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Journal articles on the topic 'Forest tree cover'

Author: Grafiati

Published: 7 September 2021

Last updated: 10 February 2022

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1

Soleiman Mohammadi, Limaei, Lohmander Peter, and Olsson Leif. "Dynamic growth models for continuous cover multi-species forestry in Iranian Caspian forests." Journal of Forest Science 63, No. 11 (2017): 519–29. http://dx.doi.org/10.17221/32/2017-jfs.

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This study concerns some of the relevant topics of the Iranian Caspian forestry planning problem, in particular the first central components in this modelling process, such as forest modelling, forest statistics and growth function estimations. The required data was collected from Iranian Caspian forests. To do so, 201 sample plots were determined and the parameters such as number of trees, tree diameter at breast height and tree height were measured at each sample plot. Three sample plots at different 3 elevations were chosen to measure the tree increment. Data has been used to estimate a mod

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Vergara Paternina, Jose Alejandro, Jesús Ballesteros Correa, Carlos González Charrasquiel, and Juan C. Linares Arias. "Diversidad de aves en fragmentos de bosque seco tropical en paisajes ganaderos del Departamento de Córdoba, Colombia." Revista de Biología Tropical 65, no. 4 (2017): 1625. http://dx.doi.org/10.15517/rbt.v65i4.26313.

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In Colombia the tropical dry forest is one of the most threatened and least known ecosystems; these have been impacted by different transformation processes and habitat fragmentation, which have affected bird conditions and survival. This research evaluated the influence of landscape elements (forest and pastures with different tree covers) on bird diversity in the tropical dry forest of Córdoba, Colombia. The study was developed within an extensive livestock landscape to characterize the avifauna in four habitat types formed by fragments of secondary forests with different tree cover: seconda

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Cunningham, Daniel, Paul Cunningham, and Matthew E. Fagan. "Evaluating Forest Cover and Fragmentation in Costa Rica with a Corrected Global Tree Cover Map." Remote Sensing 12, no. 19 (2020): 3226. http://dx.doi.org/10.3390/rs12193226.

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Global tree cover products face challenges in accurately predicting tree cover across biophysical gradients, such as precipitation or agricultural cover. To generate a natural forest cover map for Costa Rica, biases in tree cover estimation in the most widely used tree cover product (the Global Forest Change product (GFC) were quantified and corrected, and the impact of map biases on estimates of forest cover and fragmentation was examined. First, a forest reference dataset was developed to examine how the difference between reference and GFC-predicted tree cover estimates varied along gradien

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Chojnacky, David, Emily Smith-McKenna, Laura Johnson, John McGee, and Cindy Chojnacky. "Evaluating Urban Canopy Cover Before and After Housing Redevelopment in Falls Church, Virginia, USA." Arboriculture & Urban Forestry 46, no. 1 (2020): 12–26. http://dx.doi.org/10.48044/jauf.2020.002.

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Local governments have created regulations aimed to maintain and increase valuable urban tree cover. The City of Falls Church, Virginia, USA, requires each residential redevelopment to retain or plant enough trees for 20% canopy cover within ten years. To assess whether this goal is being met, we studied 21 Falls Church residential lots redeveloped between 1994 and 2011 where existing houses had been replaced with larger ones. Initial tree inventories and measurements prior to redevelopment were recorded in redevelopment plans. We remeasured preserved and planted trees in a ground survey and m

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Ginzler, Christian, Lukas Mathys, and Esther Thürig. "Die Baumbedeckung in der Schweiz." Schweizerische Zeitschrift fur Forstwesen 162, no. 9 (2011): 344–49. http://dx.doi.org/10.3188/szf.2011.0344.

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Tree cover in Switzerland The requirements for national forest inventories have changed in recent decades, as have the issues involved. Initially, the focus was mainly information on timber resources, but today social and environmental functions are also of interest. An a priori separation of the surveyed areas into forest and non-forest during data collection limits the interpretation of the tree resources. Not all trees are located in the forest and not all forests are fully stocked. In the aerial photo interpretation of the 3rd National Forest Inventory, land cover on a regular sampling gri

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KUMAR, RAMAN, and GHAZALA SHAHABUDDIN. "Effects of biomass extraction on vegetation structure, diversity and composition of forests in Sariska Tiger Reserve, India." Environmental Conservation 32, no. 3 (2005): 248–59. http://dx.doi.org/10.1017/s0376892905002316.

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Despite the fact that tropical dry forests are being exploited on a large scale for various forest products, there has been limited evaluation of the accompanying ecological impacts. In particular, there is no information on the effects of widespread biomass extraction such as grazing and firewood collection. A study was carried out in Sariska Tiger Reserve in northern India, to investigate the effects of biomass extraction on forest vegetation composition, diversity and structure. Biomass extraction caused significant changes in forest vegetation structure and species composition in the tree

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Gupta, Parul, and Kiranmay Sarma. "Variations in Groundwater Quality under Different Vegetation Types in Delhi, India." INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT 2, no. 1 and 2 (2016): 69–72. http://dx.doi.org/10.18811/ijpen.v2i1-2.6619.

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Present work was undertaken to study the groundwater quality and depth under different vegetated land covers in Delhi viz. protected forest area, trees outside forest and maintained park. Phytosociology, groundwater quality and depth for each land cover were studied. Protected forest area has the best groundwater quality as per BIS drinking water standards. Trees outside forest area reported the worst water quality among all the land covers with Water Quality Index (WQI) value of 297. Groundwater under maintained parks was also found in the category of 'very poor' quality according to WQI valu

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Shrestha, Sujata, Uttam B. Shrestha, and Kamal Bawa. "Socio-economic factors and management regimes as drivers of tree cover change in Nepal." PeerJ 6 (May 29, 2018): e4855. http://dx.doi.org/10.7717/peerj.4855.

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Despite the local and global importance of forests, deforestation is driven by various socio-economic and biophysical factors continues in many countries. In Nepal, in response to massive deforestation, the community forestry program has been implemented to reduce deforestation and support livelihoods. After four decades of its inception, the effectiveness of this program on forest cover change remains mostly unknown. This study analyses the spatial and temporal patterns of tree cover change along with a few socio-economic drivers of tree cover change to examine the effectiveness of the commun

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Gao, Yan, Margaret Skutsch, Diana Laura Jiménez Rodríguez, and Jonathan V. Solórzano. "Identifying Variables to Discriminate between Conserved and Degraded Forest and to Quantify the Differences in Biomass." Forests 11, no. 9 (2020): 1020. http://dx.doi.org/10.3390/f11091020.

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The purpose of this work was to determine which structural variables present statistically significant differences between degraded and conserved tropical dry forest through a statistical study of forest survey data. The forest survey was carried out in a tropical dry forest in the watershed of the River Ayuquila, Jalisco state, Mexico between May and June of 2019, when data were collected in 36 plots of 500 m2. The sample was designed to include tropical dry forests in two conditions: degraded and conserved. In each plot, data collected included diameter at breast height, tree height, number

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Albuquerque, Rafael Walter, Manuel Eduardo Ferreira, Søren Ingvor Olsen, et al. "Forest Restoration Monitoring Protocol with a Low-Cost Remotely Piloted Aircraft: Lessons Learned from a Case Study in the Brazilian Atlantic Forest." Remote Sensing 13, no. 12 (2021): 2401. http://dx.doi.org/10.3390/rs13122401.

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Traditional forest restoration (FR) monitoring methods employ spreadsheets and photos taken at the ground level. Since remotely piloted aircraft (RPA) generate a panoramic high resolution and georeferenced view of the entire area of interest, this technology has high potential to improve the traditional FR monitoring methods. This study evaluates how low-cost RPA data may contribute to FR monitoring of the Brazilian Atlantic Forest by the automatic remote measurement of Tree Density, Tree Height, Vegetation Cover (area covered by trees), and Grass Infestation. The point cloud data was processe

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Oeba, Vincent Onguso, Samuel C. J. Otor, James B. Kung’u, and M. N. Muchiri. "Modelling Determinants of Tree Planting and Retention on Farm for Improvement of Forest Cover in Central Kenya." ISRN Forestry 2012 (December 31, 2012): 1–14. http://dx.doi.org/10.5402/2012/867249.

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Farm forestry has proved to be an important enterprise for small- and large-scale farmers worldwide. It has the potential of improving forest/tree cover across the globe. In Kenya, the forest cover is less than 2%. The country envisions achieving 10% forest cover over the next decade through promotion of farm forestry. However, the decision to plant trees on farmers’ land could be difficult. The study aimed to analyze the determinants of tree retention on farm for improvement of forest cover. Stratified and simple random sampling techniques were used in selecting 209 farmers. The results showe

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Mpanda, Mathew, Almas Kashindye, Ermias Aynekulu, Elvis Jonas, Todd S. Rosenstock, and Richard A. Giliba. "Forests, Farms, and Fallows: The Dynamics of Tree Cover Transition in the Southern Part of the Uluguru Mountains, Tanzania." Land 10, no. 6 (2021): 571. http://dx.doi.org/10.3390/land10060571.

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Forests and woodlands remain under threat in tropical Africa due to excessive exploitation and inadequate management interventions, and the isolated success stories of tree retention and tree cover transition on African agricultural land are less well documented. In this study, we characterize the status of tree cover in a landscape that contains forest patches, fallows, and farms in the southern part of Uluguru Mountains. We aimed to unveil the practices of traditional tree fallow system which is socially acceptable in local settings and how it provides a buffering effects to minimize forest

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Tiwari, A. K., and J. S. Singh. "Analysis of Forest Land-use and Vegetation in a Part of Central Himalaya, Using Aerial Photographs." Environmental Conservation 14, no. 3 (1987): 233–44. http://dx.doi.org/10.1017/s0376892900016441.

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The forest canopy, biomass, and basal tree-trunk cover, of an area of about 200,000 ha, comprising 10 subcatchments in the Indian Central Himalaya, were mapped by employing aerial photographs and non-destructive field sampling. This method provides basic information on the current forest land-use and biomass for enlightened environmental planning and conservation. Regression equations developed to describe predictive relationships between crown-cover and basal tree-trunk cover; biomass and crown-cover; basal tree-trunk cover and bole biomass; and basal tree-trunk cover and total above-ground b

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Dobrowolska, Dorota. "Forest regeneration in northeastern Poland following a catastrophic blowdown." Canadian Journal of Forest Research 45, no. 9 (2015): 1172–82. http://dx.doi.org/10.1139/cjfr-2014-0507.

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The aims of the investigation were to (i) quantify the changes in natural regeneration and stand structure, (ii) determine the role of deadwood in the process of regeneration following the disturbance, and (iii) determine the effect of disturbance severity on tree recruitment. The study was conducted in the Szast Protected Forest, which was established after a blowdown in 2002. The results showed that the trees were mainly wind-snapped. The basal area of the slightly disturbed stands increased over time. Herb cover increased, whereas moss cover decreased in 2011. The disturbance severity influ

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Halpern, Charles B., Martin Dovčiak, Lauren S. Urgenson, and Shelley A. Evans. "Substrates mediate responses of forest bryophytes to a gradient in overstory retention." Canadian Journal of Forest Research 44, no. 8 (2014): 855–66. http://dx.doi.org/10.1139/cjfr-2014-0059.

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Forest bryophytes are sensitive to the disturbances and environmental changes associated with forest management. We asked whether the substrates on which bryophytes grow mediate responses to exposure following canopy removal. We measured bryophyte cover and richness in 0.1 m2 quadrats on the forest floor, decayed logs, and tree bases along a gradient of dispersed overstory retention (100%, 40%, and 15% of initial basal area) 7 to 8 years after harvest of mature Pseudotsuga forests. Cover, local richness, and, to a lesser degree, species evenness declined steeply across the retention gradient o

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Oloo, Francis, Godwin Murithi, and Charlynne Jepkosgei. "Quantifying Tree Cover Loss in Urban Forests within Nairobi City Metropolitan Area from Earth Observation Data." Environmental Sciences Proceedings 3, no. 1 (2020): 78. http://dx.doi.org/10.3390/iecf2020-07952.

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Urban forests contribute significantly to the ecological integrity of urban areas and the quality of life of urban dwellers through air quality control, energy conservation, improving urban hydrology, and regulation of land surface temperatures (LST). However, urban forests are under threat due to human activities, natural calamities, and bioinvasion continually decimating forest cover. Few studies have used fine-scaled Earth observation data to understand the dynamics of tree cover loss in urban forests and the sustainability of such forests in the face of increasing urban population. The aim

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Wilson, Nicholas, Geoffrey J. Cary, and Philip Gibbons. "Relationships between mature trees and fire fuel hazard in Australian forest." International Journal of Wildland Fire 27, no. 5 (2018): 353. http://dx.doi.org/10.1071/wf17112.

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Increasing density of mid-storey vegetation since European settlement has been observed in forests and woodlands in several parts of the world and may result in greater fire fuel hazard. This phenomenon is often attributed to a longer interval between fires since European settlement, but may also be influenced by tree removal during the same period. We hypothesised that the number of mature trees in a stand reduces mid-storey vegetation cover and the associated fire fuel hazard through competition. To test this hypothesis, we examined associations between mid-storey cover and fire fuel hazard

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Kreyling, Juergen, Andreas Schmiedinger, Ellen Macdonald, and Carl Beiekuhnlein. "Potentials of Natural Tree Regeneration after Clearcutting in Subalpine Forests." Western Journal of Applied Forestry 23, no. 1 (2008): 46–52. http://dx.doi.org/10.1093/wjaf/23.1.46.

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Abstract Regeneration of interior mountain forests still is not adequately understood, although these forests are subject to intensified use over the last decades. We examined factors influencing the success of natural tree regeneration after harvesting in the Engelmann spruce–subalpine fir zone of the Monashee Mountains, British Columbia, Canada. Distance from the forest edge was an important factor for regeneration; at distances exceeding 70 m from the forest edge only 50% of plots showed sufficient natural regeneration to meet stocking targets compared with 90% of plots closer to forest edg

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Fornoff, Felix, Michael Staab, Chao-Dong Zhu, and Alexandra-Maria Klein. "Multi-trophic communities re-establish with canopy cover and microclimate in a subtropical forest biodiversity experiment." Oecologia 196, no. 1 (2021): 289–301. http://dx.doi.org/10.1007/s00442-021-04921-y.

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AbstractPlant diversity affects multi-trophic communities, but in young regrowth forests, where forest insects are in the process of re-establishment, other biotic and also abiotic factors might be more important. We studied cavity-nesting bees, wasps and their natural enemies along an experimental tree diversity gradient in subtropical South-East China. We compared insect communities of experimental young forests with communities of established natural forests nearby the experiment and tested for direct and indirect effects of tree diversity, tree basal area (a proxy of tree biomass), canopy

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Gao, Qiong, and Mei Yu. "Canopy Density and Roughness Differentiate Resistance of a Tropical Dry Forest to Major Hurricane Damage." Remote Sensing 13, no. 12 (2021): 2262. http://dx.doi.org/10.3390/rs13122262.

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Tropical dry forest is vulnerable to increased climate variability with more frequent and severe storms. Studies of hurricane impact on tropical dry forest often focused on individual tree traits. How trees in tropical dry forests work together to combat wind damage is still unclear. To address this, we integrated ground-observed ecosystem structure from National Ecological Observation Network (NEON) with airborne-LiDAR images and analyzed resistance in forest structure of Guánica dry forest in Puerto Rico to major hurricanes in 2017 at the forest-stand level. Using each plot instead of the in

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Wulder, Michael A., Txomin Hermosilla, Graham Stinson, et al. "Satellite-based time series land cover and change information to map forest area consistent with national and international reporting requirements." Forestry: An International Journal of Forest Research 93, no. 3 (2020): 331–43. http://dx.doi.org/10.1093/forestry/cpaa006.

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Abstract Forests are dynamic ecosystems, subject to both natural and anthropogenic agents of change. Wildfire, harvesting and other human activities alter the tree-covered area present in forests. From national and international reporting perspectives, forests include areas currently treed, as well as those disturbed forest areas that are not currently treed but will be, given time for regeneration and the advancement of natural successional processes. As a consequence, forest area can be depicted at a particular point in time, informed by a retrospective temporal context. Using time series of

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Hewson, Jennifer, Stefano Crema, Mariano González-Roglich, Karyn Tabor, and Celia Harvey. "New 1 km Resolution Datasets of Global and Regional Risks of Tree Cover Loss." Land 8, no. 1 (2019): 14. http://dx.doi.org/10.3390/land8010014.

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Despite global recognition of the social, economic and ecological impacts of deforestation, the world is losing forests at an alarming rate. Global and regional efforts by policymakers and donors to reduce deforestation need science-driven information on where forest loss is happening, and where it may happen in the future. We used spatially-explicit globally-consistent variables and global historical tree cover and loss to analyze how global- and regional-scale variables contributed to historical tree cover loss and to model future risks of tree cover loss, based on a business-as-usual scenar

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Kirkpatrick, J. B., and H. J. A. McKenny. "The Role of Fallen Logs in the Regeneration of Tree Species in Tasmanian Mixed Forest." Australian Journal of Botany 47, no. 5 (1999): 745. http://dx.doi.org/10.1071/bt98001.

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This study was designed to determine whether fallen logs were a more favourable habitat for tree species establishment than soil in moist eucalypt forest in Tasmania, whether establishment success on logs varied between two forests in contrasting environments, and whether surface and substrate qualities and light conditions were associated with establishment success. Data on tree and shrub species densities and heights by species, moss cover, litter cover, Blechnum wattsii cover, canopy cover, bulk density of the substrate, and substrate surface pH, nitrogen content and phosphorus content were

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Jia, Tao, Yuqian Li, Wenzhong Shi, and Ling Zhu. "Deriving a Forest Cover Map in Kyrgyzstan Using a Hybrid Fusion Strategy." Remote Sensing 11, no. 19 (2019): 2325. http://dx.doi.org/10.3390/rs11192325.

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Forests have potential economic value and play a significant role in maintaining ecological balance. Considering its outdated and incomplete forest statistics, the Kyrgyzstan Republic urgently needs a forest cover map for assessing its current forest resources and assisting national policies on improving rural livelihood and sustainability. This study adopted a hybrid fusion strategy to develop a forest cover map for the Kyrgyzstan Republic with improved accuracy. The fusion strategy uses the merits of the GlobeLand30 in 2010 and the USGS TreeCover2010, the benefits of auxiliary geographic inf

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Lwin, Kay Khaing, Tetsuji Ota, Katsuto Shimizu, and Nobuya Mizoue. "Assessing the Importance of Tree Cover Threshold for Forest Cover Mapping Derived from Global Forest Cover in Myanmar." Forests 10, no. 12 (2019): 1062. http://dx.doi.org/10.3390/f10121062.

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Comprehensive forest cover mapping is essential for making policy and management decisions. However, creating a forest cover map from raw remote sensing data is a barrier for many users. Here, we investigated the effects of different tree cover thresholds on the accuracy of forest cover maps derived from the Global Forest Change Dataset (GFCD) across different ecological zones in a country-scale evaluation of Myanmar. To understand the effect of different thresholds on map accuracy, nine forest cover maps having thresholds ranging from 10% to 90% were created from the GFCD. The accuracy of the

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Abele, Suzanne E., S. Ellen Macdonald, and John R. Spence. "Cover type, environmental characteristics, and conservation of terrestrial gastropod diversity in boreal mixedwood forests." Canadian Journal of Forest Research 44, no. 1 (2014): 36–44. http://dx.doi.org/10.1139/cjfr-2013-0210.

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Terrestrial gastropods are important decomposers, herbivores, and prey items in forest systems and constitute a poorly understood element of forest biodiversity in Canada. We sampled terrestrial gastropod assemblages in northwestern Alberta, Canada, using board traps and forest floor sampling to examine their association with forest composition, structure, and environment (forest floor depth and moisture, coarse woody debris, understory vegetation cover) in four boreal mixedwood cover types: broadleaf (deciduous) dominated (DDOM), broadleaf (deciduous) dominated with coniferous understory (DDO

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Kull, Christian A. "Forest transitions: a new conceptual scheme." Geographica Helvetica 72, no. 4 (2017): 465–74. http://dx.doi.org/10.5194/gh-72-465-2017.

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Abstract. Forest transitions have recently received much attention, particularly in the hope that the historical transitions from net deforestation to forest recovery documented in several temperate countries might be reproduced in tropical countries. The analysis of forest transitions, however, has struggled with questions of forest definition and has at times focussed purely on tree cover, irrespective of tree types (e.g. native forest or exotic plantations). Furthermore, it has paid little attention to how categories and definitions of forest are used to political effect or shape how forest

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Gyamfi-Ampadu, Enoch, and Michael Gebreslasie. "Two Decades Progress on the Application of Remote Sensing for Monitoring Tropical and Sub-Tropical Natural Forests: A Review." Forests 12, no. 6 (2021): 739. http://dx.doi.org/10.3390/f12060739.

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Forest covers about a third of terrestrial land surface, with tropical and subtropical zones being a major part. Remote sensing applications constitute a significant approach to monitoring forests. Thus, this paper reviews the progress made by remote sensing data applications to tropical and sub-tropical natural forest monitoring over the last two decades (2000–2020). The review focuses on the thematic areas of aboveground biomass and carbon estimations, tree species identification, tree species diversity, and forest cover and change mapping. A systematic search of articles was performed on We

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Merganič, Ján, Katarína Merganičová, Bohdan Konôpka, and Miloš Kučera. "Country and regional carbon stock in forest cover – estimates based on the first cycle of the Czech National Forest Inventory data (2001–2004)." Central European Forestry Journal 63, no. 2-3 (2017): 113–25. http://dx.doi.org/10.1515/forj-2017-0018.

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AbstractSince forests can play an efficient role in the mitigation of greenhouse gas emissions, objective information about the actual carbon stock is very important. Therefore, the presented paper analysed the carbon stock in the living merchantable trees (with diameter at breast height above 7 cm) of the Czech forests with regard to groups of tree species and tree compartments (wood under bark with diameter above 7 cm, wood under bark with diameter below 7 cm, bark, green twigs, foliage, stump and roots). We examined its regional distribution and relationship to the number of inhabitants and

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Dyderski, Marcin K., and Andrzej M. Jagodziński. "Impacts of alien tree species on the abundance and diversity of terricolous bryophytes." Folia Geobotanica 55, no. 4 (2020): 351–63. http://dx.doi.org/10.1007/s12224-020-09384-2.

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AbstractBryophytes comprise an important element of temperate forest biodiversity and functioning. Although numerous studies reported impacts of alien tree species on understorey vegetation, few focused on impacts on bryophytes. Here we checked whether three invasive tree species in Europe (Prunus serotina Ehrh., Quercus rubra L. and Robinia pseudoacacia L.) influence terricolous bryophyte communities, alpha and beta diversity, and cover. We used a set of 186 study plots in western Poland with data on the cover of bryophytes species, as well as light availability, soil C:N ratio and pH. We fou

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Gao, Y., D. Jiménez, M. Skutsch, M. Salinas, and J. Solórzano. "WHICH VARIABLES IN FOREST SURVEY DATA CAN BETTER DISTINGUISH CONSERVED AND DEGRADED TROPICAL DRY FOREST?" ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W12-2020 (November 6, 2020): 309–13. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w12-2020-309-2020.

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Abstract. This paper presents the results of a statistical study of forest inventory data for tropical dry forest in Ayuquila River Basin, Jalisco state, Mexico. The field inventory was carried out between May-June of 2019 which is at the end of dry season and the beginning of raining season. The field inventory data were collected in 43 plots of 500 m2 each which were designed in a way to include tropical dry forests in two conditions: degraded and conserved. In each plot, the collected data include DBH, tree height, number of trees per plot, and the density of tree stems. A study was carried

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Rodrigues-Eklund, Gabriela, Matthew C. Hansen, Alexandra Tyukavina, Stephen V. Stehman, Klaus Hubacek, and Giovanni Baiocchi. "Sample-Based Estimation of Tree Cover Change in Haiti Using Aerial Photography: Substantial Increase in Tree Cover between 2002 and 2010." Forests 12, no. 9 (2021): 1243. http://dx.doi.org/10.3390/f12091243.

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Recent studies have used high resolution imagery to estimate tree cover and changes in natural forest cover in Haiti. However, there is still no rigorous quantification of tree cover change accounting for planted or managed trees, which are very important in Haiti’s farming systems. We estimated net tree cover change, gross loss, and gross gain in Haiti between 2002 and 2010 from a stratified random sample of 400 pixels with a systematic sub-sample of 25 points. Using 30 cm and 1 m resolution images, we classified land cover at each point, with any point touching a woody plant higher than 5 m

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Wade, Christopher M., Kemen G. Austin, James Cajka, et al. "What Is Threatening Forests in Protected Areas? A Global Assessment of Deforestation in Protected Areas, 2001–2018." Forests 11, no. 5 (2020): 539. http://dx.doi.org/10.3390/f11050539.

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The protection of forests is crucial to providing important ecosystem services, such as supplying clean air and water, safeguarding critical habitats for biodiversity, and reducing global greenhouse gas emissions. Despite this importance, global forest loss has steadily increased in recent decades. Protected Areas (PAs) currently account for almost 15% of Earth’s terrestrial surface and protect 5% of global tree cover and were developed as a principal approach to limit the impact of anthropogenic activities on natural, intact ecosystems and habitats. We assess global trends in forest loss insi

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Senf, Cornelius, Jörg Müller, and Rupert Seidl. "Post-disturbance recovery of forest cover and tree height differ with management in Central Europe." Landscape Ecology 34, no. 12 (2019): 2837–50. http://dx.doi.org/10.1007/s10980-019-00921-9.

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Abstract Context Recovery from disturbances is a prominent measure of forest ecosystem resilience, with swift recovery indicating resilient systems. The forest ecosystems of Central Europe have recently been affected by unprecedented levels of natural disturbance, yet our understanding of their ability to recover from disturbances is still limited. Objectives We here integrated satellite and airborne Lidar data to (i) quantify multi-decadal post-disturbance recovery of two indicators of forest structure, and (ii) compare the recovery trajectories of forest structure among managed and un-manage

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Gibbs, Lisa, Nick Reid, and R. D. B. Whalley. "Relationships between Tree Cover and Grass Dominance in a Grazed Temperate Stringybark (Eucalyptus laevopinea) Open-Forest." Australian Journal of Botany 47, no. 1 (1999): 49. http://dx.doi.org/10.1071/bt97011.

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Dominance of herbaceous species was examined in relation to tree cover in lightly grazed stringybark Eucalyptus laevopinea open-forest recovering from ringbarking and logging on the Northern Tablelands of New South Wales (NSW). The dominant herb was recorded in 121 quadrats (0.25 m2) in 24 plots (10 × 10) stratified by tree cover (beneath trees, away from trees, and amongst small sapling stands). Aristida ramosa dominated the grassy understorey in interspaces, whereas Microlaena stipoides was the most frequent dominant beneath and near tree cover. Poa sieberiana was also more abundant beneath

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Ahrends, Antje, Peter M. Hollingsworth, Philip Beckschäfer, et al. "China's fight to halt tree cover loss." Proceedings of the Royal Society B: Biological Sciences 284, no. 1854 (2017): 20162559. http://dx.doi.org/10.1098/rspb.2016.2559.

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China is investing immense resources for planting trees, totalling more than US$ 100 billion in the past decade alone. Every year, China reports more afforestation than the rest of the world combined. Here, we show that China's forest cover gains are highly definition-dependent. If the definition of ‘forest’ follows FAO criteria (including immature and temporarily unstocked areas), China has gained 434 000 km 2 between 2000 and 2010. However, remotely detectable gains of vegetation that non-specialists would view as forest (tree cover higher than 5 m and minimum 50% crown cover) are an order o

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Bowman, DMJS. "Monsoon Forests in North-Western Australia. II. Forest-Savanna Transitions." Australian Journal of Botany 40, no. 1 (1992): 89. http://dx.doi.org/10.1071/bt9920089.

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Presence-absence data for tree species in over 1000 quadrats, 10 ° 20m, on 144 transects were analysed by the divisive classificatory program TWINSPAN in order to define wet or dry monsoon forest, ecotone and savanna assemblages. A sorted table revealed that there was continuous floristic variation among these six vegetation types, although the abundance of tree species varied highly significantly between assemblages. Both wet and dry monsoon forests have higher stem densities, greater basal area, more tree species, higher litter cover and lower grass cover than surrounding savannas. Wet monso

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Xie, Zhuli, Yaoliang Chen, Dengsheng Lu, Guiying Li, and Erxue Chen. "Classification of Land Cover, Forest, and Tree Species Classes with ZiYuan-3 Multispectral and Stereo Data." Remote Sensing 11, no. 2 (2019): 164. http://dx.doi.org/10.3390/rs11020164.

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The global availability of high spatial resolution images makes mapping tree species distribution possible for better management of forest resources. Previous research mainly focused on mapping single tree species, but information about the spatial distribution of all kinds of trees, especially plantations, is often required. This research aims to identify suitable variables and algorithms for classifying land cover, forest, and tree species. Bi-temporal ZiYuan-3 multispectral and stereo images were used. Spectral responses and textures from multispectral imagery, canopy height features from b

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Zörner, Jan, John Dymond, James Shepherd, Susan Wiser, and Ben Jolly. "LiDAR-Based Regional Inventory of Tall Trees—Wellington, New Zealand." Forests 9, no. 11 (2018): 702. http://dx.doi.org/10.3390/f9110702.

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Indigenous forests cover 23.9% of New Zealand’s land area and provide highly valued ecosystem services, including climate regulation, habitat for native biota, regulation of soil erosion and recreation. Despite their importance, information on the number of tall trees and the tree height distribution across different forest classes is scarce. We present the first region-wide spatial inventory of tall trees (>30 m) based on airborne LiDAR (Light Detection and Ranging) measurements in New Zealand—covering the Greater Wellington region. This region has 159,000 ha of indigenous forest, primaril

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Sulaiman, Bustam, Azis Nur Bambang, and Mohammad Lutfi. "Mangrove Cultivation (Avicennia Marina) as an Effort for Mangrove Rehabilitation in the Ponds Bare in Belopa, Luwu Regency." E3S Web of Conferences 73 (2018): 04008. http://dx.doi.org/10.1051/e3sconf/20187304008.

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Mangrove forest suggest a high degradation rate due to its utilization pattern which is ignore conservation aspect. In order to manage of mangrove forests in a sustainable manner, it is required any knowledge about the economic values which is useful for local community. This study aims to rehabilitate mangrove forests in Belopa, Luwu regency that have been turned into ponds by planting Avicennia marina mangroves around the ponds to expand land cover in the empty ponds and its fruit can be utilized for processed foods. This research is the action research. Estimated area of mangrove cover that

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Cunningham, Daniel, Paul Cunningham, and Matthew E. Fagan. "Identifying Biases in Global Tree Cover Products: A Case Study in Costa Rica." Forests 10, no. 10 (2019): 853. http://dx.doi.org/10.3390/f10100853.

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Global tree cover products are widely used in analyses of deforestation, fragmentation, and connectivity, but are rarely critically assessed. Inaccuracies in these products could have consequences for future decision making, especially in data-poor regions like the tropics. In this study, potential biases in global and regional tree cover products were assessed across a diverse tropical country, Costa Rica. Two global tree cover products and one regional national forest cover map were evaluated along biophysical gradients in elevation, precipitation, and agricultural land cover. To quantify pr

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Hwang, Byongjun, Kitessa Hundera, Bizuneh Mekuria, Adrian Wood, and Andinet Asfaw. "Intensified Management of Coffee Forest in Southwest Ethiopia Detected by Landsat Imagery." Forests 11, no. 4 (2020): 422. http://dx.doi.org/10.3390/f11040422.

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The high forests in southwest Ethiopia, some of the last remaining Afromontane forests in the country, are home to significant forest coffee production. While considered as beneficial in maintaining forests, there have been growing concerns about the degradation caused by intensive management for coffee production in these forests. However, no suitable methods have been developed to map the coffee forests. In this study, we developed a tie-point approach to consistently estimate the degree of degradation caused by intensive management by combining use of Landsat imagery with in-situ canopy cov

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Lang, Mait, Mihkel Kaha, Diana Laarmann, and Allan Sims. "Construction of tree species composition map of Estonia using multispectral satellite images, soil map and a random forest algorithm." Forestry Studies 68, no. 1 (2018): 5–24. http://dx.doi.org/10.2478/fsmu-2018-0001.

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Abstract Landsat-8 OLI and Sentinel-2 MSI images from years 2015 and 2016, a 1:10,000 digital soil map and a large number of reference samples were used with a random forest machine learning implementation in GRASS GIS to construct a tree species map for the entire territory of Estonia (42,755 km2). Class probabilities for seven main tree species, an extra class for other species and probability of the forest cover not conforming to the forest definition were assigned for each pixel. Validation of dominant species distribution by area showed very strong correlation at county level both in stat

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Bennett, Guy, Andy Hardy, Pete Bunting, Philippe Morgan, and Andrew Fricker. "A Transferable and Effective Method for Monitoring Continuous Cover Forestry at the Individual Tree Level Using UAVs." Remote Sensing 12, no. 13 (2020): 2115. http://dx.doi.org/10.3390/rs12132115.

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Transformation to Continuous Cover Forestry (CCF) is a long and difficult process in which frequent management interventions rapidly alter forest structure and dynamics with long lasting impacts. Therefore, a critical component of transformation is the acquisition of up-to-date forest inventory data to direct future management decisions. Recently, the use of single tree detection methods derived from unmanned aerial vehicle (UAV) has been identified as being a cost effective method for inventorying forests. However, the rapidly changing structure of forest stands in transformation amplifies th

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Chaudhary, Lal Babu, Anoop Kumar, Ashish K. Mishra, et al. "Tree resources Of Katerniaghat Wildlife Sanctuary, Uttar Pradesh, India with especial emphasis on conservation status, phenology and economic values." International Journal of Environment 3, no. 1 (2014): 122–33. http://dx.doi.org/10.3126/ije.v3i1.9949.

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Uttar Pradesh, one of the most populated states of India along international border of Nepal, contributes only about 3% of total forest & tree cover of the country as the major parts of the area is covered by agriculture lands and human populations. The forests are quite fragmented and facing severe anthropogenic pressure in many parts. To protect the existing biodiversity, several forest covers have been declared as National Parks and Wildlife Sanctuaries. In the present study, Katerniaghat Wildlife Sanctuary (KWS) has been selected to assess tree diversity, their phenology and economic v

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Barlow, Jos, and Carlos A. Peres. "Fire-mediated dieback and compositional cascade in an Amazonian forest." Philosophical Transactions of the Royal Society B: Biological Sciences 363, no. 1498 (2008): 1787–94. http://dx.doi.org/10.1098/rstb.2007.0013.

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The only fully coupled land–atmosphere global climate model predicts a widespread dieback of Amazonian forest cover through reduced precipitation. Although these predictions are controversial, the structural and compositional resilience of Amazonian forests may also have been overestimated, as current vegetation models fail to consider the potential role of fire in the degradation of forest ecosystems. We examine forest structure and composition in the Arapiuns River basin in the central Brazilian Amazon, evaluating post-fire forest recovery and the consequences of recurrent fires for the patt

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Pujar, G. S., P. M. Reddy, C. S. Reddy, C. S. Jha, and V. K. Dadhwal. "Estimation of Trees Outside Forests using IRS High Resolution data by Object Based Image Analysis." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-8 (November 28, 2014): 623–29. http://dx.doi.org/10.5194/isprsarchives-xl-8-623-2014.

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Assessment of Trees outside forests (TOF) is widely being recognized as a pivotal theme, in sustainable natural resource management, due to their role in offering variety of goods, such as timber, fruits and fodder as well as services like water, carbon, biodiversity. Forest Conservation efforts involving reduction of deforestation and degradation may have to increasingly rely on alternatives provided by TOF in catering to economic demands in forest edges. Spatial information systems involving imaging, analysis and monitoring to achieve objectives under protocols like REDD+, require incorporat

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Camarero, Jesús Julio, Michele Colangelo, Antonio Gazol, Manuel Pizarro, Cristina Valeriano, and José M. Igual. "Effects of Windthrows on Forest Cover, Tree Growth and Soil Characteristics in Drought-Prone Pine Plantations." Forests 12, no. 7 (2021): 817. http://dx.doi.org/10.3390/f12070817.

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Windstorms are forest disturbances which generate canopy gaps. However, their effects on Mediterranean forests are understudied. To fill that research gap, changes in tree, cover, growth and soil features in Pinus halepensis and Pinus sylvestris plantations affected by windthrows were quantified. In each plantation, trees and soils in closed-canopy stands and gaps created by the windthrow were sampled. Changes in tree cover and radial growth were assessed by using the Normalized Difference Vegetation Index (NDVI) and dendrochronology, respectively. Soil features including texture, nutrients co

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Galiatsatos, Nikolaos, Daniel N. M. Donoghue, Pete Watt, et al. "An Assessment of Global Forest Change Datasets for National Forest Monitoring and Reporting." Remote Sensing 12, no. 11 (2020): 1790. http://dx.doi.org/10.3390/rs12111790.

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Global Forest Change datasets have the potential to assist countries with national forest measuring, reporting and verification (MRV) requirements. This paper assesses the accuracy of the Global Forest Change data against nationally derived forest change data by comparing the forest loss estimates from the global data with the equivalent data from Guyana for the period 2001–2017. To perform a meaningful comparison between these two datasets, the initial year 2000 forest state needs first to be matched to the definition of forest land cover appropriate to a local national setting. In Guyana, th

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Harper, Karen A., Ryan K. Danby, Danielle L. De Fields, et al. "Tree spatial pattern within the forest–tundra ecotone: a comparison of sites across CanadaThis article is a contribution to the series Tree recruitment, growth, and distribution at the circumpolar forest–tundra transition." Canadian Journal of Forest Research 41, no. 3 (2011): 479–89. http://dx.doi.org/10.1139/x10-221.

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Although many studies have focused on factors influencing treeline advance with climate change, less consideration has been given to potential changes in tree spatial pattern across the forest–tundra ecotone. We investigated trends in spatial pattern across the forest–tundra ecotone and geographical variation in the Yukon, Manitoba, and Labrador, Canada. Tree cover was measured in contiguous quadrats along transects up to 100 m long located in Forest, Ecotone, and Tundra sections across the forest–tundra transition. Spatial patterns were analyzed using new local variance to estimate patch size

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