基于TM数据的阿克苏市生态环境质量指数RSEI动态变化分析

Dynamic Change Analysis of Remote Sensing Ecological Index in Aksu Based on TM Data analysis

【目的】区域的生态环境质量问题是当今人们所共同面对的、需要优先研究并且重大解决的问题。现如今计算机领域技术不断发展,"3S"技术的快速提升,为生态环境质量评价体系提供了新的机会。【方法】本研究以阿克苏市1992、2000和2016年3个时期的Landsat系列遥感影像为基础数据源,利用ENVI 5.1、Arcgis 10.0等软件进行数据的后期处理,综合计算了阿克苏市的遥感生态指数(RSEI)。【结果】在大区域尺度上:1992-2000年间研究区生态环境质量略微下降,随后在2000-2016年间生态环境质量有所好转;在小区域尺度上:依干其乡、拜什吐格曼乡、市直属(荒漠、沙漠区域)的环境明显向好的方向发展。【结论】1992-2000年间阿克苏地区总体生态环境质量略微有所下降,下降幅度为-0.08,之后在2000-2016年间阿克苏地区的生态环境质量有所上升,上升幅度为+0.11。总体而言,自上世纪九十年代以来,阿克苏市生态环境质量总体向好的方向发展。

[Objective] The quality of the ecological environment problem in the region is a problem that people face today and needs priority research and major solutions. Nowadays, the technology in the field of computer technology is constantly developing, and the rapid improve ment of ‘3S' technology has provided new opportunities for the evaluation system of ecological environment quality.[Methods] This study used the Landsat series of remote sensing images from Aksu city in 1992 , 2000 and 2016 as the basic data source, and used ENVI5.1, Arc- gis 10.0 and other software to post-process the data, and comprehensively calculated the remote sensing ecological index of Aksu city.(RSEI).[Results]On the large regional scale: the ecological environment quality of the study area decreased slightly between 1992 and 2000, and then the ecological environment quality improved in 2000- 2016;on the small regional scale: Yiganqixiang, Baishi Tugman The environment directly under the township and city ( desert, desert areas) is clearly developing in a good direction.[Conclusion] The overall ecological environment quality of the Aksu area decreased slightly during the period from 1992 to 2000, with a decrease of-0.08. After 2000-2016, the ecological environment quality of the Aksu area increased, with an increase of + 0. 11. Overall, since the 1990s, the quality of the ecological environment in Aksu has generally developed in a good direction.