[1]WANG Peng,ZHAO Wei,KE Xinli.Evaluation and Spatiotemporal Evolution of Ecological Vulnerability of Qianjiang Based on SRP Model[J].Research of Soil and Water Conservation,2021,28(05):347-354.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 05
Page number:
347-354
Column:
Public date:
2021-08-20
- Title:
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Evaluation and Spatiotemporal Evolution of Ecological Vulnerability of Qianjiang Based on SRP Model
- Author(s):
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WANG Peng,ZHAO Wei,KE Xinli
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(College of Public Administration,Huazhong Agricultural University,Wuhan 430070,China)
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- Keywords:
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ecological vulnerability; geo-informatic spectrum; space principal component analysis; kilometer grid; Qianjiang City
- CLC:
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X826
- DOI:
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- Abstract:
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In order to explore the ecological vulnerability of city in Central China,14 indicators were selected based on Ecological Sensitivity-Ecological Recovery-Ecological Pressure(SRP)model,and spacial principal component analysis and geo-informatic spectrum method were employed. A case study of Qiangjiang was carried out to assess its ecological vulnerability as well as spatio-temporal evolution from 2008 to 2017 on the kilometer-grid scale. The results show that:(1)the ecological vulnerability of Qianjiang was influenced by human activities and natural conditions,and the influence of human activities was gradually strengthening during the period;(2)from 2008 to 2017,areas of slight and light vulnerability accounted for about 70% of Qianjiang,indicating that the overall ecological vulnerability kept at a good level; the areas of severe,strong,moderate,light and slight vulnerability distributed in circles from the center of urban built-up;(3)during the research period,the ecological vulnerability of Qianjiang increased slightly; the index of ecological vulnerability increased for most towns,but it decreased by 0.32 and 0.10 for Haokou and Taifeng; the TUPU with changing ecological vulnerability was summed to 1 176.40 km2,in which ‘light to moderate',‘slight to light',‘light to slight' and ‘moderate to strong' were the major transforms,with a percentage of 26.11%,22.38%,15.55% and 8.83%,respectively; as the top rising and top falling TUPU,the moderate vulnerability increased by 410.52 km2 and the light vulnerability reduced by 556.77 km2. These results could provide useful help for the protection and restoration of ecological environment in the study area.