Journal of Resources and Ecology ›› 2018, Vol. 9 ›› Issue (5): 461-470.doi: 10.5814/j.issn.1674-764x.2018.05.002

• Review • Previous Articles     Next Articles

Runoff and Soil Erosion on Slope Cropland: A Review

WANG Shanshan1,4, SUN Baoyang5, LI Chaodong2, LI Zhanbin1,2,3, MA Bo1,2,*   

  1. 1. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;
    2. Institute of Soil and Water Conservation, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China;
    3. Key Laboratory of Northwest Water Resources and Environment Ecology of Ministry of Education, Xi’an University of Technology, Xi’an 710048, China;;
    4. University of Chinese Academy of Sciences, Beijing 100049, China;
    5. Soil and Water Conservation Department, Yangtze River Scientific Research Institute, Wuhan 430010, China
  • Received:2017-12-20 Revised:2018-02-05 Online:2018-09-30 Published:2018-10-09
  • Contact: * MA Bo, E-mail: mab@nwafu.edu.cn
  • Supported by:
    National Natural Science Foundation of China (41561144011, 41771311); State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau (Special Funds A314021403-C1).

Abstract: Soil erosion has become a serious environmental problem worldwide, and slope land is the main source of soil erosion. As a primary cover of slope land, crops have an important influence on the occurrence and development of runoff and soil erosion on slope land. This paper reviews the current understanding of runoff and soil erosion on slope cropland. Crops mainly impact splash detachment, slope runoff, and sediment yield. In this review paper, the effects of crop growth and rainfall on the splash detachment rate and the spatial distribution of splash detachment are summarized. Crop growth has a significant impact on runoff and sediment yield. Rainfall intensity and slope gradient can influence the level of erosive energy that causes soil erosion. Furthermore, other factors such as antecedent soil water content, soil properties, soil surface physical crust, and soil surface roughness can affect soil anti-erodibility. The varying effects of different crops and with different influence mechanisms on runoff and soil erosion, as well as changes in their ability to influence erosion under different external conditions should all remain focal points of future research. The effect of crop vegetation on runoff and soil erosion on slope land is a very important factor in understanding large-scale soil erosion systems, and in-depth study of this topic is highly significant for both theory and practice.

Key words: crop growth, impacts, runoff, slope land, soil erosion