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[1]Xu Yun,Gao Mingkun,Zhang Zengxin.Land Use Change and Its Impact on Habitat Quality in the Middle and Lower Reaches of the Yangtze River Based on InVEST Model[J].Research of Soil and Water Conservation,2024,31(05):355-364.[doi:10.13869/j.cnki.rswc.2024.05.032]

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Land Use Change and Its Impact on Habitat Quality in the Middle and Lower Reaches of the Yangtze River Based on InVEST Model

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 31 Number of periods: 2024 05 Page number: 355-364 Column: Public date: 2024-08-10

Title:: Land Use Change and Its Impact on Habitat Quality in the Middle and Lower Reaches of the Yangtze River Based on InVEST Model

Author(s):: Xu Yun, Gao Mingkun, Zhang Zengxin; (Co-Innovation Center for the Sustainable Forestry in Southern China, College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China)

Keywords:: the middle and lower reaches of the Yangtze River; land use change; InVEST model; habitat quality; habitat degradation

CLC:: S718.53

DOI:: 10.13869/j.cnki.rswc.2024.05.032

Abstract:: [Objective]Habitat quality is the potential of ecosystems to provide the necessary conditions for species' survival and reproduction, and is the key to improving ecosystem functions. Studying the habitat quality of the Yangtze River Basin is of great significance for national major strategies such as green development of the Yangtze River Economic Belt and the protection of the Yangtze River. [Methods]Based on land use data from 1980 to 2018 in the middle and lower reaches of the Yangtze River, the InVEST model was used to study the spatiotemporal changes in land use change, habitat quality, and habitat degradation in the middle and lower reaches of the Yangtze River from 1980 to 2018. [Results](1)As the main type of land use in the study area, woodland was decreasing, mainly turning to construction land and water area, which greatly reflected the driving effect of population growth, economic development and environmental protection on the change of land use structure.(2)The overall habitat quality of the study area was at a high level, showing a trend of low in the east and middle, and high in the south, which was consistent with the land use pattern that most of the cities along the Yangtze River in the east and middle of the study area were dominated by construction land, and the south was dominated by woodland and grassland.(3)In the study area, the degree of habitat degradation was higher in the central area and lower in the surrounding area. The change of the degree of habitat degradation showed an upward trend in time, and the areas where the degree of habitat degradation changes were more concentrated in space, such as the urban agglomeration along the river, urban and rural areas and other population agglomerations. [Conclusion]The habitat evolution in the middle and lower reaches of the Yangtze River is in a process of degradation. The process of urbanization makes a large number of woodland, grassland and cultivated land in land use turn to construction land, which leads to the continuous decline of habitat quality, especially the problem of the urban agglomeration along the Yangtze River. We should develop construction land more reasonably and draw the ecological protection red line, gradually restore and improve the habitat quality of the middle and lower reaches of the Yangtze River, and make a positive contribution to the process of the Yangtze River protection.

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Last Update: 2024-08-10