کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5744025 1618000 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling the spatial dynamics of deforestation and fragmentation using Multi-Layer Perceptron neural network and landscape fragmentation tool
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Modeling the spatial dynamics of deforestation and fragmentation using Multi-Layer Perceptron neural network and landscape fragmentation tool
چکیده انگلیسی


- Study assesses and monitors deforestation and fragmentation in forest ecosystems of Assam.
- Multi-Layer Perceptron neural network modeling was used for predicting the spatial distribution of deforestation.
- Evaluated the rate of changes in forests.
- The results of fragmentation analysis have indicated the reduction of core forests.
- Identified the deforestation hotspots.

This study has assessed forest cover changes, rate of deforestation, levels of fragmentation and modeled the spatial dynamics of deforestation and forest fragmentation in Assam, India. The analysis of the forest change shows that between 1975 and 2015, the area coverage of forest has reduced from 23749 km2 (30.3% of the state geographical area) to 21145 km2 (27% of the state geographical area). The total predicted forest area of Assam is 20189 km2 (25.7%) for 2030. Forest and non-forest classes were evaluated in order to assess changes and to study influence of five physical factors-distance from road and settlement areas, elevation, slope and distance from the water bodies on the deforestation. The Multi-Layer Perceptron neural network modeling was used for predicting the spatial distribution of deforestation. According to the Cramer coefficients, the elevation was strongly associated with deforestation in Assam followed by the slope, distance to water bodies and the distance to roads. The forest areas undergoing high concentration of negative changes have been modelled in the form of deforestation hotspots by using optimised hotspot tool. The results of fragmentation analysis have indicated the reduction of core forests throughout the study period. The spatial database generated in the study is a useful input for understanding of the impact of deforestation and fragmentation on biodiversity and land use change.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecological Engineering - Volume 99, February 2017, Pages 543-551
نویسندگان
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