Root derived C rather than root biomass contributes to the soil organic carbon sequestration in grassland soils with different fencing years

doi:10.1007/s11104-021-05144-z

	Root derived C rather than root biomass contributes to the soil organic carbon sequestration in grassland soils with different fencing years
	Yang, Xuan 2,3; Wang, Baorong 2,3; An, Shaoshan 1,3
刊名	PLANT AND SOIL
	2021-09-22
页码	12
关键词	Root derived C C allocation Livestock fencing Chinses Loess Plateau Belowground net primary production
ISSN号	0032-079X
DOI	10.1007/s11104-021-05144-z
通讯作者	An, Shaoshan(shan@ms.iswc.ac.cn)
英文摘要	Aims Belowground carbon (C) input is a key component of the global C cycle. However, how does fencing affect Belowground net primary production (BNPP) and the contribution of root derived C to belowground C input remains poorly studied. Methods In this study, the in-growth soil cores-C-13 method was used to quantify net root C input. Five different plant communities of different fencing years (1 year, 5 years, 10 years, 25 years, 30 years) in the Loess Plateau of China, characterized by herbs and shrubs were investigated. Results BNPP was increased with the increase of fencing years: 61.54 similar to 140.23 gC.m(-2).yr(-1). Root derived C in soil represented a considerable contribution to BNPP varying from 57 to 81 %, and the proportion of root derived C to BNPP was decreased with the fencing years. The contribution of root derived C to soil organic carbon (SOC) was 3 %similar to 5 % during one-year growth. Conclusions Our results underline the fact that fencing is an effective means to improve the BNPP and plant community. Root derived C rather than root biomass contributes to the SOC sequestration in grassland soils with different fencing years. Fencing increases the contribution of root derived C to SOC mainly by increasing root C content.
资助项目	National Natural Science Foundation of China[42077072] ; National Natural Science Foundation of China[41871280] ; National Natural Science Foundation of China[41671280]
WOS关键词	NET PRIMARY PRODUCTIVITY ; FOR-GREEN PROGRAM ; INORGANIC CARBON ; VEGETATION RESTORATION ; PLANT ; ALLOCATION ; DYNAMICS ; MATTER ; AFFORESTATION ; PATTERNS
WOS研究方向	Agriculture ; Plant Sciences
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000698058600001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165689]
专题	中国科学院地理科学与资源研究所
通讯作者	An, Shaoshan
作者单位	1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Xinong Rd 26, Yangling 712100, Shaanxi, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.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
推荐引用方式 GB/T 7714	Yang, Xuan,Wang, Baorong,An, Shaoshan. Root derived C rather than root biomass contributes to the soil organic carbon sequestration in grassland soils with different fencing years[J]. PLANT AND SOIL,2021:12.
APA	Yang, Xuan,Wang, Baorong,&An, Shaoshan.(2021).Root derived C rather than root biomass contributes to the soil organic carbon sequestration in grassland soils with different fencing years.PLANT AND SOIL,12.
MLA	Yang, Xuan,et al."Root derived C rather than root biomass contributes to the soil organic carbon sequestration in grassland soils with different fencing years".PLANT AND SOIL (2021):12.