Distribution and Preservation of Root‐ and Shoot‐Derived Carbon Components in Soils Across the Chinese‐ Mongolian Grasslands
文献类型：期刊论文
| 作者 | Ma Tian7,8 ; Dai Guohua8; Zhu Shanshan7,8; Chen Dima8; Chen Litong6; Lü Xiaotao5; Wang Xiaobo5; Zhu Juntao4; Zhang Yangjian4,7; Ma Wenhong3
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| 刊名 | Journal of Geophysical Research: Biogeosciences
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| 出版日期 | 2019-02 |
| 卷号 | 124期号:2页码:420-431 |
| 关键词 | alpine grasslands temperate grasslands cutin suberin root carbon incorporation efficiency |
| ISSN号 | 2169-8953 |
| DOI | 10.1029/2018JG004915 |
| 文献子类 | Article |
| 英文摘要 | The relative contribution of roots versus shoots to soil organic carbon (SOC) is a long‐debated topic related to soil carbon formation and dynamics. However, the variation of root‐ and shoot‐derived carbon in natural soils remains poorly constrained due to limited tools to separate them. Here we overcome the difficulty by analyzing biomarkers for root (suberin) and shoot (cutin) in grassland soils spanning >7,000 km on the Qinghai‐Tibetan and Mongolian Plateaus. Coupled with a comprehensive list of climatic, edaphic, and vegetation variables, we assess their inputs, distribution, and preservation patterns. We find that while suberin was a root‐specific tracer, cutin biomarkers that occurred only in trace amount in roots also had a minor but nonnegligible contribution from belowground sources due to the massive root mass in the alpine grasslands. Both components had higher SOC‐normalized concentrations in the alpine than temperate grasslands, along with a higher preservation percentage against net primary productivity and a lower degradation parameter, suggesting a better preservation of these plant‐derived lipid components in the alpine region. Moreover, while cutin and suberin abundances were affected by plant inputs and other SOC constituents, the root mass normalized incorporation efficiency of suberin was only positively correlated to SOC in both regions with a steeper slope in the alpine grasslands and also negatively correlated to root mass in the alpine soils. These results imply that root carbon incorporation is sensitive to environmental variations in the cold region, suggesting potentially more dynamic alterations to root carbon sequestration with environmental changes. |
| WOS关键词 | ORGANIC-MATTER ; SUBERIN BIOMARKERS ; CUTIN ; DYNAMICS ; LIPIDS ; PLANT ; DECOMPOSITION ; SEQUESTRATION ; CONTRIBUTE ; ABUNDANCE |
| WOS记录号 | WOS:000460859100015 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40076]  |
| 专题 | 个人在本单位外知识产出 |
| 通讯作者 | Feng Xiaojuan |
| 作者单位 | 1.Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing, China 2.State Key Laboratory of Grassland and Agro‐ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China 3.School of Ecology and Environment, Inner Mongolia University, Hohhot, China 4.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China 5.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China 6.Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China 7.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing, China 8.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China |
| 推荐引用方式 GB/T 7714 | Ma Tian,Dai Guohua,Zhu Shanshan,et al. Distribution and Preservation of Root‐ and Shoot‐Derived Carbon Components in Soils Across the Chinese‐ Mongolian Grasslands[J]. Journal of Geophysical Research: Biogeosciences,2019,124(2):420-431. |
| APA | Ma Tian.,Dai Guohua.,Zhu Shanshan.,Chen Dima.,Chen Litong.,...&Feng Xiaojuan.(2019).Distribution and Preservation of Root‐ and Shoot‐Derived Carbon Components in Soils Across the Chinese‐ Mongolian Grasslands.Journal of Geophysical Research: Biogeosciences,124(2),420-431. |
| MLA | Ma Tian,et al."Distribution and Preservation of Root‐ and Shoot‐Derived Carbon Components in Soils Across the Chinese‐ Mongolian Grasslands".Journal of Geophysical Research: Biogeosciences 124.2(2019):420-431. |
入库方式： OAI收割
来源：烟台海岸带研究所
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