RCEES OpenIR  > 城市与区域生态国家重点实验室
Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China
Wei, Wei; Chen, Liding; Fu, Bojie; Chen, Jin
2010-04-15
Source PublicationCATENA
Volume81Issue:1Pages:24-31
AbstractDue to rainfall variation and poor land cover, water erosion in the loess hilly area is severe and experiences high temporal fluctuations, which increase the difficulties of erosion quantification, prediction and control. In this study, 15 runoff plots were implemented in Dingxi, a typical loess hilly area of Gansu Province since 1986. Three typical years representing WY (wet year), NY (normal year) and DY (drought year) were firstly filtered based on the consecutive rainfall-erosion data and an aridity index. Then, water erosion dynamics involving five land uses (cropland, alfalfa, scrubland, woodland and grassland) in the three typical years were analyzed. The following results were found. Firstly, the most severe annual erosion rates did not appear in WY, but in DY. Moreover, the rates in DY were far higher than those in NY and WY. Secondly, although total rain depth and number of events were in the order of WY>NY>DY, mean maximal intensity of erosive rainfall however, was in the order of DY>NY>WY. This finding is important for erosion control. Namely, we cannot judge water erosion degree just from annual rainfall. More attention should be paid to the specific rainfall variables and distributions. Thirdly, different land uses played an important role with sea buckthorn reducing water erosion in contrast to spring wheat cultivated on steep slopes. Lastly, regardless of different drought-level years, only a few number of events with high intensities were responsible for the majority of annual soil and water loss. (C) 2010 Elsevier B.V. All rights reserved.
Department城市与区域生态国家重点实验室
KeywordRainfall Variation Land Use Water Erosion Loess Plateau Drought-level Year
Citation statistics
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/21025
Collection城市与区域生态国家重点实验室
Recommended Citation
GB/T 7714
Wei, Wei,Chen, Liding,Fu, Bojie,et al. Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China[J]. CATENA,2010,81(1):24-31.
APA Wei, Wei,Chen, Liding,Fu, Bojie,&Chen, Jin.(2010).Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China.CATENA,81(1),24-31.
MLA Wei, Wei,et al."Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China".CATENA 81.1(2010):24-31.
Files in This Item: Download All
File Name/Size DocType Version Access License
Water erosion respon(615KB) 开放获取CC BY-NC-NDView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wei, Wei]'s Articles
[Chen, Liding]'s Articles
[Fu, Bojie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wei, Wei]'s Articles
[Chen, Liding]'s Articles
[Fu, Bojie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wei, Wei]'s Articles
[Chen, Liding]'s Articles
[Fu, Bojie]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Water erosion response to rainfall and land use in different drought-level years in a loess hilly area of China.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.