[1]朱万泽,马胜兰,等.土壤微生物碳利用效率研究进展[J].山地学报,2023,(1):1-18.[doi:10.16089/j.cnki.1008-2786.000726]
 ZHU Wanze,MA Shenglan,WANG Wenwu,et al.Research Advances in Soil Microbial Carbon Use Efficiency[J].Mountain Research,2023,(1):1-18.[doi:10.16089/j.cnki.1008-2786.000726]
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土壤微生物碳利用效率研究进展
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2023年第1期
页码:
1-18
栏目:
山地环境
出版日期:
2023-01-25

文章信息/Info

Title:
Research Advances in Soil Microbial Carbon Use Efficiency
文章编号:
1008-2786-(2023)1-001-18
作者:
朱万泽1马胜兰1 2王文武1 2李 霞1 2盛哲良1 2
(1.中国科学院、水利部成都山地灾害与环境研究所,成都 610299; 2. 中国科学院大学,北京 100049)
Author(s):
ZHU Wanze1 MA Shenglan1 2 WANG Wenwu1 2 LI Xia1 2 SHENG Zheliang1 2
(1. Institute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water Resources, Chengdu 610299, China; 2. University of Chinese Academy of scienecs, Beijing 100049, China)
关键词:
碳利用效率 土壤微生物 测定方法 动态变化 影响因子
Keywords:
carbon use efficiency soil microorganism dynamic variation measurement approach influencing factor
分类号:
S714.3
DOI:
10.16089/j.cnki.1008-2786.000726
文献标志码:
A
摘要:
土壤微生物碳利用效率(CUE)指微生物生长与碳吸收的比率,反映了受微生物群落影响的土壤有机碳代谢过程,是理解和模拟全球变化下土壤碳储存和碳循环的关键生理生态参数。量化土壤微生物CUE有助于理解土壤微生物生物量、土壤潜在碳储量、呼吸碳消耗之间的分异,以及土壤长期碳储存对全球变化的响应。土壤微生物CUE及其对环境变化的响应已受到土壤碳循环、全球变化生态学、陆地生态系统模型等研究的广泛关注。我国土壤微生物CUE研究是近几年才兴起的。本文分析了碳同位素法、氧同位素法、量热呼吸法、代谢通量分析法、化学计量法五种微生物CUE测定方法的优劣及适应性,阐释了土壤微生物CUE随生态系统、植被演替、季节的动态变化特征,剖析了微生物群落组成、底物质量和营养可利用性、温度、土壤pH值、土壤水分、土壤团聚体与质地、土层深度、人为干扰等生物和非生物因子对土壤微生物CUE的影响,并指出了当前土壤微生物CUE研究存在的问题,以及今后关注的重点:(1)加强森林生态系统土壤微生物CUE研究;(2)综合探讨环境和生物多要素交互影响下土壤微生物CUE的响应过程与机制,尤其是全球变化下根系分泌物对土壤微生物CUE及长期碳固持的影响;(3)从生态系统视角探讨土壤微生物CUE;(4)采用不同测定方法估算土壤微生物CUE;(5)探讨不同土层深度微生物CUE及其温度敏感性对长期碳储存影响。
Abstract:
Soil microbial carbon use efficiency(CUE)is a critical physiological and ecological parameter in measuring soil C cycle and stock under the global change scenarios. It is defined usually as the ratio between carbon(C)allocated to growth and C taken up by microorganisms. It expresses the processes of C retention, turnover, soil mineralization, and greenhouse gas emission. CUE serves as a key regulator of microbial biomass turnover and soil C sequestration. Understanding the variation of soil microbial CUE and its influence mechanism in the context of global environmental change is critical for a better understanding of the partitioning of C between microbial biomass, and soil stock potential, and respiration, and the response of long-term C stock in soil to global changes. Soil microbial CUE and its response to environmental changes have received increasing attention from studies on soil carbon cycle, global change ecology, and terrestrial ecosystem models. In this review, it evaluated the advantages and adaptability of five microbial CUE measurement methods including 13C(or 14C)and 18O isotope tracing approaches, calorespirometry, metabolic flux analysis, and stoichiometric modeling; it summarized the dynamic characteristics of soil microbial CUE with ecosystems, vegetation succession and different seasons; it analyzed the effects of the biological and abiotic factors including microbial community composition, substrate quality and nutrient availability, temperature, soil pH, soil moisture, soil aggregates and texture, soil layer depth, and anthropogenic disturbances on soil microbial CUE. According to the overview of CUE, the research prospect should be extended to:(1)Strengthen the soil microbial CUE research of forest ecosystems;(2)Explore the response process and mechanism of soil microbial CUE under the interaction of environmental and biological factors, especially for the effects of root exudates on soil microbial CUE and long-term carbon sequestration under the global changes;(3)Explore the dynamic of soil microbial CUE from microorganism's ecosystem perspective;(4)Cross-compare CUE estimates by integrating different methods to capture different aspects of microbial metabolism and improve our understanding of processes controlling CUE variability;(5)Analyze dynamics of microbial CUE at the different soil layers and the influence of the CUE temperature sensitivity on long-term carbon stock in soil.

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备注/Memo

备注/Memo:
收稿日期(Received date): 2022-09-20; 改回日期(Accepted date): 2023-02-10
基金项目(Foundation item): 四川省环境治理与生态保护重大科技专项(2018SZDZX0031); 中科院成都山地所“一三五”方向性项目(SDS-135-1707)[key Environmental Protection and Ecological Improvement Program of Sichuan Province(2018SZDZX0031); “One-Three-Five” Directional Project of Chengdu Institute of Mountain Hazards and Environment, CAS(SDS-135-1707)]
作者简介(Biography): 朱万泽(1965-),男,四川大竹人,博士,研究员,研究方向:森林生态学、经济林。[ZHU Wanze(1965-), male, born in Dazhu, Sichuan province, Ph. D., professor of research, research on forest ecology and cash forest] E-mail: wzzhu@imde.ac.cn

更新日期/Last Update: 2023-01-30