STUDY ON THE SPATIAL-TEMPORAL EVOLUTION OF COUPLING COORDINATED DEGREE OF RURAL REVITALIZATION AND ECO-ENVIRONMENTAL SYSTEM IN BORDER ETHNIC AREAS
To clarify the evolution pattern of the coupling and coordination relationship between rural revitalization and ecological environment,so as to provide scientific reference for the high-quality development of characteristic areas. Based on the research framework of coupling and coordination of rural revitalization-eco-environmental system,Guangxi Zhuang Autonomous Region in frontier minority area was taken as an example,and a comprehensive evaluation index system for rural revitalization and development level and a remote sensing ecological index ( RSEI ) was constructed to measure the rural revitalization development level and ecological environment quality of Guangxi Zhuang Autonomous Region and its 14 prefecture-level cities from 2003 to 2021,then the coupling coordination degree model was used to analyze the spatial-temporal evolution mechanism of the coupling and coordinated development of rural revitalization-eco-environmental system in this region. As a result,there were three conclusions were listed as follows. Firstly,from 2003 to 2021,the rural revitalization index of Guangxi Autonomous Region increased from 0.222 to 0.730,showing an upward trend in fluctuation,and the overall level was not high. The level of rural revitalization in each prefecture-level city had increased steadily,but the difference was large,showing a spatial pattern of "the rural revitalization and development level of the two major central cities was significant,and the development level of the remaining cities was low". Secondly,from 2003 to 2021,the average value of the ecological environment index of Guangxi Autonomous Region was 0.686,and the ecological environment quality was at a good level. The overall trend was slightly rising,and the average RSEI of each prefecture-level city had little difference. The ecological environment quality of the central and northern regions had obviously improved. Finally,from 2003 to 2021,the coupling coordination degree of rural revitalization-eco-environmental system in Guangxi Autonomous Region was low,and the overall performance presented a slow upward trend. The coupling coordination degree increased from 0.529 to 0.657,and the coupling coordination type changed from weak coordination to low coordination. Therefore,in the future,it is expected to deepen the research on the internal mechanism of the coupling and coordinated development of rural revitalization-eco-environmental system,so as to promote rural revitalization with ecological environment and strengthen ecological environment with rural revitalization.
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