LI Xiao-yan1,2, REN Zhi-yuan1*, ZHANG Chong1, LIANG Rui1, DANG Zhen-zhen1
(1 College of Tourism and Environment, Shaanxi Normal University， Xi′an 710062, Shaanxi, China;2 School of History and Tourism, Shaanxi University of Technology, Hanzhong 723000, Shaanxi, China)
Abstract:
Based on GIMMS NDVI data, meteorologic data, vegetation type map and other related materials,the climate restrictive partition of vegetation cover in China were done with the method of correlation analysis of long time series. The results indicate that the western arid areas are mainly restricted by precipitation. High latitude and high elevation areas are restricted by the temperature.The southeast coastal areas with rich precipitation are restricted by radiation. Desert, gobi, waters and so on are not restricted by any factor. There are areas restricted by double factors.There are obvious zonal and warp direction change rules for vegetation cover of China. From 1982 to 2006,vegetation cover change was complex, and the overall trend was better in northwest areas affected by the national related policy.The vegetation cover descend in the southeast areas affected by rapid economic development and human activities. Climate restrictive factors of vegetation growth was regular intensively in China, and regional ecological restoration and agricultural production should be done in combination with the climate limiting factors of vegetation.
KeyWords:
vegetation cover; climate restrictive partition; temporal and spatial change
