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

文献类型：期刊论文

作者Ma Tian2,3,4; Dai Guohua3,4; Zhu Shanshan3,4; Chen Dima4; Chen Litong1; Lü Xiaotao7; Wang Xiaobo7; Zhu Juntao6; Zhang Yangjian3,6; He Jin-Sheng2,5
刊名Plant and Soil
出版日期2019-11
卷号446页码:441–455
关键词Deep soils Distribution patterns Preservationmechanisms Soil organic carbon Chinese Mongolian grasslands
ISSN号0032-079X
DOI10.1007/s11104-019-04371-9
文献子类Article
英文摘要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 studyexamines 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 lipidswere 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.
WOS关键词Deep soils ; Distribution patterns ; Preservation mechanisms ; Soil organic carbon ; Chinese-Mongolian grasslands
WOS研究方向Agronomy ; Plant Sciences ; Soil Science
语种英语
WOS记录号WOS:000511594900028
源URL[http://ir.yic.ac.cn/handle/133337/40072]  
专题个人在本单位外知识产出
通讯作者Feng Xiaojuan
作者单位1.Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810008, China
2.State Key Laboratory of Grassland and Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
3.College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China
4.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
5.Department of Ecology, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
6.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
7.Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, 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,2019,446:441–455.
APA Ma Tian.,Dai Guohua.,Zhu Shanshan.,Chen Dima.,Chen Litong.,...&Feng Xiaojuan.(2019).Vertical variations in plant- and microbial-derived carbon components in grassland soils.Plant and Soil,446,441–455.
MLA Ma Tian,et al."Vertical variations in plant- and microbial-derived carbon components in grassland soils".Plant and Soil 446(2019):441–455.

入库方式： OAI收割

来源：烟台海岸带研究所

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