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Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s
Li, Qiquan1; Li, Aiwen1; Dai, Tianfei1,2; Fan, Zemeng3; Luo, Youlin1; Li, Shan1; Yuan, Dagang1; Zhao, Bin4; Tao, Qi1; Wang, Changquan1; Li, Bing1; Gao, Xuesong1; Li, Yiding1; Li, Huanxiu5; Wilson, John P.3,6,7
2020-04-27
Source PublicationGLOBAL CHANGE BIOLOGY
ISSN1354-1013
Pages13
Corresponding AuthorLi, Qiquan(liqq@lreis.ac.cn) ; Wang, Changquan(w.changquan@163.com)
AbstractAgricultural soils have tremendous potential to sequester soil organic carbon (SOC) and mitigate global climate change. However, agricultural land use has a profound impact on SOC dynamics, and few studies have explored how agricultural land use combined with soil conditions affect SOC changes throughout the soil profile. Based on a paired soil resampling campaign in the 1980s and 2010s, this study investigated the SOC changes of the soil profile caused by agricultural land use and the correlations with parent material and topography across the Chengdu Plain of China. The results showed that the SOC content increased by 3.78 g C/kg in the topsoil (0-20 cm), but decreased in the 20-40 cm and 40-60 cm soil layers by 0.90 and 1.26 g C/kg respectively. SOC increases in topsoil were observed for all types of agricultural land. Afforestation on former agricultural land also caused SOC decreases in the 20-60 cm soil layers, while SOC decreases only occurred in the 40-60 cm soil layer for agricultural land using a traditional crop rotation (i.e. traditional rice-wheat/rapeseed rotation) and with rice-vegetable rotations converted from the traditional rotations. For each agricultural land use, SOC decreases in deep soils only occurred in high relief areas and in soils formed from Q4 (Quaternary Holocene) grey-brown alluvium and Q4 grey alluvium that had a relatively low soil bulk density and clay content. The results indicated that SOC change caused by agricultural land use was depth dependent and that the effects of agricultural land use on soil profile SOC dynamics varied with soil characteristics and topography. Subsoil SOC decreases were more likely to occur in high relief areas and in soils with low soil bulk density and low clay content.
Keywordagricultural land use parent material soil organic carbon soil profiles topography
DOI10.1111/gcb.15110
WOS KeywordLAND-USE CHANGE ; FLOODED MULCHING CULTIVATION ; VERTICAL-DISTRIBUTION ; STRAW MULCH ; NITROGEN ; FRACTIONS ; STORAGE ; REGION ; FERTILIZATION ; PRODUCTIVITY
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41930647] ; National Natural Science Foundation of China[41421001] ; National Key Research and Development Program of China[2018YFD0800600] ; Science and Technology Plan of Sichuan Province, China[2019YJ0433]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China ; Science and Technology Plan of Sichuan Province, China
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Ecology ; Environmental Sciences
WOS IDWOS:000528594200001
PublisherWILEY
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/159803
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Qiquan; Wang, Changquan
Affiliation1.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Peoples R China
2.Chengdu Testing Ctr Soil & Fertilizer, Chengdu, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China
4.Sichuan Agr Univ, Coll Environm Sci, Chengdu, Peoples R China
5.Sichuan Agr Univ, Inst Pomol & Olericulture, Chengdu, Peoples R China
6.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
7.Univ Southern Calif, Spatial Sci Inst, Los Angeles, CA 90007 USA
Recommended Citation
GB/T 7714
Li, Qiquan,Li, Aiwen,Dai, Tianfei,et al. Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s[J]. GLOBAL CHANGE BIOLOGY,2020:13.
APA Li, Qiquan.,Li, Aiwen.,Dai, Tianfei.,Fan, Zemeng.,Luo, Youlin.,...&Wilson, John P..(2020).Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s.GLOBAL CHANGE BIOLOGY,13.
MLA Li, Qiquan,et al."Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s".GLOBAL CHANGE BIOLOGY (2020):13.
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