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Academic literature on the topic 'Fragstats'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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Journal articles on the topic "Fragstats"

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Kwon, Oh-Sung, Jung-Hwa Ra, Ji-Na Ku, and Jin-Hyo Kim. "Temporal-Spatial Analysis of Landscape Diversity using FRAGSTATS." Journal of the Korea Society of Environmental Restoration Technology 18, no. 3 (June 30, 2015): 39–50. http://dx.doi.org/10.13087/kosert.2015.18.3.39.

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Chen, Benxin, and Basil V. Iannone III. "FRAGSTATS: A Free Tool for Quantifying and Evaluating Spatial Patterns." EDIS 2020, no. 6 (November 5, 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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Calvo-Obando, Ana, and Edgar Ortiz-Malavasi. "Fragmentación de la cobertura forestal en Costa Rica durante los períodos 1997 – 2000 y 2000-2005." Revista Forestal Mesoamericana Kurú 9, no. 22 (September 6, 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, and Fabiana Estigarribia. "INFLUÊNCIA HIPSOMÉTRICA NA FRAGMENTAÇÃO EM REGIÕES SEMIÁRIDAS." Nativa 6 (December 17, 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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Raines, Gary L. "Description and comparison of geologic maps with FRAGSTATS—a spatial statistics program." Computers & Geosciences 28, no. 2 (March 2002): 169–77. http://dx.doi.org/10.1016/s0098-3004(01)00030-9.

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Choi, Jin-Young, Moon-Seong Kang, Seung-Jong Bae, Hak-Kwan Kim, and 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, no. 4 (July 31, 2010): 53–61. http://dx.doi.org/10.5389/ksae.2010.52.4.053.

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Li, Xin, Ling Lu, Guodong Cheng, and Honglang Xiao. "Quantifying landscape structure of the Heihe River Basin, north-west China using FRAGSTATS." Journal of Arid Environments 48, no. 4 (August 2001): 521–35. http://dx.doi.org/10.1006/jare.2000.0715.

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Zatelli, Paolo, Stefano Gobbi, Clara Tattoni, Maria Giulia Cantiani, Nicola La Porta, Duccio Rocchini, Nicola Zorzi, and 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, no. 12 (December 13, 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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Jing, Juan Li, and Yong Feng Wang. "Spatial and Temporal Changes of Landscape Pattern in Li River Basin." Advanced Materials Research 1065-1069 (December 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, and 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, no. 65 (December 17, 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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Dissertations / Theses on the topic "Fragstats"

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Ott, Theresia. "Landscape heterogeneity as a determinant of range utilization by African elephants (Loxodonta africana) in mesic savannas." Diss., Pretoria : [S.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-0522208-131027/.

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SIQUEIRA, Mariana Nascimento. "Avaliação geoecológica do processo de fragmentação dos remanescentes de cerrado na sub-bacia do rio das Garças (MT)." Universidade Federal de Goiás, 2012. http://repositorio.bc.ufg.br/tede/handle/tde/1879.

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Made available in DSpace on 2014-07-29T15:32:05Z (GMT). No. of bitstreams: 1 Dissertacao_Mariana_N_Siqueira - pre textuais.pdf: 156975 bytes, checksum: da84656e45621079b20dac575d82ffb1 (MD5) Previous issue date: 2012-02-28
Analisar os processos de fragmentação nos ecossistemas brasileiros através da abordagem geográfica da ecologia da paisagem demanda, prioritariamente, a utilização do sensoriamento remoto para geração dos dados espaciais de cobertura vegetal e de ocupação do solo, conhecidos como estrutura da paisagem. A sub-bacia hidrográfica do Rio das Garças, integrante da Alta Bacia do Rio Araguaia, em trabalhos anteriores, apresentou os menores índices de fragmentação e degradação em relação às demais subbacias. Por esse motivo, foi realizada análise detalhada da sua estrutura da paisagem através de imagens de satélite (LANDSAT-TM) e de índices descritores da paisagem, adotando uma comparação espacial em sucessão histórica dos anos de 1985, 1995, 2005 e 2010. Adotou-se o software FRAGSTATS, em função de sua complexidade e em consideração à diversidade e capacidade para desenvolver estimativas métricas dos polígonos que representavam os remanescentes do Cerrado e, portanto, auxiliar nas avaliações do estado de fragmentação da vegetação da área. Conclui-se que a sub-bacia estudada apresentou índice crescente de antropização no período, avançando sobre as áreas de vegetação natural, inclusive em áreas legalmente protegidas. Apesar disso, constatou-se que a formação savânica ainda é mais representativa do que as atividades antrópicas, porém, com o aumento da fragmentação muitos remanescentes tendem à homogeneidade e ficam sujeitos aos efeitos de borda. Para sua conservação é necessário reverter essa situação por meio do aumento da fiscalização ambiental, implantação de políticas públicas de conservação, preservação e uso sustentável, além de recuperação das áreas legalmente protegidas.

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Thapa, Vivek. "Analysis of the One-Horned Rhinoceros (Rhinoceros Unicornis) Habitat in the Royal Chitwan National Park, Nepal." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4926/.

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This study analyzes the remaining suitable habitat of the one-horned rhinoceros, Rhinoceros unicornis, in Royal Chitwan National Park of Nepal. An April 2003 Landsat image was classified into eight land cover types: wetland, sand, water, mixed forest, sal forest, agriculture, settlement, and grassland. This image was converted into habitat suitability maps using cover, food, and water. The rhinoceros prefers grassland habitat with oxbow lakes and closed canopy during the monsoon season. Nominal values of five parameters were used to create a map of habitat suitability index. The map was categorized into four habitat classes: highly unsuitable, unsuitable, moderately suitable habitat, and suitable. Landscape metrics, patch metrics and class metrics associated with habitat were determined through the use of FRAGSTATS.

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Carpenter, Lee Wyatt. "Valuing Natural Space and Landscape Fragmentation in Richmond, VA." VCU Scholars Compass, 2016. http://scholarscompass.vcu.edu/etd/4645.

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Hedonic pricing methods and GIS (Geographic Information Systems) were used to evaluate relationships between sale price of single family homes and landscape fragmentation and natural land cover. Spatial regression analyses found that sale prices increase as landscapes become less fragmented and the amount of natural land cover around a home increases. The projected growth in population and employment in the Richmond, Virginia region and subsequent increases in land development and landscape fragmentation presents a challenge to sustaining intact healthy ecosystems in the Richmond region. Spatial regression analyses helped illuminate how land cover patterns influence sale prices and landscape patterns that are economically and ecologically advantageous.

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Ryu, Wansang. "A Typology of Foredune Textures: Sand Patches and Climate Controls." Thesis, 2012. http://hdl.handle.net/1969.1/148313.

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Foredunes are formed and developed in association with vegetation. A bare sand area has been viewed as a measure of dune mobility or activity and researched in association with climate controls: particularly wind power, annual mean precipitation, and temperature, expressed in annual mean potential evapotranspiration. There has been no research that utilized the patterns of bare sand areas to classify foredune areas in coastal dune systems and investigated climate controls related to sand patch patterns, or “foredune textures” such as size, number, and distribution of sand patches Four foredune types were classified based on four landscape metrics (PLAND: percentage of bare sand area, PLADJ: proportion of like-adjacencies, NLSI: normalized landscape shape index, and ENN_RA: range of Euclidean nearest neighbor), by applying the concepts and methodologies of landscape ecology. Four climate variables (annual mean precipitation, annual mean potential evapotranspiration, Lancaster’s mobility index, and the standard deviation of annual mean precipitation) were found to affect the foredune types and help in distinguishing one foredune type from another. The amount of bare sand area on coastal foredune areas can be explained by annual mean precipitation (R^2 is 0.52 at the 99 % confidence level), standard deviation of precipitation (R^2 is 0.51 at the 99 % confidence level), and Lancaster’s mobility index (R^2 is 0.37 at the 99 % confidence level) but wind variables such as drift potential do not explain much (R^2 is 0.04 at maximum). This suggests that dune activity or stabilization in coastal dune systems is mainly controlled by vegetation cover, which is in turn affected by precipitation. Foredune textures can be a useful tool to predict foredune types in association with future climate change, and the optimal averaging period of precipitation for each bare sand area was seven years.

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"Effects of Urbanization on Bat Habitat Use in the Phoenix Metropolitan Region, Arizona, USA: A Multi-Scale Landscape Analysis." Master's thesis, 2016. http://hdl.handle.net/2286/R.I.41254.

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abstract: Context – Urbanization can have negative effects on bat habitat use through the loss and isolation of habitat even for volant bats. Yet, how bats respond to the changing landscape composition and configuration of urban environments remains poorly understood. Objective – This study examines the relationship between bat habitat use and landscape pattern across multiple scales in the Phoenix metropolitan region. My research explores how landscape composition and configuration affects bat activity, foraging activity, and species richness (response variables), and the distinct habitats that they use. Methods – I used a multi-scale landscape approach and acoustic monitoring data to create predictive models that identified the key predictor variables across multiple scales within the study area. I selected three scales with the intent of capturing the landscape, home range, and site scales, which may all be relevant for understanding bat habitat use. Results – Overall, class-level metrics and configuration metrics best explained bat habitat use for bat species associated with this urban setting. The extent and extensiveness of water (corresponding to small water bodies and watercourses) were the most important predictor variables across all response variables. Bat activity was predicted to be high in native vegetation remnants, and low in native vegetation at the city periphery. Foraging activity was predicted to be high in fine-scale land cover heterogeneity. Species richness was predicted to be high in golf courses, and low in commercial areas. Bat habitat use was affected by urban landscape pattern mainly at the landscape and site scale. Conclusions – My results suggested in hot arid urban landscapes water is a limiting factor for bats, even in urban landscapes where the availability of water may be greater than in outlying native desert habitat. Golf courses had the highest species richness, and included the detection of the uncommon pocketed free-tailed bat (Nyctinomops femorosaccus). Water cover types had the second highest species richness. Golf courses may serve as important stop-overs or refuges for rare or elusive bats. Urban waterways and golf courses are novel urban cover types that can serve as compliments to urban preserves, and other green spaces for bat conservation.
Dissertation/Thesis
Masters Thesis Biology 2016

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Books on the topic "Fragstats"

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Pacific Northwest Research Station (Portland, Or.), ed. FRAGSTATS, spatial pattern analysis program for quantifying landscape structure. 2nd ed. Portland, Or: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, 1995.

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Book chapters on the topic "Fragstats"

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Singh, Sudhir Kumar, Avinash Chandra Pandey, and Dharamveer Singh. "Land Use Fragmentation Analysis Using Remote Sensing and Fragstats." In Society of Earth Scientists Series, 151–76. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-05906-8_9.

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Conference papers on the topic "Fragstats"

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Song, Haihong, Lingxiao Liu, Yutong Zhang, and Siyu Pei. "Research on Landscape Pattern Optimization of Xianglan Town Based on GIS and Fragstats." In 2017 International Conference on Society Science (ICoSS 2017). Paris, France: Atlantis Press, 2017. http://dx.doi.org/10.2991/icoss-17.2017.39.

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Xing, Xueyun, Qian Zhou, and Yongjiu Feng. "Investigating Landscape Fragmentation in Suburban Area Using Remote Sensing and Fragstats: A Case Study of Shanghai." In 2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering (RSETE). IEEE, 2012. http://dx.doi.org/10.1109/rsete.2012.6260602.

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Reports on the topic "Fragstats"

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McGarigal, Kevin, and Barbara J. Marks. FRAGSTATS: spatial pattern analysis program for quantifying landscape structure. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, 1995. http://dx.doi.org/10.2737/pnw-gtr-351.

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