Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest

doi:10.1016/j.soilbio.2021.108375

	Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest
	Jia, Yufu ; Zhai, Guoqing 1; Zhu, Shanshan 1; Liu, Xiaojuan ; Schmid, Bernhard 2; Wang, Zhiheng 3,4; Ma, Keping1 ; Feng, Xiaojuan1
	2021
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
卷号	161
摘要	Plant species richness (PSR) is known to affect soil organic carbon (SOC) storage. However, due to the complex origin and composition of SOC, mechanisms driving the PSR-SOC relationship are not yet fully revealed, hampering an accurate prediction of SOC dynamics under changing plant diversity. Here we investigate the effect of PSR on SOC accumulation along a natural PSR and stand age gradient in a subtropical forest with plot, litter and soil properties being considered. Biomarkers and soil fractionation are used to delineate plant and microbial components of SOC and their influences on the PSR-SOC relationship in the topsoil (0-10 cm) versus subsoil (30-40 cm). We show that PSR does positively affect SOC concentrations at both depths even after considering the effects of substrate, edaphic properties and stand age. However, the PSR-SOC relationship is driven by different pathways in the topsoil versus subsoil. In the topsoil, PSR exerts a strong additive effect on SOC accumulation after the positive influence of substrate, edaphic properties and stand age, mainly regulated by plant-derived components (represented by lignin phenols, light fraction and particulate organic matter), followed by microbial residues. By contrast, PSR has a positive effect on the accrual of microbial-derived components (represented by amino sugars and mineral-associated organic matter) but not plant residues likely via affecting dissolved organic matter (DOM) and nitrogen availability in the subsoil (i.e., DOM-microbial pathway). As a result, microbial-derived components dominate SOC variations in the subsoil, while plant-derived components play a more important role in the topsoil. These findings provide novel information on the mechanistic links between PSR and SOC accumulation at different depths and highlight the role of PSR on long-term carbon sink potentials of soils, which may aid in predicting soil carbon dynamics with plant diversity changes in Earth's system model.
关键词	Soil organic carbon Plant species richness Biomarker Soil fractionation Microbial necromass
学科领域	Soil Science
DOI	10.1016/j.soilbio.2021.108375
收录类别	SCI
语种	英语
WOS关键词	ORGANIC-CARBON ; COMMUNITY STRUCTURE ; SPECIES-DIVERSITY ; FRESH CARBON ; MURAMIC ACID ; AMINO-SUGARS ; MATTER ; DECOMPOSITION ; NITROGEN ; PRODUCTIVITY
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000694767200003
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
EISSN	1879-3428
资助机构	National Natural Science Foundation of China [42025303, 41807329, 31988102] ; ChineseAcademy of Sciences Interdisciplinary Innovation Team [JCTD-2018-06]
作者邮箱	xfeng@ibcas.ac.cn
引用统计	被引频次：41[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/2S10CLM1/26638
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, Beijing 100093, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Zurich, Dept Geog, Winterthurerstr 190, CH-8057 Zurich, Switzerland 4.Peking Univ, Coll Urban & Environm Sci, Inst Ecol, Minist Educ, Beijing 100871, Peoples R China 5.Peking Univ, Coll Urban & Environm Sci, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Jia, Yufu,Zhai, Guoqing,Zhu, Shanshan,et al. Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest[J]. SOIL BIOLOGY & BIOCHEMISTRY,2021,161.
APA	Jia, Yufu.,Zhai, Guoqing.,Zhu, Shanshan.,Liu, Xiaojuan.,Schmid, Bernhard.,...&Feng, Xiaojuan.(2021).Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest.SOIL BIOLOGY & BIOCHEMISTRY,161.
MLA	Jia, Yufu,et al."Plant and microbial pathways driving plant diversity effects on soil carbon accumulation in subtropical forest".SOIL BIOLOGY & BIOCHEMISTRY 161(2021).

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
S00380717_S003807172（5192KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文