文献类型：期刊文献

英文题名：The effect of land uses and rainfall regimes on runoff and soil erosion in the semi-arid loess hilly area, China

作者：Wei, Wei[1,2] Chen, Liding[1] Fu, Bojie[1] Huang, Zhilin[3] Wu, Dongping[4] Gui, Lida[4]

第一作者：Wei, Wei

通信作者：Chen, LD[1]

机构：[1]Chinese Acad Sci, Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China;[2]Grad Univ, Chinese Acad Sci, Beijing, Peoples R China;[3]Chinese Acad Forestry, Beijing 100091, Peoples R China;[4]Dingxi Inst Soil & Water Conservat, Dingxi 743000, Gansu Prov, Peoples R China

年份：2007

卷号：335

期号：3-4

起止页码：247-258

外文期刊名：JOURNAL OF HYDROLOGY

收录：;EI(收录号：20070910442348);Scopus(收录号：2-s2.0-33847131069);WOS:【SCI-EXPANDED(收录号:WOS:000245300300003)】；

基金：The authors thank the Dingxi Institute of Soil and Water Conservation in Gansu province for providing experimental plots and pure-hearted field assistance. Sincere thanks are also expressed to Gansu Research Institute of Forestry. Ms. Victoria Wilhoite, at the University of South Florida School of Library and Information Science, is acknowledged for her valuable comments and English improvement. The authors express their appreciation to the reviewers by whose constructive remarks this paper has been improved. This research was supported by National Natural Science Foundation of China (40321101; 90502007) and the National Advanced Project of the Tenth Five-year Plan of China (2001BA606A-03).

语种：英文

外文关键词：runoff and soil erosion; rainfall regime; clustering; land use; loess hilly area

摘要：The main purpose of this article is to analyze runoff and soil loss in relation to land use and rainfall regimes in a loess hilly area of China. Based on 14 years of field measurements and K-means clustering, 131 rainfall events were classified into three rainfall regimes. Rainfall Regime II is an aggregation of rainfall events with such features as high intensity, short duration and high frequency. Regime I is the aggregation of rainfall events of medium intensity, medium duration and less frequent occurrence. Regime III is the aggregation of events of low intensity and long duration and infrequent occurrence. The following results were found. (1) Mean runoff coefficient and erosion modulus among the five land use types are: cropland > pasturetand > woodland > grassland > shrubland. (2) The sensitivity of runoff and erosion to the rainfall regimes differ. Rainfall Regime II causes the greatest proportion of runoff and soil loss, followed by Regime I and Regime III. (3) The processes of runoff and soil loss, however, are complicated and uncertain with the interaction of rainfall and Land use. This is mainly due to the different stages of vegetation succession. Based on these results, it was suggested that more attention should be paid to Rainfall Regime II since it had the most erosive effect. Shrubland is the first choice to control soil erosion when land use conversion is implemented, whereas pasturetand (alfalfa) is not. Large-scale plantation of alfalfa therefore, should be avoided. Grassland and woodland can be used as important supplements to shrubland. (c) 2006 Elsevier B.V. All rights reserved.