应用遥感生态指数评价生态环境质量  

Evaluation of ecological environment quality using remote sensing ecological index

作　　者：闫野[1] YAN Ye(Railway Engineering College,Liaoning Railway Vocational and Technical College,Jinzhou Liaoning 121000,China)

机构地区：[1]辽宁铁道职业技术学院铁道工程学院,辽宁锦州121000

出　　处：《北京测绘》2023年第2期218-225,共8页Beijing Surveying and Mapping

摘　　要：遥感生态指数(RSEI)是一种可靠、高效的城市生态质量评价方法,本文利用Landsat8卫星数据提取湿度、绿度、热度以及干度信息,构建遥感生态指数评价模型,对宁波市生态质量进行研究。结果显示,宁波市2015、2017和2020年RSEI均值分别为0.84、0.83和0.78,评级在一般及以上的面积比例对应为85.94%、85.66%、85.19%,说明2015—2020年宁波市生态质量变化总体较为稳定,略微呈下降的趋势,RSEI类型变化检测以不变为主,变差为次。Remote sensing ecological index(RSEI)is a reliable and efficient urban ecological quality evaluation method.Landsat8 satellite data were applied to extract humidity,greenness,heat and dryness information,and construct a remote sensing ecological index evaluation model to study and analyze the ecological quality of Ningbo.The results showed that the average values of RSEI in Ningbo in 2015,2017 and 2020 were 0.84,0.83 and 0.78,respectively,and the proportion of areas with general and above ratings was 85.94%,85.66% and 85.19%,respectively,indicating that the overall change of ecological quality in Ningbo from 2015 to 2020 was relatively stable,showing a slightly downward trend.The change detection of RSEI types was mainly unchanged,and the variation was secondary.

关 键 词：生态环境质量 遥感生态指数(RSEI) 主成分分析(PCA) 评价模型 

分 类 号：P237[天文地球—摄影测量与遥感]