基于遥感生态指数的信江流域生态环境质量评价  

Evaluation of Ecological Environment Quality in Xinjiang River Basin Based on Remote Sensing Ecological Index

作　　者：吴峰 李沛鸿[1] 熊凡 袁逸敏 WU Feng;LI Peihong;XIONG Fan;YUAN Yimin(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology Jiangxi Ganzhou,341000,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000

出　　处：《长江信息通信》2022年第11期29-33,共5页Changjiang Information & Communications

摘　　要：随着城镇化进程的不断推进,流域生态环境状况越来越受到人们的重视。快速高效地对流域生态环境质量进行客观评价,是实施流域生态保护与社会可持续发展的必然需求。以信江流域为研究区,通过遥感影像提取绿度、湿度、干度、热度4个指标,用主成分分析法对各指标耦合,建立遥感生态指数模型,对研究区2000-2021年的生态环境质量进行了长时序的监测评价。结果表明:遥感生态指数模型(RSEI)可以很好地对流域的生态环境质量进行监测与评价;信江流域的RSEI指数呈先上升、后下降的趋势,RSEI均值在0.60以上,整体生态环境质量较好,但2017-2021年质量有所下降;研究区的生态环境质量呈“南北优于中部、南部优于北部”的空间格局展现。With the continuous advancement of the urbanization process, more and more attention has been paid to the ecological environment of the river basin. The objective evaluation of the ecological environment quality of the river basin quickly and efficiently is an inevitable requirement for the implementation of the ecological protection of the river basin and the sustainable development of society. This paper takes the Xinjiang River Basin as the research area, extracts four indicators of greenness, humidity,dryness, and heat through remote sensing images, and uses the principal component analysis method to couple the indicators to establish a remote sensing ecological index model, in order to conduct a long-term monitoring and evaluation of the ecological environment quality of the study area from 2000 to 2021. The results show that the remote sensing ecological index model(RSEI)can monitor and evaluate the ecological environment quality of the river basin very well;the RSEI of the Xinjiang River basin shows a trend of first rising and then falling, with the average RSEI value of more than 0.60, and the overall ecological environment quality is relatively high, but the quality has declined from 2017 to 2021;the ecological environment quality of the study area is shown in the spatial pattern of "the north and south are better than the middle, and the south is better than the north".

关 键 词：信江流域 遥感生态指数 生态环境质量评价 主成分分析 

分 类 号：X826[环境科学与工程—环境工程]