[1]KE Xinli,PU Kunpeng,YANG Bohan,et al.Impacts of Cultivated Land Protection on Water Retention Function of Ecosystem—A Case Study in Wuhan[J].Research of Soil and Water Conservation,2018,25(01):391-396,402.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 01
Page number:
391-396,402
Column:
Public date:
2018-02-28
- Title:
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Impacts of Cultivated Land Protection on Water Retention Function of Ecosystem—A Case Study in Wuhan
- Author(s):
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KE Xinli, PU Kunpeng, YANG Bohan, ZHENG Weiwei
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College of Public Administration, Huazhong Agricultural University, Wuhan 430070, China
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- Keywords:
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cultivated land protection; Wuhan; water retention; LANDSCAPE model; InVEST model
- CLC:
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S727.21
- DOI:
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- Abstract:
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Cultivated land protection policy is the fundamental guarantee of food security in China. However, under the background of rapid urbanization, the impact of cultivated land protection on ecosystem services through the way of ecological land occupation is often neglected. We take Wuhan City as an example, the impact of cultivated land protection on water retention function of ecosystem is evaluated by model simulation method. LANDSCAPE, a land use optimization model based on cellular automata model, is used to set up the scenarios of strict cultivated land protection and moderate cultivated land protection, respectively. The land use/land cover scenarios are simulated in 2020, and the InVEST model of ecosystem service function evaluation is compared about water conservation function of the spatial pattern and quantitative assessment in Wuhan under different scenarios, which provides the basis for scientifically understanding the effect of cultivated land protection policy. It concludes that, first, there is a significant spatial difference of water retention function of Wuhan in 2020 under the condition of strict cultivated land protection and moderate cultivated land protection. Under the situation of strict cultivated land protection, the distribution range of low water retention area in northeastern part of Wuhan is much more than that of the moderate cultivated land policy, however, the distribution of high water retention area in the strict cultivated land protection situation is less; second, the total amount of water retention under the protection of strict cultivated land is 4.33×108 m3, and 4.58×108 m3 in the moderate cultivated land, there is a significant difference; third, the water retention amounts of the ecological lands are 1.06×108 m3 and 1.27×108 m3 in the scenario of strict cultivated land protection and moderate cultivated land protection, respectively. The water retention amount of forest land is the highest, followed by wetland and grassland.