Long Term Monitoring of Forest Fires in Silent Valley National Park, Western Ghats, India Using Remote Sensing Data
Long Term Monitoring of Forest Fires in Silent Valley National Park, Western Ghats, India Using Remote Sensing Data
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DOI：
10.1007/s12524-015-0491-z
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发表时间：
2016-04
影响因子：
2.5
通讯作者：
K. V. Satish;C. Reddy
中科院分区：
文献类型：
--
作者：
K. V. Satish;C. Reddy
The main objective of this study is to integrate satellite derived forest burnt areas over a multi-decadal scale to understand fire frequencies in Silent Valley National Park, Kerala, India. There are nine vegetation types distinguished i.e. wet evergreen forest, shola, semi evergreen forest, moist deciduous forest, dry deciduous forest, savannah, reed brakes, scrub and grasslands using Resoursesat-2 LISS III data. The spatial extent of burnt area found to be highly varying and has been estimated as 7.95 km2in 1973, 17.19 km2in 1985, 5.51 km2in 1989, 9.55 km2in 1990, 4.55 km2in 1994, 6.89 km2in 1996 and 5.80 km2in 1999. Analysis of burnt area coverage for recent decade based on 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 reveals fire affected area as 8.10, 4.20, 12.21, 5.52, 3.19, 0.62, 1.81, 2.03, 3.00 and 1.36 km2area respectively. Spatial analysis indicates, an area of 47.51 km2(19.5 % of total vegetation cover) affected by varying frequencies of fires from 1973 to 2014. High frequencies of fires have been observed in dry deciduous forests and grasslands. Buffer zone of national park has undergone frequent fires which may degrade climax forest vegetation and affects the regeneration and adaptability of indigenous species. Spatial tracking reveals 58.1 % grid cells were affected by forest fires. Overall, there is a declining trend of forest fires indicates management effectiveness in Silent Valley National Park.
