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亚热带资源与环境学报 >

2026 , Vol. 21 >Issue 1: 55 - 62

DOI: https://doi.org/10.19687/j.cnki.1673-7105.2026.01.006

碳循环与生态系统固碳

增温对杉木成熟林土壤微生物残体碳、氮积累的影响及机制

  • 邱萁昕 ,
  • 黄杨杨 ,
  • 查满丽 ,
  • 钟羡芳 ,
  • 郭剑芬
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  • 福建师范大学a.地理研究所, b.地理科学学院、碳中和未来技术学院, c.福建省植物生理生态重点实验室, 福州 350117
*郭剑芬(1977— ), 女, 福建龙岩人, 教授, 博士生导师, 研究方向为森林碳循环与全球变化, jfguo@fjnu.edu.cn。

收稿日期: 2025-12-28

  网络出版日期: 2026-03-11

基金资助

国家自然科学基金项目(32271717); 福建省科技厅对外合作项目(2025I0012); 福建师范大学2025年大学生创新创业训练计划项目(cxxl-2025080)

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Effects and Mechanisms of Warming on Soil Microbial Necromass Carbon and Nitrogen Accumulation in Mature Chinese Fir Plantations

  • QIU Qixin ,
  • HUANG Yangyang ,
  • ZHA Manli ,
  • ZHONG Xianfang ,
  • GUO Jianfen
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  • a. Institute of Geography, b. School of Geographical Sciences, School of Carbon Neutrality Future Technology, c. Fujian Provincial Key Laboratory of Plant Eco-physiology, Fujian Normal University, Fuzhou 350117, China

Received date: 2025-12-28

  Online published: 2026-03-11

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摘要

土壤微生物残体是土壤稳定碳氮库的核心组成部分,其对气候变暖的响应因生态系统类型而异。为揭示亚热带森林土壤碳氮对全球变暖的响应,以杉木成熟林为研究对象,依托长期野外土壤增温(+4℃)试验平台,设置增温(W)和对照(CT)处理,探究增温对土壤微生物残体碳(MNC)、残体氮(MNN)及其积累系数(NAC与NAN)的影响。结果表明：增温显著提升微生物生物量碳(MBC)达36.56%,同时显著降低土壤含水率(降幅30.25%)与游离氨基酸含量(降幅27.37%)。微生物残体组成发生细微调整,其中真菌残体碳、氮占总残体碳、氮的比例小幅下降,细菌残体氮占比则略有上升。长期增温未显著改变土壤MNC、MNN总量及NAC、NAN值,表明微生物残体库在增温条件下维持动态平衡。相关性分析表明,微生物生物量氮(MBN)与残体碳、氮含量呈显著正相关,可溶性有机碳(DOC)与NAC显著正相关,说明MBN和DOC是调控微生物残体积累的关键因子。综上,长期增温下,亚热带杉木林土壤微生物可能通过热适应或碳氮耦合机制维持微生物残体库的动态平衡,该结果为深入理解亚热带森林土壤碳氮固持调控机理及其与气候变化的反馈关系提供理论依据。

关键词： 增温; 微生物残体碳; 微生物残体氮; 微生物残体积累系数; 亚热带杉木林

本文引用格式

邱萁昕 , 黄杨杨 , 查满丽 , 钟羡芳 , 郭剑芬 . 增温对杉木成熟林土壤微生物残体碳、氮积累的影响及机制[J]. 亚热带资源与环境学报, 2026 , 21(1) : 55 -62 . DOI: 10.19687/j.cnki.1673-7105.2026.01.006

Abstract

Soil microbial necromass is a major components of stable soil carbon(C) and nitrogen(N) pools, and their responses to climate warming vary across different ecosystem types. To elucidate the feedbacks of soil C and N to global warming in subtropical forests, this study was conducted in a mature Chinese fir(Cunninghamia lanceolata) forest, based on a long-term field soil warming platform with a temperature increase of 4 ℃. Two treatments—warming(W) and control(CT) were established to systematically investigate the effects of warming on soil microbial necromass carbon(MNC), microbial necromass nitrogen(MNN), and their accumulation coefficients(Nitrogen Accumulation Coefficient for Carbon, NAC; Nitrogen Accumulation Coefficient for Nitrogen, NAN). The results showed that warming significantly increased soil microbial biomass carbon(MBC) by 36.56%, while significantly decreasing soil moisture(30.25%) and free amino acid content(27.37%). The composition of microbial necromass also exhibited subtle changes: the proportions of fungal necromass C and N relative to total microbial necromass C and N decreased slightly, whereas the proportion of bacterial necromass N increased slightly. However, long-term warming did not significantly alter the total contents of soil MNC and MNN or the values of NAC and NAN, indicating that the microbial necromass maintained a dynamic equilibrium under warming conditions. Correlation analysis revealed that microbial biomass nitrogen(MBN) was significantly and positively correlated with MNC and MNN contents, and dissolved organic carbon(DOC) was also significantly positively correlated with NAC, suggesting that MBN and DOC are key regulators of microbial necromass accumulation. In conclusion, under long-term warming, soil microbial necromass pool in subtropical Chinese fir forests may maintain the dynamic equilibrium through microbial thermal adaptation or C-N coupling mechanisms. These findings provide important theoretical support for a deeper understanding of the regulatory mechanisms of carbon and nitrogen retention in subtropical forest soils and their feedback relationships with climate change.

Key words： warming; microbial necromass carbon(MNC); microbial necromass nitrogen(MNN); microbial necromass accumulation coefficient; subtropical Chinese fir forest

参考文献

[1] IPCC.Climate Change 2021:The Physical Science Basis [M] // MASSON-DELMOTTE V,ZHAI P M,PIRANI A,et al.Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change.Cambridge:Cambridge University Press,2021:14.
[2] 赵东升,高璇,吴绍洪,等.基于自然分区的1960—2018年中国气候变化特征[J].地球科学进展,2020,35(7):750-760.[ZHAO D S,GAO X,WU S H,et al.Trend of climate variation in China from 1960 to 2018 based on natural regionalization [J].Advances in Earth Science,2020,35(7):750-760.]
[3] 第八次全国森林资源清查结果[J].林业资源管理,2014(1):1-2.
[State Forestry Administration.Results of the 8th national forest resources inventory[J].Forest Resources Management,2014(1):1-2.]
[4] SUN T,ZHANG T,ZHOU J,et al.Soil nitrogen availability regulates fungal necromass contribution to soil organic carbon during vegetation restoration[J].Applied Soil Ecology,2025,213:106279.
[5] WANG Q C,YANG L M,SONG G,et al.The accumulation of microbial residues and plant lignin phenols are more influenced by fertilization in young than mature subtropical forests[J].Forest Ecology and Management,2022,509:120074.
[6] 马志良,刘美,赵文强.增温对高寒灌丛土壤呼吸不同组分的影响机制[J].生态环境学报,2019,28(3):636-642.[MA Z L,LIU M,ZHAO W Q.Influencing mechanisms of warming on the soil respiration components in an alpine scrubland[J].Ecology and Environmental Sciences,2019,28(3):636-642.]
[7] 卢孟雅,丁雪丽.基于Meta分析的增温对土壤微生物残体积累影响[J].土壤学报,2024,61(5):1444-1454.[LU M Y,DING X L.A meta-analysis of soil microbial necromass accumulation in response to climate warming[J].Acta Pedologica Sinica,2024,61(5):1444-1454.]
[8] LIU X,REICH P B,LIANG C,et al.Ecosystem-level warming reduces microbial necromass in the topsoil but not in deeper soil of a subtropical forest[J].Geoderma,2025,458:117336.
[9] ROY CHOWDHURY P,GOLAS S M,ALTEIO L V,et al.The transcriptional response of soil bacteria to long-term warming and short-term seasonal fluctuations in a terrestrial forest[J].Frontiers in Microbiology,2021,12:666558.
[10] ZHANG X D,AMELUNG W.Gas chromatographic determination of muramic acid,glucosamine,mannosamine,and galactosamine in soils[J].Soil Biology and Biochemistry,1996,28(9):1201-1206.
[11] 王杉杉,徐秋芳,范博,等.毛竹扩张对杉木林土壤微生物残体碳积累的影响[J].生态学报,2023,43(5):1902-1912.[WANG S S,XU Q F,FAN B,et al.Effects of Moso bamboo expansion on accumulation of soil microbial residual carbon in Chinese fir forest [J].Acta Ecologica Sinica,2023,43(5):1902-1912.]
[12] 秦金鑫,吴茂林,王昕悦,等.氮肥配施牛粪对干旱区棉田土壤团聚体及其微生物残体氮的影响[J].土壤,2025,57(5):1034-1042.[QIN J X,WU M L,WANG X Y,et al.Effects of nitrogen fertilizer combined with cattle manure on soil aggregates and their microbial residue nitrogen in cotton field of arid area[J].Soils,2025,57(5):1034-1042.]
[13] HAN B,YAO Y,WANG Y,et al.Microbial traits dictate soil necromass accumulation coefficient:A global synthesis[J].Global Ecology and Biogeography,2024,33:151-161.
[14] 李润. 内蒙古不同草原类型土壤微生物残体碳特征及其影响因子[D].呼和浩特:内蒙古大学,2024:51-52.[LI R.Spatial pattern of soil microbial biomass carbon and its driver in temperate grasslands of Inner Mongolia [D].Hohhot:Inner Mongolia University,2024:51-52.]
[15] SHAO P,HE H,ZHANG X,et al.Responses of microbial residues to simulated climate change in a semiarid grassland[J].Science of the Total Environment.2018,644:1286-1291.
[16] 刘育伟. 干旱对杨树人工林土壤微生物残体有机碳的影响及作用机制[D].南京:南京林业大学,2024:120-121.[LIU Y W.The impact of drought on soil microbial necromass carbon and itsmechanism in poplar plantation forest [D].Nanjing:Nanjing Forestry University,2024:120-121.]
[17] 种碧莹,金显玲,徐海燕,等.长期增温和围栏封育对高寒草原土壤微生物残体碳积累的影响不显著[J].冰川冻土,2023,45(4):1391-1400.[CHONG B Y,JIN X L,XU H Y,et al.Long-term warming and fencing had no significant effects on the carbon accumulation from soil microbial necromass in alpine grassland [J].Journal of Glaciology and Geocryology,2023,45(4):1391-1400.]
[18] 阳东桥,张子寒,卢孟雅,等.表土和底土中微生物残体对增温的差异性响应[J].土壤学报,2026,63(1):322-327.[YANG D Q,ZHANG Z H,LU M Y,et al.Differential responses of microbial necromass to warming in topsoil and subsoil [J].Acta Pedologica Sinica,2026,63(1):322-327.]
[19] LIU X,ZHOU S Y,REICH P B,et al.Robust microbial interactions,not diversity,dominate metabolic thermal adjustment following decadal warming in a subtropical forest[J].Science advances,2025,11(46):eadz3747.
[20] ENG A Y,NARAYANAN A,ALSTER C J,et al.Thermal adaptation of soil microbial growth traits in response to chronic warming[J].Applied and Environmental Microbiology.2023,89(11):e0082523.
[21] QIN S,ZHANG D,WEI B,et al.Dual roles of microbes in mediating soil carbon dynamics in response to warming[J].Nature Communications,2024,15:6439.
[22] 雷骋昊,苏香萍,王云,等.增温对亚热带杉木人工林土壤微生物呼吸及熵值的影响[J].生态学报,2024,44 (14):6186-6194.[LEI C H,SU X P,WANG Y,et al.Effects of soil warming on soil respiration in subtropical Chinese Fir (Cunninghamia lanceolata) Plantation [J].Acta Ecologica Sinica,2024,44:6186-6194.]
[23] 李一凡,石碧婉,杨志颖,等.短期和长期氮磷添加对青藏高原草甸土壤微生物残体积累系数的影响[J].土壤学报,2025,62(3):893-904.[LI Y F,SHI B W,YANG Z Y,et al.Effects of short-term and long-term nitrogen and phosphorus additions on microbial necromass accumulation coefficients in meadow soils of the Qinghai-Tibet Plateau [J].Acta Pedologica Sinica,2025,62(3):893-904.]
[24] 黄施楚,郑裕雄,杨智杰,等.林龄和根际对杉木林土壤DOM和微生物生物量碳氮的影响[J].亚热带资源与环境学报,2023,18 (1):63-70.[HUANG S C,ZHENG Y X,YANG Z J,et al.Effects of stand age and rhizosphere on dissolved organic matter and microbial biomass carbon and nitrogen of soil in Chinese fir forest[J].Journal of Subtropical Resources and Environment,2023,18(1):63-70.
[25] 杨山,李小彬,王汝振,等.氮水添加对中国北方草原土壤细菌多样性和群落结构的影响[J].应用生态学报,2015,26(3):739-746.[YANG S,LI X B,WANG R Z,et al.Effects of nitrogen and water addition on soil bacterial diversity and community structure in temperate grasslands in northern China[J].Chinese Journal of Applied Ecology,2015,26(3):739-746.]
[26] 王静,朱猛,赵鹏,等.氮肥配施生物质碳点对潮土微生物残体碳含量的影响[J].生态与农村环境学报,2024,40(10):1348-1357.[WANG J,ZHU M,ZHAO P,et al.Effects of nitrogen fertilizer combined with biomass carbon dots on contents of microbial necromass carbon in fluvo-aquic soils [J].Journal of Ecology and Rural Environment,2024,40(10):1348-1357.]
[27] 秦文宽,李晓杰,王旭东,等.土壤溶解性有机碳对气候变暖的响应研究进展[J].北京大学学报(自然科学版),2024,60(4):758-766.[QIN W K,LI X J,WANG X D,ZHU B,et al.Responses of soil dissolved organic carbon to climate warming:Areview [J].Acta Scientiarum Naturalium Universitatis Pekinensis,2024,60(4):758-766.]
[28] 孙瑞丰. 模拟增温对黄河三角洲湿地土壤有机碳含量及其稳定性的影响[D].烟台:中国科学院大学(中国科学院烟台海岸带研究所),2023:40-41.[SUN R F.Effects of Warming on Content and Stability of Soil Organic Carbon in a Wetland in the Yellow River Delta [D].Yantai:University of Chinese Academy of Sciences (Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences),2023:40-41.]
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