[1]LIU Beilei,LI Peng,YANG Yuanyuan,et al.Response of Variation of Runoff and Sediment to Landscape Pattern in Huangfuchuan Basin[J].Research of Soil and Water Conservation,2021,28(05):102-107.
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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:
102-107
Column:
Public date:
2021-08-20
- Title:
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Response of Variation of Runoff and Sediment to Landscape Pattern in Huangfuchuan Basin
- Author(s):
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LIU Beilei1,LI Peng1,2,YANG Yuanyuan1,REN Zongping1,2,LONG Shaobo3
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(1.State Key Laboratory of Eco-hydraulics in Northwest Arid Region of China,Xi'an University of Technology,Xi'an 710048,China; 2.Key Laboratory of on Ecological Hydrology and Disaster Prevention in Arid Regions,National Forestry Administration,Xi'an University of Technology,Xi'an 710048,China; 3.Institute of Soil and Water Conservation,Northwest A&F University,Yangling,Shaanxi 712100,China)
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- Keywords:
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runoff and sediment variation; land use; landscape index
- CLC:
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X171.1
- DOI:
-
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- Abstract:
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In order to study the landscape pattern of Loess Plateau under the background of sediment reduction in the Yellow River,this paper aims to explore the influence of landscape pattern on runoff and sediment. Unitary linear regression method and moving average method were used to study the characteristics of runoff and sediment in the basin. Based on ArcGIS 10.2 software and FRAGSTATS 4.2 software,we analyzed the characteristics of watershed land use and landscape pattern. Redundancy Analysis and other method were used to analyze the response of runoff and sediment in watershed to landscape pattern. The results show that: the distributions of rainfall,runoff and sediment transport in Huang-Fu-Chuan Basin were uneven within a year,and there was a downward trend from year to year,and the abrupt transition points of runoff and sediment transport occurred in 1984 and 1988,respectively; the main type of land use in Huang-Fu-Chuan Basin was grassland which accounted for about 65% of the total area of the basin,and the grassland changed the most,while the changes of water area and construction land were not obvious; the landscape pattern index of the basin changed slightly,the landscape fragmentation increased,the shape was complicated,and the heterogeneity increased; the correlation between landscape pattern index and water and sand was strong. If the land allocation of the basin is changed,the landscape pattern is bound to change accordingly. Therefore,the change trend of runoff and sediment in the basin can be achieved by indirectly changing land allocation.