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[1]HUANG Xin,CHENG Wenshi,LI Xiaodan,et al.Recognition on the Changes and Driving Factors of Eco-environmental Effect of Land Use Transformation in Arid Inland River Basin[J].Research of Soil and Water Conservation,2023,30(02):324-332.[doi:10.13869/j.cnki.rswc.2023.02.040]

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Recognition on the Changes and Driving Factors of Eco-environmental Effect of Land Use Transformation in Arid Inland River Basin

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 30 Number of periods: 2023 02 Page number: 324-332 Column: Public date: 2023-03-10

Title:: Recognition on the Changes and Driving Factors of Eco-environmental Effect of Land Use Transformation in Arid Inland River Basin

Author(s):: HUANG Xin, CHENG Wenshi, LI Xiaodan, YANG Changyu, HUANG Qianqian; (College of Management, Gansu Agriculture University, Lanzhou 730070, China)

Keywords:: land use transformation; eco-environmental effects; standard devotional ellipse; Geo-detector; the middle reaches of Heihe River Basin

CLC:: F301.2; X171.1

DOI:: 10.13869/j.cnki.rswc.2023.02.040

Abstract:: In order to explore the impact of land use transformation on eco-environmental quality and to clarify the mechanism of relevant driving factors, taking the middle reaches of Heihe River Basin, a typical arid inland river basin, as the research object, with the help of eco-environmental quality index, standard devotional ellipse model and the Geo-detector tools, we successively measured the quantitative change, the spatial distribution as well as the directional characteristics of eco-environmental effects of land use transformation from 2000 to 2020 of the study area, and based on that, the driving factors that may affect the spatial differentiation of the eco-environmental quality and their interaction mechanism were further identified and analyzed. The results showed that:(1)land use transformation occurred frequently in the middle reaches of Heihe River Basin from 2000 to 2020, with a conspicuous increase in forest land, shrub land and man-made surface, and a decrease in the area of grassland, bare land, as well as the wetland; however, the spatial distribution characteristics of ‘grassland in the south and bare land in the north' had not been reversed; grassland and bare land were the most important transformation supply sources for the other land types in the basin;(2)the eco-environmental quality in the middle reaches of Heihe River Basin was still at a low level as a whole, but the development showed a positive trend in the same time; the spatial distribution pattern of ‘low in the north and high in the south' was prominent; in the past 20 years, the eco-environmental quality of the basin had changed dramatically, and the change range had expanded, which presented an overall change trend from due northwest direction to due southeast direction;(3)the results of geographical detector indicated that human activities, elevation, vegetation cover as well as the slope factors were the main driving factors for the spatial differentiation of eco-environmental quality in Heihe River Basin; in addition, the fierce interaction and synergy among natural, social and economic factors jointly led to the spatial differentiation effect of eco-environmental quality in the study area. In conclusion, the eco-environmental quality in the middle reaches of Heihe River Basin tended to be good, but human activities should be strictly controlled to ensure the sustainable and stable land use and ecological security of this basin.

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Last Update: 2023-03-10