Depth-Dependent Controls Over Soil Organic Carbon Stock across Chinese Shrublands

doi:10.1007/s10021-022-00757-6

	Depth-Dependent Controls Over Soil Organic Carbon Stock across Chinese Shrublands
	Ge, Jielin ; Xu, Wenting ; Xiong, Gaoming ; Zhao, Changming ; Li, Jiaxiang 1; Liu, Qing 2,3; Tang, Zhiyao 4,5; Xie, Zongqiang6
	2023
发表期刊	ECOSYSTEMS
ISSN	1432-9840
卷号	26 期号:2 页码:277-289
摘要	Soil organic carbon (SOC) in shrublands is an important component of global carbon cycling. However, there is a dearth of large-scale systematic observations of SOC stocks at different soil depths, and it remains uncertain whether and how the relative importance of biotic and abiotic variables in regulating SOC stocks changes with soil depth. Here, we quantified large-scale patterns and controlling factors of SOC storage per area (SOCD, kg m(-2)) for both topsoils (0-30 cm) and subsoils (30-100 cm) by taking full advantage of a consistent stratified random sampling study of one-meter soil profiles across 1211 sites in Chinese shrublands. We found that subsoils stored about 53.30% of total SOCD, falling into the range of previously reported values for terrestrial ecosystems. SoilGrids250m model-derived assessments overestimated SOCD by 13.72 and 65.49% for topsoils and subsoils, respectively. The effects of climate means and seasonality on SOCD were equally strong in both topsoils and subsoils. The predominant effects of edaphic properties on SOCD were more robust in subsoils than in topsoils. Belowground biomass of shrublands was the only significant predictor of topsoil SOCD, but it did not predict subsoil SOCD accurately. These findings have refined our understanding of the pivotal role of shrublands in SOC storage and sequestration potential and could serve as an ecologically valuable baseline for large-scale improvement and validation of depth-dependent SOC dynamics for multilayer SOC modules in Earth Systems Models.
关键词	soil carbon storage subsoil layer climate-vegetation-soil relationships climatic control edaphic properties vegetation attributes
学科领域	Ecology
DOI	10.1007/s10021-022-00757-6
收录类别	SCI
语种	英语
WOS关键词	TERRESTRIAL ECOSYSTEMS ; ENVIRONMENTAL CONTROLS ; SEMIARID ECOSYSTEMS ; CLIMATE ; STORAGE ; PATTERNS ; POOLS ; DRIVERS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000771892600003
出版者	SPRINGER
文献子类	Article
出版地	NEW YORK
EISSN	1435-0629
资助机构	Strategic Priority Research Program-Climate Change: Carbon Budget and Related Issues of the Chinese Academy of Sciences [XDA05050302] ; National Natural Science Foundation of China [31600360] ; State Key Laboratory of Vegetation and Environmental Change of China [Y7206F1016]
作者邮箱	zytang@urban.pku.edu.cn ; xie@ibcas.ac.cn
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/29095
专题	植被与环境变化国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, 20 Nanxincun, Beijing 100093, Peoples R China 2.Cent South Univ Forestry & Technol, Coll Forest, Changsha 410004, Peoples R China 3.Chinese Acad Sci, Chengdu Inst Biol, CAS Key Lab Mt Ecol Restorat & Bioresource Utiliz, Chengdu 610041, Peoples R China 4.Chinese Acad Sci, Chengdu Inst Biol, Ecol Restorat Biodivers Conservat Key Lab Sichuan, Chengdu 610041, Peoples R China 5.Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Beijing 100871, Peoples R China 6.Peking Univ, Key Lab Earth Surface Proc, Beijing 100871, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Ge, Jielin,Xu, Wenting,Xiong, Gaoming,et al. Depth-Dependent Controls Over Soil Organic Carbon Stock across Chinese Shrublands[J]. ECOSYSTEMS,2023,26(2):277-289.
APA	Ge, Jielin.,Xu, Wenting.,Xiong, Gaoming.,Zhao, Changming.,Li, Jiaxiang.,...&Xie, Zongqiang.(2023).Depth-Dependent Controls Over Soil Organic Carbon Stock across Chinese Shrublands.ECOSYSTEMS,26(2),277-289.
MLA	Ge, Jielin,et al."Depth-Dependent Controls Over Soil Organic Carbon Stock across Chinese Shrublands".ECOSYSTEMS 26.2(2023):277-289.

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