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[1]LI Yimin,WANG Dongchi,YUAN Jing,et al.Remote Sensing Evaluation of Ecological Environment Quality in Lushui City Under the Influence of the Conversion of Cropland to Forest Project[J].Research of Soil and Water Conservation,2021,28(04):266-274.

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Remote Sensing Evaluation of Ecological Environment Quality in Lushui City Under the Influence of the Conversion of Cropland to Forest Project

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 04 Page number: 266-274 Column: Public date: 2021-08-10

Title:: Remote Sensing Evaluation of Ecological Environment Quality in Lushui City Under the Influence of the Conversion of Cropland to Forest Project

Author(s):: LI Yimin^1,2, WANG Dongchi¹, YUAN Jing¹, LIU Xinzhi¹; (1.School of Earth Sciences, Yunnan University, Kunming 650500, China; 2.Research Center of Domestic High-Resolution Satellite Remote Sensing Geological Engineering, Kunming 650500, China)

Keywords:: ecological environment quality; Conversion of Cropland to Forest Project; RSEI; principal component analysis

CLC:: TP79;X171.1

DOI:: -

Abstract:: In order to understand the spatial and temporal variation of ecological environment quality in the context of the implementation of the fallow forestry project, based on Landsat TM/OLI remote sensing images from 2001 to 2018, the Remote Sensing Ecological Index(RSEI)was selected to carry out a study on the dynamic changes of ecological environment quality in Lushui City, and to analyze the interrelationship between ecological environment quality changes and the Conversion of Cropland to Forest Project on this basis. The results show that:(1)The RSEI values of Lushui City in 2001, 2006, 2013 and 2018 were 0.750, 0.759, 0.667 and 0.683, respectively; the overall quality of the ecological environment showed the downward trend in fluctuations; after the graded treatment, the ecological environment quality was dominated by ‘poor',‘medium' and ‘good' grades, which accounted for more than 97% of the total;(2)the spatial distribution of ecological environmental quality in Lushui City was coincident with the topographical features of the alpine canyon; The RSEI grade areas on both sides of the Nujiang River exhibited east-west symmetry; in terms of changes, the ecological environment in the valley of the Nujiang River system has deteriorated significantly, while the middle-high mountain areas have improved; after superimposing the spatial distribution of human activities, human activities were found to be the important cause of the overall decline in the quality of the local ecological environment;(3)Lushui City's Conversion of Cropland to Forest Project had achieved remarkable results, with a 24% reduction in farmland between 2001 and 2018, of which another 64.74% had slopes greater than 25°. The cumulative change in the areas of Conversion of Cropland to Forest Project and the changes in RSEI were highly correlated with correlation coefficients of 0.767 and 0.833. It is shown that the Conversion of Cropland to Forest Project has a positive impact on the local ecological environment.

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Last Update: 2021-08-20