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Microbial necromass in cropland soils: A global meta-analysis of management effects

文献类型：期刊论文

作者Zhou, Ranran; Liu, Yuan; Dungait, Jennifer A. J.; Kumar, Amit5; Wang, Jinsong4; Tiemann, Lisa K.; Zhang, Fusuo2; Kuzyakov, Yakov3; Tian, Jing2
刊名GLOBAL CHANGE BIOLOGY
出版日期2023-04-01
卷号29期号:7页码:1998-2014
ISSN号1365-2486
关键词amino sugars cropland management land use meta-analysis microbial necromass soil carbon sequestration soil organic matter
DOI10.1111/gcb.16613
文献子类Article
英文摘要Microbial necromass is a large and persistent component of soil organic carbon (SOC), especially under croplands. The effects of cropland management on microbial necromass accumulation and its contribution to SOC have been measured in individual studies but have not yet been summarized on the global scale. We conducted a meta-analysis of 481-paired measurements from cropland soils to examine the management effects on microbial necromass and identify the optimal conditions for its accumulation. Nitrogen fertilization increased total microbial necromass C by 12%, cover crops by 14%, no or reduced tillage (NT/RT) by 20%, manure by 21%, and straw amendment by 21%. Microbial necromass accumulation was independent of biochar addition. NT/RT and straw amendment increased fungal necromass and its contribution to SOC more than bacterial necromass. Manure increased bacterial necromass higher than fungal, leading to decreased ratio of fungal-to-bacterial necromass. Greater microbial necromass increases after straw amendments were common under semi-arid and in cool climates in soils with pH < 8, and were proportional to the amount of straw input. In contrast, NT/RT increased microbial necromass mainly under warm and humid climates. Manure application increased microbial necromass irrespective of soil properties and climate. Management effects were especially strong when applied during medium (3-10 years) to long (10+ years) periods to soils with larger initial SOC contents, but were absent in sandy soils. Close positive links between microbial biomass, necromass and SOC indicate the important role of stabilized microbial products for C accrual. Microbial necromass contribution to SOC increment (accumulation efficiency) under NT/RT, cover crops, manure and straw amendment ranged from 45% to 52%, which was 9%-16% larger than under N fertilization. In summary, long-term cropland management increases SOC by enhancing microbial necromass accumulation, and optimizing microbial necromass accumulation and its contribution to SOC sequestration requires site-specific management.
WOS关键词ORGANIC-MATTER ; NITROGEN-FERTILIZATION ; CARBON DYNAMICS ; RESIDUES ; FUNGAL ; STABILIZATION ; DECOMPOSITION ; ACCUMULATION ; PERSISTENCE ; EFFICIENCY
WOS研究方向Biodiversity & Conservation ; Environmental Sciences & Ecology
出版者WILEY
WOS记录号WOS:000934272300001
源URL[http://ir.igsnrr.ac.cn/handle/311030/190309]  
专题生态系统网络观测与模拟院重点实验室_外文论文
作者单位1.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing 100193, Peoples R China
2.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, Gottingen, Germany
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing, Peoples R China
4.United Arab Emirates Univ, Coll Sci, Dept Biol, Al Ain, U Arab Emirates
5.Dungait, Jennifer A. J.] Univ Exeter, Coll Life & Environm Sci, Dept Geog, Exeter, Devon, England
6.Dungait, Jennifer A. J.] SRUC Scotlands Rural Coll, Carbon Management Ctr, Edinburgh, Scotland
7.Liu, Yuan; Tiemann, Lisa K.] Michigan State Univ, Dept Plant Soil & Microbial Sci, E Lansing, MI USA
8.China Agr Univ, Natl Acad Agr Green Dev, Coll Resources & Environm Sci, Key Lab Plant Soil Interact,Minist Educ, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Ranran,Liu, Yuan,Dungait, Jennifer A. J.,et al. Microbial necromass in cropland soils: A global meta-analysis of management effects[J]. GLOBAL CHANGE BIOLOGY,2023,29(7):1998-2014.
APA Zhou, Ranran.,Liu, Yuan.,Dungait, Jennifer A. J..,Kumar, Amit.,Wang, Jinsong.,...&Tian, Jing.(2023).Microbial necromass in cropland soils: A global meta-analysis of management effects.GLOBAL CHANGE BIOLOGY,29(7),1998-2014.
MLA Zhou, Ranran,et al."Microbial necromass in cropland soils: A global meta-analysis of management effects".GLOBAL CHANGE BIOLOGY 29.7(2023):1998-2014.

入库方式： OAI收割

来源：地理科学与资源研究所

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