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Response of sedimentary organic matter source to rainfall events using stable carbon and nitrogen isotopes in a typical loess hilly-gully catchment of China
Liu, Chun1,2; Li, Zhongwu1,2; Dong, Yuting1,2; Chang, Xiaofeng1,2; Nie, Xiaodong3,4; Liu, Lin1,2; Xiao, Haibing1,2; Wang, Danyang3,4; Peng, Hao3,4; Li, ZW; Dong, YT (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Dong, YT (reprint author), MWR, Yangling 712100, Shaanxi, Peoples R China.
SubtypeArticle
2017
Source PublicationJOURNAL OF HYDROLOGY
ISSN0022-1694
description.correspondentemaillizw@hnu.edu.cn ; hwtsdyt@l63.com
Volume552Pages:376-386
AbstractUnderstanding the information on sedimentary organic matter (SOM) source is of great importance for better understanding biogeochemical cycling and terrestrial carbon sequestration on the Earth's surface. Such information, especially during field rainfall process, however, is unavailable or difficult to assemble. In order to further study the dynamic variation of sedimentary organic matter source during rainfall process, suspended sediment were sampled manually at the outlet of two paired typical hilly-gully watersheds of Loess Plateau in China [Qiaozi East watershed (QEW) and Qiaozi West watershed (QWW)], and source materials included subsoil (i.e., soils from channel bank and gully bank) and topsoil (i.e., surface soils from different slope positions in land uses), along with C-3 and C-4 plants. In this study reported, natural stable isotopes (C-13 and N-15) and elemental compositions (TOC and TN), combined with a isotope mixing model (stable isotope analysis in R, SIAR) were successfully used to assemble this information. The results showed that the response of source contributions to SOM displayed difference significantly during different rainfall processes, showing fluctuation with flow. Subsoil was the main source of SOM pool for two similar small watersheds (accounting for 38.50% for QWW and 35.63% for QEW). Minor contribution was sourced from the C-3 and C-4 plants (< 25%), but only 10% for the C-4 plants, indicating that the C-3 plants dominated the input of organic matter in superficial soils of this study region. The source of sedimentary organic matter transported by erosion showed different contribution proportions from potential sources in two similar small watersheds with different management practices, indicating that management practice could decrease the soil organic matter loss by reducing the sediment transportation and flow during rainfall process in the Loess Plateau of China. (C) 2017 Elsevier B.V. All rights reserved.
KeywordSource Tracing Isotopes Sedimentary Organic Matter Rainfall Soil Erosion Loess Plateau
Subject AreaEngineering ; Geology ; Water Resources
DOI10.1016/j.jhydrol.2017.07.006
URL查看原文
Indexed BySCI
Publication PlaceAMSTERDAM
Language英语
WOS IDWOS:000411541800029
PublisherELSEVIER SCIENCE BV
Funding OrganizationHundred-talent Project of the Chinese Academy of Sciences; National Natural Science Foundation of China [41271294] ; Hundred-talent Project of the Chinese Academy of Sciences; National Natural Science Foundation of China [41271294]
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Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/7925
Collection水保所科研产出--SCI_2017--SCI
Corresponding AuthorLi, ZW; Dong, YT (reprint author), Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China.; Dong, YT (reprint author), MWR, Yangling 712100, Shaanxi, Peoples R China.
Affiliation1.Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, 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, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China
5.Yellow River Conservat Commiss, Tianshui Soil & Water Conservat Stn, Tianshui 741000, Gansu, Peoples R China
Recommended Citation
GB/T 7714
Liu, Chun,Li, Zhongwu,Dong, Yuting,et al. Response of sedimentary organic matter source to rainfall events using stable carbon and nitrogen isotopes in a typical loess hilly-gully catchment of China[J]. JOURNAL OF HYDROLOGY,2017,552:376-386.
APA Liu, Chun.,Li, Zhongwu.,Dong, Yuting.,Chang, Xiaofeng.,Nie, Xiaodong.,...&Dong, YT .(2017).Response of sedimentary organic matter source to rainfall events using stable carbon and nitrogen isotopes in a typical loess hilly-gully catchment of China.JOURNAL OF HYDROLOGY,552,376-386.
MLA Liu, Chun,et al."Response of sedimentary organic matter source to rainfall events using stable carbon and nitrogen isotopes in a typical loess hilly-gully catchment of China".JOURNAL OF HYDROLOGY 552(2017):376-386.
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