Spatiotemporal change of ecological capacity of Lancang River Valley in Yunnan Province
Lancang River Valley has a complicated geographical context, rich biological resources, frangible eco-environment and intensive human disturbance. In this region, there are great differences between ecological security level and ecological capacity. Analyzing the spatiotemporal changes of ecological capacity is important for government to manage the development of Lancang River Valley. In a case study of each county in the region, we used the method of ecological footprint to study spatiotemporal change of ecological capacity in different period. We compared the values of ecological capacity with that calculated by the theory of net primary productivity (NPP for short) in order to analyze the differences between two methods. The results showed as follow: (1) Ecological capacity of Lancang River Valley reduced year by year. (2) Ecological capacity had a negative correlation with population density. But its pattern of distributing was consistent with that of ecological capacity. (3) Ecological capacity Calculated by NPP increased gradually from north to south. Comparing with two methods, ecological capacity calculated by NPP was considered as maximum capacity in theoretical, and that by ecological footprint as real value.
Lancang River Valley ecological capacity ecological fooeprint net primary productivity
Shiliang Liu Minxia Wen Baoshan Cui Min Yang
School of Environment, State Key Laboratory of Water Environment of Simulation Beijing Normal Univer School of Environment, State Key Laboratory of Water Environment Simulation Beijing Normal Universit
国际会议
上海
英文
4391-4395
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）