ISWC OpenIR  > 水保所科研产出--SCI  > 2016--SCI
Using rare earth elements tomonitor sediment sources from aminiature model of a small watershed in the Three Gorges area of China
Gang Liu1,2,3; Hai Xiao1; Puling Liu1; Qiong Zhang1; Jiaqiong Zhang1
2016-04-14
Source PublicationCatena
description.correspondentemailgliu@foxmail.com
Issue143Pages:114-122
Abstract
Understanding soil erosion processes at different landscape positions is important in order to predict and control
watershed soil losses. Rare earth elements (REEs) can be used to trace eroded soil sources but their efficacy may
be soil dependent. We constructed a miniature watershed model of a small watershed located in the Three
Gorges Area of China, and used oxides of eight REEs to trace the erosion of a purple soil. The miniaturewatershed
was divided into eight regions containing a different landform type as a potential sediment source. A different
REE was applied in each region. Redistributions of the REEs under three successive simulated rainfall events
with intensities of 1.0, 1.5 or 2.0 mm min−1 were examined. The percentage contribution from each region to
the total soil loss fromthewatershed fluctuated relative to landform type during the three rainstorms. Contributions
from the lower main gully decreased before stabilizing, while those from the upper main gully increased
before decreasing, and those from other sources all increased before stabilizing. Overall, the contribution of the
gully system, comprising main and branch gullies, was greater than that of the slopes. Contributions from the
gully system tended to decrease with increases in rainfall intensity and rainstorm duration while those from
the slopes increased. A comparison of the calculated and actual soil loss masses indicated that the accuracy of
the REE tracing method was less for the coarse textured purple soil than those previously found for fine textured
soils. The increased errors, likely due to the assumption used in the calculation that there is no particle size selectivity
during erosion, needs to be addressed. This pilot study provided a technical reference for the use of REEs in
monitoring sediment sources from a natural watershed, and a theoretical basis for soil conservation in the Three
Gorges Area.
KeywordPurple Soil Soil Loss Runoff Gully Erosion Landform
DOI10.1016/j.catena.2016.03.044
URL查看原文
Indexed BySCI
Language英语
WOS IDWOS:000376800800013
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7747
Collection水保所科研产出--SCI_2016--SCI
Corresponding AuthorGang Liu
Affiliation1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil andWater Conservation, Northwest A&F University, Yangling 712100, People's Republic of China
2.Institute of Soil and Water Conservation of Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, People's Republic of China
3.USDA-ARS National Sedimentation Laboratory, Oxford, MS 38655, USA
Recommended Citation
GB/T 7714
Gang Liu,Hai Xiao,Puling Liu,et al. Using rare earth elements tomonitor sediment sources from aminiature model of a small watershed in the Three Gorges area of China[J]. Catena,2016(143):114-122.
APA Gang Liu,Hai Xiao,Puling Liu,Qiong Zhang,&Jiaqiong Zhang.(2016).Using rare earth elements tomonitor sediment sources from aminiature model of a small watershed in the Three Gorges area of China.Catena(143),114-122.
MLA Gang Liu,et al."Using rare earth elements tomonitor sediment sources from aminiature model of a small watershed in the Three Gorges area of China".Catena .143(2016):114-122.
Files in This Item: Download All
File Name/Size DocType Version Access License
1-----s2.0-S03418162(1030KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gang Liu]'s Articles
[Hai Xiao]'s Articles
[Puling Liu]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gang Liu]'s Articles
[Hai Xiao]'s Articles
[Puling Liu]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gang Liu]'s Articles
[Hai Xiao]'s Articles
[Puling Liu]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 1-----s2.0-S0341816216301308-main.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

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