[1]LU Ai-gang,SUO An-ning,ZHANG Lei.Simulation of Spatial Pattern of Soil Water Loss in a Watershed of the Loess Plateau Based SWAT Model[J].Research of Soil and Water Conservation,2011,18(02):57-61,65.
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Simulation of Spatial Pattern of Soil Water Loss in a Watershed of the Loess Plateau Based SWAT Model
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 02
Page number:
57-61,65
Column:
Public date:
2011-04-20
- Title:
- Simulation of Spatial Pattern of Soil Water Loss in a Watershed of the Loess Plateau Based SWAT Model
- Keywords:
- soil water loss; spatial pattern; SWAT model; land cover; Ruihe watershed
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- The spatial patterns of soil water loss were simulated in five different landscapes in Ruihe watershed on the Loess Plateau using distributed hydrological model SWAT. And results showed: (1) SWAT model can reasonably describe the soil water loss and its spatial pattern; (2) The background depth of the streams in most catchments of the upstream of Nahe River is 70 mm, accounting for 68.68% of the total catchments; and the depth of the streams of the downriver catchments is 60 mm, accounting for 68.68% of the total catchments, and most of the erosion modulus of the soil of the whole catchments is less than 8 t/hm2, with only a few between 8~20 t/hm2; (3) Both the runoff and sediment transport decreased with increase of land cover, companying by decrease of spatial heterogeneity and security of soil water loss;(4) The spatial heterogeneity of erosion modulus is more sensitive to land cover change than that of depth of runoff, and the order of the spatial heterogeneity of erosion modulus in 5 landscape types is farm-low density and ranks as grass landscape>bare-desert landscape>current landscape>forest-grass landscape>forest landscape.
- References:
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