[1]WANG Tong,YI Guihua,ZHANG Tingbin,et al.Spatial and Temporal Pattern of Habitat Quality and Its Topographic Gradient Effect in the Three-River Basin of Southwest China[J].Research of Soil and Water Conservation,2023,30(05):306-314.[doi:10.13869/j.cnki.rswc.2023.05.011.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 05
Page number:
306-314
Column:
Public date:
2023-08-10
- Title:
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Spatial and Temporal Pattern of Habitat Quality and Its Topographic Gradient Effect in the Three-River Basin of Southwest China
- Author(s):
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WANG Tong1, YI Guihua2, ZHANG Tingbin1,3, LI Jingji3,4, BIE Xiaojuan2, LIN Mengnan1
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(1.College of Earth Science, Chengdu University of Technology, Chengdu 610059, China; 2.College of Tourism and Urban-Rural Planning, Chengdu University of Technology, Chengdu 610059, China; 3.State Environmental Protection Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, Chengdu University of Technology, Chengdu 610059, China; 4.College of Ecological Environment, Chengdu University of Technology, Chengdu 610059, China)
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- Keywords:
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habitat quality; InVEST model; topographic position index; the three-river basin in southwest China
- CLC:
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K928; X826
- DOI:
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10.13869/j.cnki.rswc.2023.05.011.
- Abstract:
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[Objective] The aims of this study are to analyze land use change and study the dynamic changes of habitat quality in the three southwest river basins under the influence of land use change, and then provide reference for the conservation of regional biodiversity, rational use of land resources and sustainable development of ecological environment. [Methods] The InVEST model was used to evaluate the spatial and temporal patterns of habitat quality in the Southwest Three Rivers Basin from 2000 to 2020, and the topographic distribution characteristics of habitat quality were analyzed using the topographic position index. [Results] The high habitat quality mainly distributed in the central and northern parts of the study area in Changdu City, Ganzi Prefecture, Diqing Prefecture, Nujiang Prefecture, Liangshan Prefecture and northern Yushu Prefecture, while the low habitat quality mainly distributed in the southern parts of Kunming City and Lincang City. In the past 20 years, the average habitat quality of the three southwestern rivers had increased with the rise in topographic position, and the trend of habitat quality on the topographic gradient was ‘two up and three down', with the habitat quality of class I and Ⅱ increasing and that of class Ⅲ, Ⅳ and V decreasing. [Conclusion] Habitat quality in the three southwestern river basins is significantly correlated with topography, and the attention should be paid to the influence of topography on habitat quality in the basins in the future.