[1]ZHU Yue,JIANG Li-hua,BI Hua-xing,et al.Benefit Analysis of Soil and Water Conservation Measures in Controlling Soil and Water Loss in Small Watershed of the Loess Plateau Gully Region[J].Research of Soil and Water Conservation,2011,18(05):119-123.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
18
Number of periods:
2011 05
Page number:
119-123
Column:
Public date:
2011-10-20
- Title:
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Benefit Analysis of Soil and Water Conservation Measures in Controlling Soil and Water Loss in Small Watershed of the Loess Plateau Gully Region
- Author(s):
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ZHU Yue1, JIANG Li-hua2, BI Hua-xing1, WU Zhi-yang1, YUN Lei1, GAO Lu-bo1, LEI Na1, XU Hua-sen1, BAO Biao1
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1. College of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China;
2. Institute of Forestry Science and Technology, Yulin, Shaanxi 719000, China
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- Keywords:
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Loess Plateau gully region; small watershed; soil and water conservation; benefit analysis
- CLC:
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S157
- DOI:
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- Abstract:
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This paper chose Yangjiagou(manmade) and Dongzhuanggou small watershed (natural) which are two different kinds of small watersheds in gully area of Loess Plateau as research sites, by determining their indices, including soil bulk density, porosity, fertility, particle, runoff and sediment, contrasted effectiveness of soil and water conservation measures in different watersheds, theories supporting can be provided for soil and water conservation management. The results showed that, the averages of soil bulk density in 0-20 cm on upper slope, middle slope, and lower slope of Yangjiagou small watershed are equal to Dongzhuanggou’s 89%, 87%, 96%. In certain runoff, the average for many years of Yangjiagou’s sediment transport coefficient were 1045 t/km2, then Dongzhuanggou’s was 4333.1 t/km2, Yangjiagou’s sediment transport coefficient was about Dongzhuanggou’s 40%, the average of available phosphorus in soil of Yangjiagou small watershed was 2.05 mg/kg, Dongzhuanggou’s was 1.25 mg/kg, in the shallow soil (0-20 cm), available potassium of Yangjiagou small watershed was 399.6 mg/kg, Dongzhuanggou’s was just 303.2 mg/kg, equivalent to Yangjiagou’s 68%, other index of soil in Dongzhuanggou small watershed, such as total nitrogen, organic matter amounted to Yangjiagou’s 62%, 85%.