ISWC OpenIR  > 水保所科研产出--SCI  > 2017--SCI
Zonal characteristics of sediment-bound organic carbon loss during water erosion: A case study of four typical loess soils in Shaanxi Province
Li, Zhongwu1,2; Nie, Xiaodong3,4; He, Jijun5; Chang, Xiaofeng1; Liu, Chun1,2; Liu, Lin1,2; Sun, Liying6; Li, ZW (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Li, ZW (reprint author), MWR, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationCATENA
ISSN0341-8162
description.correspondentemaillizw@hnu.edu.cn
Volume156Pages:393-400
AbstractThe soils of the Loess Plateau of China exhibit zonal characteristics, with declining clay percentages from the southern to northern regions. However, these differences have been largely ignored in studies of soil erosion and the related organic carbon (OC) loss. The goal of this study was to investigate the effect of gradual changes in soil texture on the loss and selective transport of soil and soil organic carbon (SOC) on the Loess Plateau of China. Four typical soils with decreasing clay contents (26.3%, 21.2%, 15.6% and 12.1%) in Shaanxi Province were selected and studied. Rainfall-simulated experiments were performed in 1 m (width) x 5 m (length) plots with a rainfall intensity of 120 mm h(-1) on three slope gradients (15, 20 and 25). The runoff and sediment yields, particle size distributions of the sediments, OC concentrations and enrichment ratios of OC in sediment (ERoc) during rainfall processes were measured and calculated. A comparison of the rainfall characteristics between rainfall events in different soils indicated that a decrease in the clay percentage increased the intensity of rill erosion. The runoff rates of different events decreased with the clay percentage, whereas no general pattern was observed in the sediment yield rate due to differences in the initial timing and intensity of rill erosion. Furthermore, the ERoc values in the sediments of all the events were between 0.64 and 1.44, with 90% of values between 0.80 and 1.20. Similarly, the effective particle size distribution of the sediments exhibited relatively constant values with rainfall duration. Non-significant correlations (P > 0.05) between ERoc and dispersed and non-dispersed sediment particles suggested that the transport of sediment and OC was non-selective. Moreover, significant linear correlations were observed between the amount of SOC loss and sediments in all the events. However, there was no significant difference in total SOC loss between the rainfall events, except for in events with a soil clay percentage of 15.6%. SOC losses in soils with 26.3% and 21.2% clay percentages were mainly due to the high SOC concentrations of the original soils, whereas those in other soils were due to the large amount of lost sediment. However, the variations in soil loss and SOC loss were not associated with changes in the clay content of the soil. These results suggest that zonal soils with decreasing clay contents do not influence the selective transport of OC, but soil textures affect the sediment and SOC loss through complicated mechanisms.
KeywordSoil Organic Carbon Chinese Loess Plateau Zonal Soils Simulated Rainfall Events
Subject AreaGeology ; Agriculture ; Water Resources
DOI10.1016/j.catena.2017.05.001
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000404305700039
PublisherELSEVIER SCIENCE BV
Funding Organization'Hundred-talent Project' of the Chinese Academy of Sciences [A315021407]; National Natural Science Foundation of China [41271294, 41471229] ; 'Hundred-talent Project' of the Chinese Academy of Sciences [A315021407]; National Natural Science Foundation of China [41271294, 41471229]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7939
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorLi, ZW (reprint author), Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China.; Li, ZW (reprint author), MWR, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Chinese Acad Sci, State Key Lab Soil Eros & Dryland Farming Loess P, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
2.MWR, Yangling 712100, Shaanxi, Peoples R China
3.Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China
4.Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha, Hunan, Peoples R China
5.Capital Normal Univ, Base State Lab Urban Environm Proc & Digital Mode, Key Lab Informat Acquisit & Applicat 3D, Minist Educ, Beijing 100048, Peoples R China
6.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Li, Zhongwu,Nie, Xiaodong,He, Jijun,et al. Zonal characteristics of sediment-bound organic carbon loss during water erosion: A case study of four typical loess soils in Shaanxi Province[J]. CATENA,2017,156:393-400.
APA Li, Zhongwu.,Nie, Xiaodong.,He, Jijun.,Chang, Xiaofeng.,Liu, Chun.,...&Li, ZW .(2017).Zonal characteristics of sediment-bound organic carbon loss during water erosion: A case study of four typical loess soils in Shaanxi Province.CATENA,156,393-400.
MLA Li, Zhongwu,et al."Zonal characteristics of sediment-bound organic carbon loss during water erosion: A case study of four typical loess soils in Shaanxi Province".CATENA 156(2017):393-400.
Files in This Item:
File Name/Size DocType Version Access License
1-s2.0-S034181621730(1575KB) 开放获取--Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Zhongwu]'s Articles
[Nie, Xiaodong]'s Articles
[He, Jijun]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Zhongwu]'s Articles
[Nie, Xiaodong]'s Articles
[He, Jijun]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Zhongwu]'s Articles
[Nie, Xiaodong]'s Articles
[He, Jijun]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

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