Plant productivity and microbial composition drive soil carbon and nitrogen sequestrations following cropland abandonment

doi:10.1016/j.scitotenv.2020.140802

IEECAS OpenIR > 生态环境研究室

	Plant productivity and microbial composition drive soil carbon and nitrogen sequestrations following cropland abandonment
	Li, Jiwei 1,2; Li, Miaoyu 1,2; Dong, Lingbo 3; Wang, Kaibo 4; Liu, Yulin 3; Hai, Xuying 3; Pan, Yingjie 1,2; Lv, Wenwen 3; Wang, Xiaozhen 3; Shangguan, Zhouping 1,2,3; Deng, Lei 1,2,3
通讯作者	Deng, Lei(leideng@ms.iswc.ac.cn)
	2020-11-20
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
卷号	744 页码:10
摘要	Understanding the variations in soil organic carbon (SOC) and total nitrogen (STN) stocks in the different ages of abandoned cropland ecosystems of different ages is essential for land use decisions to maximize C sinks or improve ecosystem services. However, knowledge of the dynamics of SOC and STN stocks and their controlling factors after cropland abandonment is limited. Thus, this study investigated the changes in the SOC and STN stocks of loessal soil (Calcaric Regosols) with a chronosequence of 3, 8, 13, 18, 23 and 30 years following cropland abandonment on the Loess Plateau. As a whole, we examined 42 field plots and implemented multivariable linear regression analysis (MLRA) and structural equation modeling (SEM) using 22 influencing variables related to plant, soil and microbial properties to quantify the controls of SOC and SIN stocks. The results revealed that SOC and STN stocks significantly increased after cropland abandonment for 30 years, and there were minor decreases in C and N sequestrations in the early restoration stage (<18 years). The SOC and STN changes had significant positive correlations, in which that exhibited STN stocks shifted concurrently with the rate of relative SOC stock changes. The MLRA models demonstrated that the SOC stocks were primarily controlled by aboveground biomass, STN, fungi, and the ratio of fungi to bacteria, while STN stocks were mainly driven by root biomass. above-ground biomass, STN, fungi and the ratio of fungi to bacteria after cropland abandonment. The SEM models further demonstrated that plant productivity not only directly determined the variations in SOC and STN stocks but also changed the microbial community following post-cropland restoration. These results suggest that long-term (>18 years) cropland abandonment can be a successful approach for reinstating SOC and STN stocks, while plants and microbes together mediate microbial C and N stocks during vegetation succession in a semiarid region. (C) 2020 Elsevier B.V. All rights reserved.
关键词	Carbon sequestration Cropland abandonment Land use change Nitrogen sequestration Plant productivity Soil microbe
DOI	10.1016/j.scitotenv.2020.140802
关键词[WOS]	LAND-USE CHANGES ; ORGANIC-CARBON ; LOESS PLATEAU ; PRECIPITATION GRADIENT ; VEGETATION RESTORATION ; EXTRACTION METHOD ; KARST AREA ; AGRICULTURAL ABANDONMENT ; CHINA GRAIN ; STOCKS
收录类别	SCI ; SCI
语种	英语
资助项目	National Natural Science Foundation of China[41877538] ; National Natural Science Foundation of China[41671511] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23070201] ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province ; National Forestry and Grassland Administration in China
WOS研究方向	Environmental Sciences & Ecology
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Funding of Special Support Plan of Young Talents Project of Shaanxi Province ; National Forestry and Grassland Administration in China
WOS类目	Environmental Sciences
WOS记录号	WOS:000573547400008
出版者	ELSEVIER
引用统计	被引频次：29[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15392
专题	生态环境研究室
通讯作者	Deng, Lei
作者单位	1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Li, Jiwei,Li, Miaoyu,Dong, Lingbo,et al. Plant productivity and microbial composition drive soil carbon and nitrogen sequestrations following cropland abandonment[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,744:10.
APA	Li, Jiwei.,Li, Miaoyu.,Dong, Lingbo.,Wang, Kaibo.,Liu, Yulin.,...&Deng, Lei.(2020).Plant productivity and microbial composition drive soil carbon and nitrogen sequestrations following cropland abandonment.SCIENCE OF THE TOTAL ENVIRONMENT,744,10.
MLA	Li, Jiwei,et al."Plant productivity and microbial composition drive soil carbon and nitrogen sequestrations following cropland abandonment".SCIENCE OF THE TOTAL ENVIRONMENT 744(2020):10.