[1]CAO Can,Sun Rui,WU Zhixiang,et al.Responses of Streamflow to Land Use/Cover Changes in Nandu River Basin Based on SWAT Model[J].Research of Soil and Water Conservation,2022,29(04):167-175.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 04
Page number:
167-175
Column:
Public date:
2022-06-20
- Title:
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Responses of Streamflow to Land Use/Cover Changes in Nandu River Basin Based on SWAT Model
- Author(s):
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CAO Can1,2, Sun Rui2,3, WU Zhixiang2,3, LI Qian1
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(1.School of Geography and Planning, Ningxia University, Yinchuan 750021, China; 2.Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China; 3.Hainan Danzhou Tropical Agro-ecosystem National Observation and Research Station, Danzhou, Hainan 571737, China)
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- Keywords:
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LUCC; streamflow response; SWAT model; Nandu River Basin; Hainan Island
- CLC:
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P333
- DOI:
-
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- Abstract:
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In order to explore the hydrological effects of land use/cover change(LUCC)in tropical island watersheds, taking the Nandu River Basin, a typical tropical island basin in Hainan Island, China, as the study area, we constructed a localized soil and water assessment tool(SWAT model)to simulate the hydrological process and its response to LUCC, with an aim to reveal the changes of streamflow. The streamflow effects of LUCC could be explored in typical tropical island basin. The hydrological processes and storage capacity of different land use types were compared. The results were summarized as follows. The SWAT model had good applicability in the Nandu River Basin. Streamflow simulation based on the SWAT model was sensitive to vegetation evapotranspiration, slope conditions, soil conditions and groundwater processes. The order of contribution of different land use types to streamflow generation in the basin was tillage land, other forest land and rubber plantation. The strongest flow yield capacity of tillage land was found, while a certain interception and water storage effect were found in other forest land and rubber plantation. To sum up, compared with 1990, the river streamflow decreased in 2015 in Nandu River Basin. The decrease of surface runoff caused by LUCC was the direct reason for the decrease of streamflow, while the increase of evapotranspiration was the main reason for the decrease of surface runoff.