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

doi:10.1002/2017JG004233

	Large-Scale Distribution of Molecular Components in Chinese Grassland Soils: The Influence of Input and Decomposition Processes
	Dai, Guohua ; Ma, Tian 1; Zhu, Shanshan 1; Liu, Zongguang ; Chen, Dima ; Bai, Yongfei1 ; Chen, Litong ; He, Jin-Sheng ; Zhu, Juntao 4; Zhang, Yangjian 1,4; Lue, Xiaotao 5; Wang, Xiaobo 5; Han, Xingguo1 ; Feng, Xiaojuan1
	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
学科领域	Environmental Sciences ; Geosciences, Multidisciplinary
DOI	10.1002/2017JG004233
收录类别	SCI
语种	英语
WOS关键词	PARTICLE-SIZE FRACTIONS ; TOTAL ORGANIC-CARBON ; FATTY-ACIDS ; SEASONAL-VARIATIONS ; EXTRACTABLE LIPIDS ; INORGANIC CARBON ; ALPINE GRASSLAND ; LAND-USE ; MATTER ; FOREST
WOS记录号	WOS:000425517800018
出版者	AMER GEOPHYSICAL UNION
文献子类	Article
出版地	WASHINGTON
EISSN	2169-8961
资助机构	Chinese National Key Development Program for Basic Research [2015CB954201, 2016YFC0500701] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31370491, 41422304, 41503073] ; International Partnership Program of Chinese Academy of Sciences [151111KYSB20160014] ; Thousand Young Talents Program of ChinaChinese Academy of Sciences
作者邮箱	xfeng@ibcas.ac.cn
引用统计	被引频次：27[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/2S10CLM1/20605
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, 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.

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
Applet_2022-1-10_164（1217KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览请求全文