Evaluation of natural ecological environment change in Manasi River Basin based on RSEI
Ecological environment is the material basis of human survival and development,and the quality of ecological environment has a profound impact on global change and regional sustainable development.To analyze of the ecological environment quality and change analysis in Manasi River Basin,here we monitored and evaluated the ecological environment quality by using the RSEI index based on the Landset TM/ETM images of 1993,2006 and 2016 as the data source.The results show that:(1) the greenness index,wet index,heat index and dryness index were the important parts of the ecological system;the RSEI index established on this basis can reflect the ecological environment quality and the characteristics of temporal and spatial land-use change.(2) the RSEI index in 1993,2006 and 2016 were 0.31,0.38 and 0.45,respectively;grading of the RSEI index found that the "poor" level of the eco-environmental quality was in the dominant position,and the "excellent" rating increased dramatically The quality of the ecological environment is getting better,(3) the ecological environment of the Mountain-Oasis-Desert ecosystem (MODS) was relatively stable,and the area of the ecological environment quality improvement was much larger than that in the deteriorated area.The deteriorated area was mainly concentrated in the southern mountain forest land,water area and some cultivated land.The areas with better ecological quality are mainly distributed in the inner and edge of oasis.
ecological environmentRSEItemporal and spatial variationManasi River Basin
NETL
NSTL
万方数据
维普
