Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes

doi:10.1002/2017JG004233

IMR OpenIR

	Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes
	Dai, Guohua 1; Ma, Tian 1,2; Zhu, Shanshan 1,2; Liu, Zongguang 1; Chen, Dima 1; Bai, Yongfei 1,2; Chen, Litong 3; He, Jin-Sheng 3,4; Zhu, Juntao 5; Zhang, Yangjian 2,5; Lue, Xiaotao 6; Wang, Xiaobo 6; Han, Xingguo 1,2; Feng, Xiaojuan 1,2
通讯作者	Feng, Xiaojuan(xfeng@ibcas.ac.cn)
	2018
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN	2169-8953
卷号	123 期号:1 页码:239-255
摘要	Chinese grasslands hold a third of the national soil organic carbon (OC) stocks but remain poorly investigated in terms of soil molecular components and their distribution patterns. Such information is important for understanding mechanisms governing grassland soil OC dynamics and its response to global changes. Here employing solvent-extractable compounds as a group of widely used biomarkers, we present a large-scale study on the distribution of different soil OC components (including plant- and microbial-derived carbohydrates and aliphatic and cyclic lipids) in the surface soils of Chinese grasslands, spanning from temperate grasslands in the arid/semiarid regions to alpine grasslands on the Qinghai-Tibetan Plateau. We show that alpine grassland soils are more enriched with carbohydrates and plant-derived compounds relative to the temperate counterparts due to temperature-inhibited decomposition. While plant belowground biomass plays a key role in explaining the spatial variation of compounds in the alpine grasslands, climatic variables do in the temperate region. In particular, aliphatic lipids accumulate with increasing mean annual temperature in the temperate grasslands due to a preferential decay of labile soil OC, whereas they decrease in the alpine grasslands owing to dilution by an enhanced plant input of nonlipid components. Collectively, these results demonstrate different mechanisms governing the distribution of solvent-extractable compounds in grassland soils, with climate-mediated decomposition processes dominating in the temperate grasslands and plant inputs being more important in the alpine region. In the context of climate change, alterations to soil OC input and decomposition processes may have varied impacts on soil carbon cycling in these two regions.
关键词	soil organic carbon biomarker Qinghai-Tibetan Plateau Inner Mongolia aliphatic lipid carbohydrate
资助者	Chinese National Key Development Program for Basic Research ; National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; Thousand Young Talents Program of China
DOI	10.1002/2017JG004233
收录类别	SCI
语种	英语
资助项目	Chinese National Key Development Program for Basic Research[2015CB954201] ; Chinese National Key Development Program for Basic Research[2016YFC0500701] ; National Natural Science Foundation of China[31370491] ; National Natural Science Foundation of China[41422304] ; National Natural Science Foundation of China[41503073] ; International Partnership Program of Chinese Academy of Sciences[151111KYSB20160014] ; Thousand Young Talents Program of China
WOS研究方向	Environmental Sciences & Ecology ; Geology
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary
WOS记录号	WOS:000425517800018
出版者	AMER GEOPHYSICAL UNION
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/127384
专题	中国科学院金属研究所
通讯作者	Feng, Xiaojuan
作者单位	1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China 3.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Qinghai, Peoples R China 4.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Dai, Guohua,Ma, Tian,Zhu, Shanshan,et al. Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2018,123(1):239-255.
APA	Dai, Guohua.,Ma, Tian.,Zhu, Shanshan.,Liu, Zongguang.,Chen, Dima.,...&Feng, Xiaojuan.(2018).Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,123(1),239-255.
MLA	Dai, Guohua,et al."Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 123.1(2018):239-255.