Impacts of land disturbance and restoration on runoff production and sediment yield in the Chinese Loess Plateau
AI Ning1,2,3,4, WEI Tianxing1, ZHU Qingke1∗, QIANG Fangfang2, MA Huan1, QIN Wei3
1 School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2 College of Life Science, Yan’an University, Yan’an 716000, China; 3 China Institute of Water Resources and Hydropower Research, Beijing 100048, China; 4 International Research and Training Center on Erosion and Sedimentation, Beijing 100048, China
Impacts of land disturbance and restoration on runoff production and sediment yield in the Chinese Loess Plateau
AI Ning1,2,3,4, WEI Tianxing1, ZHU Qingke1∗, QIANG Fangfang2, MA Huan1, QIN Wei3
1 School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2 College of Life Science, Yan’an University, Yan’an 716000, China; 3 China Institute of Water Resources and Hydropower Research, Beijing 100048, China; 4 International Research and Training Center on Erosion and Sedimentation, Beijing 100048, China
摘要 Land disturbance and land restoration are important factors influencing runoff production and sediment yield in the semi-arid loess regions of China. This study compared the runoff production and sediment yield during the early stage after land disturbance (ESLD) with those during restoring stage after land disturbance (RSLD). Grey relational analysis was used to analyse the importance of each one of the influencing factors (vegetation, rainfall, soil and topography) in affecting the runoff production and sediment yield. Our results showed that during ESLD, topography was the most critical factor controlling the runoff production, while soil was the most important factor controlling the sediment yield. During RSLD, vegetation was more important in affecting runoff production, while rainfall was more important in affecting sediment yield. In additional, this study demonstrated that both the runoff production and the sediment yield can be effectively reduced by restoring vegetation on severely-disturbed lands, thus providing an important theoretical basis for betterimplementations of the Grain for Green Program. Our results revealed that the vegetation types of Hippophae rhamnoides+Pinus tabulaeformis and H. rhamnoides are better plant selections for land restoration in this area, especially for relatively gentle slopes (i.e., less than 20 degrees).
Abstract：
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Land disturbance and land restoration are important factors influencing runoff production and sediment yield in the semi-arid loess regions of China. This study compared the runoff production and sediment yield during the early stage after land disturbance (ESLD) with those during restoring stage after land disturbance (RSLD). Grey relational analysis was used to analyse the importance of each one of the influencing factors (vegetation, rainfall, soil and topography) in affecting the runoff production and sediment yield. Our results showed that during ESLD, topography was the most critical factor controlling the runoff production, while soil was the most important factor controlling the sediment yield. During RSLD, vegetation was more important in affecting runoff production, while rainfall was more important in affecting sediment yield. In additional, this study demonstrated that both the runoff production and the sediment yield can be effectively reduced by restoring vegetation on severely-disturbed lands, thus providing an important theoretical basis for betterimplementations of the Grain for Green Program. Our results revealed that the vegetation types of Hippophae rhamnoides+Pinus tabulaeformis and H. rhamnoides are better plant selections for land restoration in this area, especially for relatively gentle slopes (i.e., less than 20 degrees).
The National Science and Technology Support Plan of China (2015BAD07B02).
通讯作者: ZHU Qingke
E-mail: zhuqingke2015@126.com
引用本文:
AI Ning,WEI Tianxing,ZHU Qingke等. Impacts of land disturbance and restoration on runoff production and sediment yield in the Chinese Loess Plateau[J]. Journal of Arid Land, 2017, 9(1): 76-86.
AI Ning,WEI Tianxing,ZHU Qingke et al. Impacts of land disturbance and restoration on runoff production and sediment yield in the Chinese Loess Plateau[J]. Journal of Arid Land, 2017, 9(1): 76-86.
2017, Vol. 9 
