Effects of rainfall regime and its character indices on soil loss at loessial hillslope with ephemeral gully

doi:10.1007/s11629-016-3934-2

ISWC OpenIR > 水保所科研产出--SCI > 2017--SCI

	Effects of rainfall regime and its character indices on soil loss at loessial hillslope with ephemeral gully
	Han Yong 1,2; Zheng Fen-li 1,3; Xu Xi-meng 3; Zheng, FL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; Zheng, FL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
文章类型	Article
	2017
发表期刊	JOURNAL OF MOUNTAIN SCIENCE
ISSN	1672-6316
通讯作者邮箱	hanyong2006@163.com ; flzh@ms.iswc.ac.cn ; xuxm@nwsuaf.edu.cn
卷号	14 期号:3 页码:527-538
摘要	Understanding the relationship between hillslope soil loss with ephemeral gully and rainfall regime is important for soil loss prediction and erosion control. Based on 12-year field observation data, this paper quantified the rainfall regime impacts on soil loss at loessial hillslope with ephemeral gully. According to three rainfall parameters including precipitation (P), rainfall duration (t), and maximum 30-minute rainfall intensity (I (30)), 115 rainfall events were classified by using K-mean clustering method and Discriminant Analysis. The results showed that 115 rainfall events could be divided into three rainfall regimes. Rainfall Regime 1 (RR1) had large I (30) values with low precipitation and short duration, while the three rainfall parameters of Rainfall Regime 3 (RR3) were inversely different compared with those of RR1; for Rainfall Regime 2 (RR2), the precipitation, duration and I (30) values were all between those of RR1 and RR3. Compared with RR2 and RR3, RR1 was the dominant rainfall regime for causing soil loss at the loessial hillslope with ephemeral gully, especially for causing extreme soil loss events. PI (30) (Product of P and I (30)) was selected as the key index of rainfall characteristics to fit soil loss equations. Two sets of linear regression equations between soil loss and PI (30) with and without rainfall regime classification were fitted. Compared with the equation without rainfall regime classification, the cross validation results of the equations with rainfall regime classification was satisfactory. These results indicated that rainfall regime classification could not only depict rainfall characteristics precisely, but also improve soil loss equation prediction accuracy at loessial hillslope with ephemeral gully.
关键词	Rainfall Regime Soil Loss Rainfall Character Indices Loessial Hillslope Ephemeral Gully
学科领域	Environmental Sciences & Ecology
DOI	10.1007/s11629-016-3934-2
URL	查看原文
收录类别	SCI
出版地	BEIJING
语种	英语
WOS记录号	WOS:000396056200009
出版者	SCIENCE PRESS
项目资助者	National Natural Science Foundation of China [41271299]; MWR Laboratory of Soil and Water Loss Process and Control in the Loess Plateau of China [2017001] ; National Natural Science Foundation of China [41271299]; MWR Laboratory of Soil and Water Loss Process and Control in the Loess Plateau of China [2017001]
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/8026
专题	水保所科研产出--SCI_2017--SCI
通讯作者	Zheng, FL (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.; Zheng, FL (reprint author), Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Peoples R China
推荐引用方式 GB/T 7714	Han Yong,Zheng Fen-li,Xu Xi-meng,et al. Effects of rainfall regime and its character indices on soil loss at loessial hillslope with ephemeral gully[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(3):527-538.
APA	Han Yong,Zheng Fen-li,Xu Xi-meng,Zheng, FL ,&Zheng, FL .(2017).Effects of rainfall regime and its character indices on soil loss at loessial hillslope with ephemeral gully.JOURNAL OF MOUNTAIN SCIENCE,14(3),527-538.
MLA	Han Yong,et al."Effects of rainfall regime and its character indices on soil loss at loessial hillslope with ephemeral gully".JOURNAL OF MOUNTAIN SCIENCE 14.3(2017):527-538.