GSTDTAP  > 气候变化
DOI10.1111/gcb.14781
Quantitative assessment of microbial necromass contribution to soil organic matter
Liang, Chao1,2; Amelung, Wulf3; Lehmann, Johannes4,5; Kaestner, Matthias2
2019-09-18
发表期刊GLOBAL CHANGE BIOLOGY
ISSN1354-1013
EISSN1365-2486
出版年2019
卷号25期号:11页码:3578-3590
文章类型Article
语种英语
国家Peoples R China; Germany; USA
英文摘要

Soil carbon transformation and sequestration have received significant interest in recent years due to a growing need for quantitating its role in mitigating climate change. Even though our understanding of the nature of soil organic matter has recently been substantially revised, fundamental uncertainty remains about the quantitative importance of microbial necromass as part of persistent organic matter. Addressing this uncertainty has been hampered by the absence of quantitative assessments whether microbial matter makes up the majority of the persistent carbon in soil. Direct quantitation of microbial necromass in soil is very challenging because of an overlapping molecular signature with nonmicrobial organic carbon. Here, we use a comprehensive analysis of existing biomarker amino sugar data published between 1996 and 2018, combined with novel appropriation using an ecological systems approach, elemental carbon-nitrogen stoichiometry, and biomarker scaling, to demonstrate a suit of strategies for quantitating the contribution of microbe-derived carbon to the topsoil organic carbon reservoir in global temperate agricultural, grassland, and forest ecosystems. We show that microbial necromass can make up more than half of soil organic carbon. Hence, we suggest that next-generation field management requires promoting microbial biomass formation and necromass preservation to maintain healthy soils, ecosystems, and climate. Our analyses have important implications for improving current climate and carbon models, and helping develop management practices and policies.


英文关键词amino sugar ecosystem sustainability microbial anabolism microbial biomarker microbial residue soil organic carbon
领域气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000486781700001
WOS关键词AMINO-SUGARS ; BACTERIAL RESIDUES ; BIOMASS CARBON ; COMMUNITY STRUCTURE ; PLANT INPUTS ; FUNGAL ; NITROGEN ; FATE ; SEQUESTRATION ; STABILIZATION
WOS类目Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/187110
专题气候变化
资源环境科学
作者单位1.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China;
2.UFZ Helmholtz Ctr Environm Res, Dept Environm Biotechnol, Leipzig, Germany;
3.Univ Bonn, Inst Crop Sci & Resource Conservat Soil Sci & Soi, Bonn, Germany;
4.Cornell Univ, Sch Integrat Plant Sci Soil & Crop Sci, Ithaca, NY USA;
5.Tech Univ Munich, Inst Adv Studies, Garching, Germany
推荐引用方式
GB/T 7714
Liang, Chao,Amelung, Wulf,Lehmann, Johannes,et al. Quantitative assessment of microbial necromass contribution to soil organic matter[J]. GLOBAL CHANGE BIOLOGY,2019,25(11):3578-3590.
APA Liang, Chao,Amelung, Wulf,Lehmann, Johannes,&Kaestner, Matthias.(2019).Quantitative assessment of microbial necromass contribution to soil organic matter.GLOBAL CHANGE BIOLOGY,25(11),3578-3590.
MLA Liang, Chao,et al."Quantitative assessment of microbial necromass contribution to soil organic matter".GLOBAL CHANGE BIOLOGY 25.11(2019):3578-3590.
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