Evaluation of Eco-environmental Quality in Jinzhai County Based on Modified Remote Sensing Ecological Index
The objectives of this study are quantitatively evaluating the quality of regional ecological environment,objectively reflecting the process of ecological environment changes,and providing scientific basis for regional ecological environment protection,governance,and development planning.Based on Landsat 8 satellite images from four periods of 2014,2016,2018 and 2020,introducing a normalized mountain vegetation index and integrating four indicators:greenness,humidity,heat and dryness to construct an improved remote sensing ecological index(MRSEI),spatiotemporal distribution mapping and dynamic changes of ecological environment quality were analyzed to explore the cyclic ecological environment status and variation reasons in Jinzhai County.The results indicated that MRSEI is scientific and could comprehensively reflect the ecological environment quality and spatiotemporal differentiation characteristics of the study area.Within the research period,the ecological environment quality of Jinzhai County was relatively high.The proportions of'excellent'and'good'areas continued to increase,but the old county in the northeast and its surrounding ecological environment showed poor quality.The MRSEI of the study area increased from 0.668 in 2014 to 0.869 in 2020,indicating a continuous improvement in ecological environment quality.
ecological environment qualitymodified remote sensing ecological indexremote sensingdynamic monitoringJinzhai County
万方数据
维普
