[1]HOU Rui,LI Hongbo,GAO Yanli.Ecological Risk Assessment of Land Use in Jiangxia District of Wuhan Based on Landscape Pattern[J].Research of Soil and Water Conservation,2021,28(01):323-330.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
323-330
Column:
Public date:
2021-01-10
- Title:
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Ecological Risk Assessment of Land Use in Jiangxia District of Wuhan Based on Landscape Pattern
- Author(s):
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HOU Rui, LI Hongbo, GAO Yanli
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(College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China)
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- Keywords:
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land ecological; landscape pattern; ecological risk assessment; Jiangxia District
- CLC:
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F301.2
- DOI:
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- Abstract:
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Ecological risk assessment of land use is a basis for the systematic management of mountains, rivers, forests, farmlands, lakes and grasslands, and is of great significance for optimizing the regional ecological security pattern. Based on the interpretation data of remote sensing images from 2000 to 2015, we analyzed the spatial and temporal patterns of land-use dynamic changes in Jiangxia District of Wuhan, and then used the spatial grid to construct land-use ecological risk index in Jiangxia, which based on landscape pattern, in order to explore the spatial distribution and variation characteristics of ecological risks. Next, we explored the evolution process of ecological risk under different land use types and its response elasticity mechanism. The results are shown as follows.(1)The main land types in Jiangxia District were cultivated land and waters. During the study period, 8.41% of the cultivated land was changed into construction land, which concentrated in the northern part of Jiangxia and gradually expanded to the surroundings.(2)The spatial distribution of land-use ecological risks were obviously different, and showed the agglomeration effect. In addition, the local spatial difference was also increasing.(3)In the past 15 years, the overall ecological risk of the study area had increased. The average value of the ecological risk index had increased from 0.117 4 to 0.190 8. The area ratio of low-level ecological risk zone had decreased from 49.81% to 0.01%. The area of other-levels ecological risk zone had increased in different extent.(4)Arable land, construction land, and water area were less threatened by ecological risks, and the ecological risk of unused land was the highest. In addition, the impact of land use change on ecological risk continued to weaken, and the impact factors of ecological risk were more diversified.