[1]BAI Xianfa,GAO Jianen,JIA Lizhi,et al.Preliminary Study of Effects of Different Terraces on Erosion Control in Loess Plateau[J].Research of Soil and Water Conservation,2015,22(03):10-15.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 03
Page number:
10-15
Column:
Public date:
2015-06-28
- Title:
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Preliminary Study of Effects of Different Terraces on Erosion Control in Loess Plateau
- Author(s):
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BAI Xianfa1,3, GAO Jian’en1,2,3,4, JIA Lizhi1,3, ZHANG Mengjie2, MA Runnian5, ZHANG Yingying5
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1. Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China;
2. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. University of Chinese Academy of Sciences, Beijing 100049, China;
4. College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, Shaanxi 712100, China
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- Keywords:
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water and sediment regulation measures; soil erosion; terraces; rainstorm runoff; Loess Plateau
- CLC:
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S157.1
- DOI:
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- Abstract:
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In order to understand the serious damage of soil and water conservation projects caused by heavy rain in Loess Plateau in 2013, it is urgent to study the effects of different water and sediment regulation measures on soil erosion control. Based on the field monitoring and collected rainfall data, this paper chose three kinds of terraces with different water and sediment regulation measures and compared their ability to resist the heavy rain disaster. The results showed that terraces with water and sediment regulation measures presented the better erosion controlling effect than those without water and sediment regulation measures significantly. Cellar-apple-terraces showed the lightest erosion intensity, with the degrees of all levels of terraces being middle erosion and average soil erosion modulus being 2 177 t/km2. Greenhouses-terrace showed middle erosion intensity and its average soil erosion modulus was 18 269 t/km2 due to drainage channels constructed on the base of greenhouses, whereas the high efficiency of rainwater collection on the surface of greenhouse made the average soil erosion modulus of all levels of terraces reach to 18 269 t/km2. The erosion of field-terrace was the most serious, and the average soil erosion modulus of the field-terrace was 23 921 t/km2. There was an increasing tendency of soil erosion from the up to the down of field-terrace, and the erosion rate of the lowermost three levels of field-terrace accounted for 85.02% of total erosion rate. There was the increasing requirement of constructing water and sediment regulation measures based on practical situation to develop high efficient agriculture, control the spatiotemporal distribution of water and sediment, and ensure agricultural production.