中文摘要：

生态环境是人类生存发展的物质基础, 生态环境质量深刻影响着全球变化及区域可持续发展.为了分析玛纳斯河流域的生态环境质量现状及变化特征, 本文以 1993、 2006 和 2016 年的 Landset TM/ETM 影像为数据源, 借助 RSEI 指数, 对玛纳斯河流域的生态环境质量进行监测和动态评价.结果表明：（1）绿度、 湿度、 热度和干度是生态系统的重要组成部分,在此基础上建立的 RSEI 指数可较好的反映玛纳斯河流域生态环境质量状况及其时空分异;（2） 1993、 2006 和2016 年 RSEI 指数均值分别为 0.31、 0.38 和 0.45, 对 RSEI 指数进行分级处理后,发现流域生态环境质量“差” 等级居于主导地位, “优”等级等级急剧增加,流域内生态环境质量向好的方向发展;（3）流域山地 - 绿洲 - 荒漠生态系统（MODS） 内部生态环境较为稳定, 流域内生态环境质量变好的区域远大于变差的区域, 生态质量变差的区域主要集中于南部山区林地、 水域、 城市周边和部分耕地, 生态质量变好的区域主要分布在绿洲内部及边缘.

英文摘要：

Ecological environment is the material basis of human survival and development, and the quality of ecologicalenvironment hasa profound impact on global change and regional sustainable development. To analyze of the ecological environmentquality and change analysis in Manasi River Basin, here we monitored and evaluated the ecological environment quality by usingthe RSEI index based on the Landset TM/ETM images of 1993, 2006 and 2016 as the data source. The results show that （1） thegreenness index, wet index, heat index and dryness index were the important parts of the ecological system; the RSEI indexestablished on this basis can reflect the ecological environment quality and the characteristics of temporal and spatial land-usechange. （2） the RSEI index in 1993, 2006 and 2016 were 0.31, 0.38 and 0.45, respectively; grading of the RSEI index found thatthe 野poor冶 level of the eco-environmental quality was in the dominant position, and the 野excellent冶 rating increased dramaticallyThe 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 thedeteriorated area. The deteriorated area was mainly concentrated in the southern mountain forest land, water area and somecultivated land. The areas with better ecological quality are mainly distributed in the inner and edge of oasis.