山东省沿黄九市生态分析评估

Ecological Analysis and Assessment of Nine Cities along theYellow River in Shandong Province

为揭示2000—2020年间山东省沿黄九市生态质量的时空变化,本研究利用GEE平台,基于MODIS产品影像集计算了遥感生态指数(RSEI),并结合Theil-Sen Median对研究区的生态质量进行趋势分析。结果表明:1)2000—2020年间,沿黄九市的RSEI整体呈现出中和良等级,且南部高于北部,西部高于东部。生态环境质量整体向好发展;2)沿黄九市RSEI提升的面积占研究区总面积的65.78%,其中显著提升的面积占18.40%。RSEI降低的面积占研究区总面积的20.33%,其中显著降低的面积仅占0.27%。研究表明,山东省沿黄九市生态质量呈整体好转、局部退化现象。研究结果可为研究区域生态环境治理提供一定的参考。

In order to reveal the spatial and temporal changes of ecological quality of nine cities along the Yellow River from 2000 to 2020,this study used GEE platform to calculate remote sensing ecological index(RSEI)based on MODIS product imageset,and combined with Theil-Sen Median to analyze the trend of ecological quality in the study area.The results show as follows:1)From 2000 to 2020,the overall RSEI of nine cities along the Yellow River shows a neutral and good grade,and the RSEI in the south is higher than that in the north,and the west is higher than the east.The overall development of ecological environment quality is impro-ving.2)The area of RSEI improvement accounted for 65.78%of the total area ofnine cities along the Yellow River,and the area of significant improvement accounted for 18.40%.The area of RSEIdecrease accounted for 20.33%of the total area of the study area,and the area of significant decrease accounted for only 0.27%.The results show that the ecological quality of nine cities along the Yellow River has improved overall and degraded locally.The results can provide some references for the study of regional eco-environ-mental governance.