摘要
滨海盐沼湿地所固定的碳主要封存在土壤中,土壤有机碳库稳定性决定了滨海盐沼的碳汇能力。文中综述了滨海盐沼湿地土壤有机碳的固定过程,包括碳输入、碳输出和碳储存,总结出盐沼湿地土壤有机碳稳定性主要受4种机制影响:1)有机碳的难降解性。在土壤有机碳中,烷基碳被认为是最稳定的有机碳。2)团聚体的物理保护。微团聚体中的有机碳受物理保护程度高于大团聚体,更加稳定。3)化学保护机制。黏土矿物和金属氧化物可以促进聚合,提高有机碳稳定性。4)生物保护机制。微生物促进矿物结合有机碳的形成,并且其群落结构可影响土壤有机碳的类型与数量,进而影响土壤碳库的稳定。提出要进行多种稳定性机制的协同研究,为盐沼湿地的修复与增汇协同增效提供参考。
The carbon fixed by coastal salt marsh wetland is mainly stored in soil.The stability of soil organic carbon pool determines the carbon sink capacity of coastal salt marshes.This paper reviews the fixation process of soil organic carbon in coastal salt marsh wetlands,including carbon input,carbon output,and carbon storage.Four mechanisms of soil organic carbon stability in salt marsh wetlands were summarized:1)Recalcitrance of organic carbon compounds.Among soil organic carbon,alkyl carbon is considered to be the most stable organic carbon.2)Physical protection of aggregates.The organic carbon in microaggregates is more stable than that in large aggregates.3)Chemical protection.Clay minerals and metal oxides can promote polymerization and improve the stability of organic carbon.4)Biological protection.Microorganisms promote the formation of mineral-bound organic carbon,and their community structure can affect the type and amount of soil organic carbon,and then affect the stability of soil carbon pool.It is suggested that a collaborative study of various stability mechanisms be carried out.This paper provides reference for the synergistic effect of salt marsh wetland restoration and carbon sink increase.
作者
刘继晨
冯英明
辛荣玉
臧浩
张昊
张明亮
秦华伟
金晓杰
LIU Ji-chen;FENG Ying-ming;XIN Rong-yu;ZANG Hao;ZHANG Hao;ZHANG Ming-liang;QIN Hua-wei;JIN Xiao-jie(Shandong Marine Resource and Environment Research Institute,Shandong Key Laboratory of Marine Ecological Restoration,Observation and Research Station of Laizhou Bay Marine Ecosystem MNR,Yantai 264006,Shandong,China;The First Exploration Team of Shandong Coalfield Geologic Bureau,Qingdao 266000,Shandong,China)
出处
《湿地科学与管理》
2025年第1期7-12,共6页
Wetland Science & Management
基金
山东省海洋局“山东省海洋生态系统碳汇监测评价”项目(20244550)
日照市滨海蓝碳生态系统碳汇潜力调查技术服务(SDHY2023-003)。
关键词
滨海蓝碳
有机碳稳定性
难降解性
团聚体
Coastal blue carbon
Organic carbon stability
Recalcitrance
Aggregates
