Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s

doi:10.1111/gcb.15110

	Depth-dependent soil organic carbon dynamics of croplands across the Chengdu Plain of China from the 1980s to the 2010s
	Li, Qiquan 2; Li, Aiwen 2; Dai, Tianfei 2,3; Fan, Zemeng 4; Luo, Youlin 2; Li, Shan 2; Yuan, Dagang 2; Zhao, Bin 1; Tao, Qi 2; Wang, Changquan 2
刊名	GLOBAL CHANGE BIOLOGY
	2020-04-27
页码	13
关键词	agricultural land use parent material soil organic carbon soil profiles topography
ISSN号	1354-1013
DOI	10.1111/gcb.15110
通讯作者	Li, Qiquan(liqq@lreis.ac.cn) ; Wang, Changquan(w.changquan@163.com)
英文摘要	Agricultural 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.
资助项目	National 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]
WOS关键词	LAND-USE CHANGE ; FLOODED MULCHING CULTIVATION ; VERTICAL-DISTRIBUTION ; STRAW MULCH ; NITROGEN ; FRACTIONS ; STORAGE ; REGION ; FERTILIZATION ; PRODUCTIVITY
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000528594200001
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science and Technology Plan of Sichuan Province, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/159802]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Qiquan; Wang, Changquan
作者单位	1.Sichuan Agr Univ, Coll Environm Sci, Chengdu, Peoples R China 2.Sichuan Agr Univ, Coll Resources, Chengdu 611130, Peoples R China 3.Chengdu Testing Ctr Soil & Fertilizer, Chengdu, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 6.Sichuan Agr Univ, Inst Pomol & Olericulture, Chengdu, Peoples R China 7.Univ Southern Calif, Spatial Sci Inst, Los Angeles, CA 90007 USA
推荐引用方式 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.