Total soil organic carbon increases but becomes more labile after afforestation in China's Loess Plateau

doi:10.1016/j.foreco.2020.117911

	Total soil organic carbon increases but becomes more labile after afforestation in China's Loess Plateau
	Zhang, Qingyin 2; Jia, Xiaoxu 1,3; Wei, Xiaorong 2; Shao, Mingan 1,2,3; Li, Tongchuan 2; Yu, Qiang 2,3,4
刊名	FOREST ECOLOGY AND MANAGEMENT
	2020-04-01
卷号	461 页码:7
关键词	Afforestation Cropland Labile soil organic carbon Loess Plateau
ISSN号	0378-1127
DOI	10.1016/j.foreco.2020.117911
通讯作者	Yu, Qiang(yuq@nwafu.edu.cn)
英文摘要	Afforestation of cropland is recommended as an effective approach to enhance soil organic carbon (SOC) sequestration and labile organic C fractions. However, the stabilization of SOC and its labile organic C fractions on the Loess Plateau is largely unknown. Our objective was to quantify total SOC concentration and labile organic C fractions in the 0-20 cm soil depth for four land use types on the Loess Plateau, including cropland and three afforested areas (composed of R. pseudoacacia forests, P. tabuliformis forests, and R. pseudoacacia + P. tabuliformis mixed forests). Total SOC concentration, particulate organic C (POC), dissolved organic C (DOC), microbial biomass C (MBC), and potassium permanganate-oxidizable C (KMnO4-C) were measured. Carbon management index (CMI) was also calculated. Afforestation showed a significant positive effect on total SOC and labile organic C fractions, compared with cropland. Afforestation with R. pseudoacacia, P. tabuliformis, and R. pseudoacacia + P. tabuliformis significantly increased POC by 57.4%, 22.2%, and 44.4% in the 0-5 cm soil layer; and similar increases were observed in the 5-10 cm and 10-20 cm layers. Similar trends to those observed for POC in response to afforestation were also seen for DOC, MBC, and KMnO4-C. Afforestation with R. pseudoacacia resulted in the highest total SOC concentrations and labile organic C fractions among the three afforestation treatments. These findings suggested that although afforestation can significantly promote total SOC accumulation, especially with R. pseudoacacia, SOC may become more labile following afforestation in the future.
资助项目	Fundamental Research Funds for the Central Universities[2452018088] ; National Natural Science Foundation of China[41530854] ; National Natural Science Foundation of China[41390461] ; International Partnership Program of the Chinese Academy of Sciences[161461KYSB20170013]
WOS关键词	LAND-USE CHANGE ; 2 PLANTATION FORESTS ; MANAGEMENT INDEX ; CLIMATE-CHANGE ; FRACTIONS ; SEQUESTRATION ; NITROGEN ; VEGETATION ; BIOMASS ; ACCUMULATION
WOS研究方向	Forestry
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000518873600026
资助机构	Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; International Partnership Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/133100]
专题	中国科学院地理科学与资源研究所
通讯作者	Yu, Qiang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 2.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 4.Univ Technol Sydney, Sch Life Sci, POB 123, Broadway, NSW 2007, Australia
推荐引用方式 GB/T 7714	Zhang, Qingyin,Jia, Xiaoxu,Wei, Xiaorong,et al. Total soil organic carbon increases but becomes more labile after afforestation in China's Loess Plateau[J]. FOREST ECOLOGY AND MANAGEMENT,2020,461:7.
APA	Zhang, Qingyin,Jia, Xiaoxu,Wei, Xiaorong,Shao, Mingan,Li, Tongchuan,&Yu, Qiang.(2020).Total soil organic carbon increases but becomes more labile after afforestation in China's Loess Plateau.FOREST ECOLOGY AND MANAGEMENT,461,7.
MLA	Zhang, Qingyin,et al."Total soil organic carbon increases but becomes more labile after afforestation in China's Loess Plateau".FOREST ECOLOGY AND MANAGEMENT 461(2020):7.