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[1]LIU Xuwei,ZHOU Qigang,ZHOU Lang,et al.RSEI-Based Dynamic Monitoring of Ecological Quality of the Soil and Water Conservation Functional Area in the Chongqing Section of the Three Gorges Reservoir Area[J].Research of Soil and Water Conservation,2021,28(05):278-286.

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RSEI-Based Dynamic Monitoring of Ecological Quality of the Soil and Water Conservation Functional Area in the Chongqing Section of the Three Gorges Reservoir Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 05 Page number: 278-286 Column: Public date: 2021-08-20

Title:: RSEI-Based Dynamic Monitoring of Ecological Quality of the Soil and Water Conservation Functional Area in the Chongqing Section of the Three Gorges Reservoir Area

Author(s):: LIU Xuwei^1,2,ZHOU Qigang^2,3,ZHOU Lang^1,2,MENG Haobin^1,2,LI Minghui^1,2,PENG Chunhua^1,2; (1.College of Environment and Resources,Chongqing Technology and Business University,Chongqing 400067,China; 2.Chongqing Key Laboratory of Spatial Data Mining and Big Data Integration for Ecology and Environment,Chongqing 401320,China; 3.School of Public Administration,Chongqing Technology and Business University,Chongqing 400067,China)

Keywords:: ecological environment quality; remote sensing ecological index; dynamic change; functional area of soil and water conservation; Three Gorges Reservoir area

CLC:: X835

DOI:: -

Abstract:: Integrating four indicators of greenness,humidity,heat and dryness to predict the remote sensing ecological index(RSEI)can quickly and quantitatively evaluate the status of the regional ecological environment and objectively reflect the change process of the ecological environment. Based on the data of 1994,2000,2007,2013,2019 Landsat TM/OLI images,we used the remote sensing ecological index to evaluate the ecological environment quality of the soil and water conservation ecological function zone in the Chongqing section of the Three Gorges Reservoir area,and to predict the ecological environment quality of the study area in 2025. The results show that the constructed RSEI index can reflect the ecological environment quality of the water and soil conservation ecological function zone in the Chongqing section of the Three Gorges Reservoir. The RSEI value increased from 0.525 to 0.653 from 1994 to 2019,with the increase rate of 24.38%,and the area of improvement in ecological environment quality was 6 265.673 km²,the proportion was 59.78%,the area of the degraded area was 604.789 km²,and the proportion is 5.77%. The overall quality of the ecological environment was improved obviously and tended to be stable; from the spatial distribution,the improvement area of the study area distributed widely,mainly concentrated the whole area of Fengjie County and Yunyang County,while the degraded areas concentrated in the main urban areas of the study area and villages and towns of a certain scale within the jurisdiction,as well as the northern and southeastern areas of Wushan County. The overall improvement of the study area was obvious. The predicted 2025 RSEI will continued to rise,but the rate of increase will slow down significantly. Therefore,the study area should continue to conduct ecological management and protection in the subsequent ecological environment construction. The research results have realized the rapid monitoring of the ecological environment quality in the ecological function zone of soil and water conservation,which can provide a scientific basis for its ecological governance.

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Last Update: 2021-08-20