape was a built-up class. Forest class covered the smallest area in terms of the percentage of land (%PLAND), and was the weakest class in terms of number of patches (NP) and largest patch index (LPI). Grassland is defined as the class with the highest fragmentation, farmland with the highest shape irregularity and more heterogeneity, and built-up with the highest patches. Class area (CA) of built-up showed the importance of sprawl in Communes 6, 5, and 4, respectively. Indices trends and land use/cover showed infill, scattered, and ribbon developments of sprawl. This study contributes toward monitoring long-term urban sprawl patterns using index analyses.
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47

Zhu, Wang y Sakai. "Remote Sensing-Based Analysis of Landscape Pattern Evolution in Industrial Rural Areas: A Case of Southern Jiangsu, China". Sustainability 11, n.º 18 (12 de septiembre de 2019): 4994. http://dx.doi.org/10.3390/su11184994.

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With the rapid economic development of industrial rural areas in Southern Jiangsu, the rural landscape and ecological environment of these industrial rural areas are getting damaged. Based on GIS and RS techniques, Landsat Satellite remote sensing images from 1981, 1991, 2001, 2011 and 2018 were collected for Jiangyin, Zhangjiagang, Changshu and Kunshan, to extract landscape pattern indexes and spatial distribution data. Landscape pattern indexes of the patch-class level and landscape level from each year were calculated by FRAGSTATS. After analyzing and comparing landscape pattern variation of five years, progress, characteristics and driving forces of landscape pattern evolution were explored. At the patch-class level, construction land had continuously encroached on green and cultivated land, exhibiting trends of expansion and centralization. At the landscape level, the number of small patches and degree of landscape fragmentation generally increased. The direct cause of landscape pattern evolution in industrial rural areas of Southern Jiangsu was the encroachment and segmentation of green and cultivated land by construction land, and the dominant factors driving the changes in construction land in the industrial rural areas of Southern Jiangsu were the effects of land and population aggregation exerted by the development of township enterprises and rural industries.
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48

Scussel, Cristiane, Jairo José Zocche, Nilzo Ivo Ladwig y Danrlei De Conto. "Fragmentação florestal em áreade Mata Atlântica no Sul do Brasil: uma análise baseada em métricas da paisagem". Geografia Ensino & Pesquisa 24 (31 de diciembre de 2020): e45. http://dx.doi.org/10.5902/2236499443836.

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Este estudo analisou a estrutura da paisagem de duas microbacias hidrográficas contíguas, localizadas na região sul do estado de Santa Catarina, Brasil, no intuito de avaliar o cenário atual da fragmentação estrutural florestal. Foi utilizada imagem fotogramétrica ortorretificada, escala de 1:10000, datada de 2011 para a interpretação das classes de cobertura e uso da terra e produção de mapas temáticos com auxílio do software ArcGis versão 10.3.1. Os arquivos vetoriais dos mapas temáticos produzidos foram importados no software Fragstats versão 4.2, que gerou o relatório das métricas da paisagem. Foram identificadas seis classes de cobertura e uso da terra que juntas somam 649 fragmentos distribuídos em 4453,9 ha. Os fragmentos florestais ocuparam 45% da área total mapeada e cerca de 90% deles tinham área menor do que 6,45 ha. O índice de forma média dos fragmentos florestais foi de 2,2ha, o que evidencia bordas altamente recortadas. A distribuição espacial destes fragmentos indica alto grau de conectividade estrutural. Embora grande parte da área das duas microbacias esteja ocupada por formações florestais e a conectividade estrutural seja elevada, a perda de habitat resultante das ações antrópicas foi maior do que 50%, o que sugere que tanto os fragmentos maiores quanto os menores em conjunto devem ser motivo de conservação.
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49

Bi, Yu, Jianwu Ma y Shuangqi Li. "Landscape Patterns of Wetland Parks in Suzhou based on ArcGIS and Fragstats: a Case Study of Huqiu Wetland Park and Taihu Hubin National Wetland Park". IOP Conference Series: Earth and Environmental Science 668, n.º 1 (1 de febrero de 2021): 012004. http://dx.doi.org/10.1088/1755-1315/668/1/012004.

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50

Zhao, Qingjian, Zuomin Wen, Shulin Chen, Sheng Ding y Minxin Zhang. "Quantifying Land Use/Land Cover and Landscape Pattern Changes and Impacts on Ecosystem Services". International Journal of Environmental Research and Public Health 17, n.º 1 (23 de diciembre de 2019): 126. http://dx.doi.org/10.3390/ijerph17010126.

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Based on satellite remote sensing image, GIS and Fragstats, this study modeled and calculated the dynamic changes of land use, land cover and landscape patterns in Guizhou Province, China, and calculated the changes of ecosystem service values (ESVs). The impacts of the evolution of landscape patterns on the ESVs were analyzed, and reasonable policy recommendations were made. The findings are as follows: (1) In the past two decades, the area of cropland and grassland has decreased; the area of water bodies, urban and rural, industrial and mining, and residential areas has increased; the area of forestland has increased first and then decreased. (2) The two major types of landscapes, cropland and grassland, are clearly being replaced by two land types, forest land and water bodies. (3) Overall, the degree of landscape aggregation and adjacency has decreased, and the landscape heterogeneity has increased. (4) The total amount of ESV in 2000, 2008, 2013 and 2017 was 2574 × 108 Yuan RMB, 2605 × 108 Yuan RMB, 2618 × 108 Yuan RMB and 2612 × 108 Yuan RMB, respectively. The changes of landscape patterns had important impacts on the ESVs. In order to solve the problems caused by the increasingly prominent changes in the landscape patterns and improve the ESVs, it is necessary to rationally plan and allocate land resources, optimize the industrial structures, and develop effective regulatory policies.
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