MODELING PRECIPITATION DEPENDENT FOREST RESILIENCE IN INDIA
The impact of long term climate change that imparts stress on forest could be perceived by studying the regime shift of forest ecosystem.With the change of significant precipitation,forest may go through density change around globe at different spatial and temporal scale.The 100 class high resolution(60 meter spatial resolution)Indian vegetation type map was used in this study recoded into four broad categories depending on phrenology as(i)forest,(ii)scrubland,(iii)grassland and(iv)treeless area.The percentage occupancy of forest,scrub,grass and treeless were observed as 19.9%,5.05%,1.89%and 7.79%respectively.Rest of the 65.37%land area was occupied by the cropland,built-up,water body and snow covers.The majority forest cover were appended into a 5km × 5 km grid,along with the mean annual precipitation taken from Bioclim data.The binary presence and absence of different vegetation categories in relates to the annual precipitation was analyzed to calculate their resilience expressed in probability values ranging from 0 to 1.Forest cover observed having resilience probability(Pr)< 0.3 in only 0.3%(200 km2)of total forest cover in India,which was 4.3%< 0.5 Pr.Majority of the scrubs and grass(64.92%Pr < 0.5)from North East India which were the shifting cultivation lands showing low resilience,having their high tendency to be transform to forest.These results have spatial explicitness to highlight the resilient and non-resilient distribution of forest,scrub and grass,and treeless areas in India.
Resilience Total Annual Precipitation Logistic Regression Forest Climate Regime Change Proneness
P.Das M.D.Behera P.S.Roy
Centre for Oceans,Rivers,Atmosphere and Land Sciences(CORAL),Indian Institute of Technology Kharagpu Centre for Earth,Ocean and Atmospheric Sciences,University of Hyderabad,Hyderabad,India
国际会议
北京
英文
263-266
2018-05-07（万方平台首次上网日期，不代表论文的发表时间）