Vertical variations in plant- and microbial-derived carbon components in grassland soils

doi:10.1007/s11104-019-04371-9

	Vertical variations in plant- and microbial-derived carbon components in grassland soils
	Ma, Tian 1; Dai, Guohua ; Zhu, Shanshan 1; Chen, Dima ; Chen, Litong 3; Lu, Xiao-Tao ; Wang, Xiaobo 4; Zhu, Juntao 5; Zhang, Yangjian 1,5; He, Jin-Sheng ; Bai, Yongfei; Han, Xingguo1 ; Feng, Xiaojuan1
	2020
发表期刊	PLANT AND SOIL
ISSN	0032-079X
卷号	446 期号:1-2 页码:441-455
摘要	Aims Owing to different soil environments and organic carbon sources, soil organic carbon (SOC) composition and preservation mechanisms may vary substantially in deep versus surface soils. This study examines vertical variation of various SOC components (including lignin phenols, cutin, suberin and microbial lipids) across the Chinese-Mongolian grasslands. Methods Lignin phenols and hydrolysable lipids were isolated by cupric oxide oxidation and alkaline hydrolysis, respectively. A comprehensive list of environmental variables was compiled to disentangle influencing factors for the variation of various components at four different depths. Results Lignin phenols, suberin and microbial lipids were most abundant in the surface soil (0-10 cm). Ratios of cutin to suberin and microbial lipids to lignin phenols (in the alpine grasslands) were higher in the bottom-most soil. Calcium (Ca) rather than iron (Fe) plays an important role in the preservation of cutin and microbial lipids in the bottom soil with a high Ca:Fe ratio and high pH. The incorporation efficiency of suberin was higher in deeper than surface soils and showed an increasing trend with depth in the alpine (but not temperate) grasslands. Conclusions Compared to surface soils, the incorporation of root-derived carbon into SOC is more efficient in deeper soils due to stronger mineral protection and weaker microbial decomposition. Root-derived carbon is more important for SOC accrual in the alpine than temperate grasslands, especially at depth. These findings reveal differential distribution patterns and preservation mechanisms for SOC components in the surface versus deep soils, providing new information to understand SOC stability at different depths.
关键词	Deep soils Distribution patterns Preservation mechanisms Soil organic carbon Chinese-Mongolian grasslands
学科领域	Agronomy ; Plant Sciences ; Soil Science
DOI	10.1007/s11104-019-04371-9
收录类别	SCI
语种	英语
WOS关键词	ORGANIC-MATTER STABILIZATION ; SUBSOIL HORIZONS ; MINERAL PHASES ; ROOT ; IRON ; FRACTIONATION ; DECOMPOSITION ; COMMUNITIES ; BIOMARKERS ; TURNOVER
WOS研究方向	Agriculture ; Plant Sciences
WOS记录号	WOS:000511594900028
出版者	SPRINGER
文献子类	Article
出版地	DORDRECHT
EISSN	1573-5036
作者邮箱	xfeng@ibcas.ac.cn
引用统计	被引频次：11[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/2S10CLM1/21927
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, Coll Resources & Environm, Beijing 100049, Peoples R China 3.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland & Agroecosyst, Lanzhou 730020, Peoples R China 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China 5.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 6.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 7.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Ma, Tian,Dai, Guohua,Zhu, Shanshan,et al. Vertical variations in plant- and microbial-derived carbon components in grassland soils[J]. PLANT AND SOIL,2020,446(1-2):441-455.
APA	Ma, Tian.,Dai, Guohua.,Zhu, Shanshan.,Chen, Dima.,Chen, Litong.,...&Feng, Xiaojuan.(2020).Vertical variations in plant- and microbial-derived carbon components in grassland soils.PLANT AND SOIL,446(1-2),441-455.
MLA	Ma, Tian,et al."Vertical variations in plant- and microbial-derived carbon components in grassland soils".PLANT AND SOIL 446.1-2(2020):441-455.

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