滨海盐沼湿地有机碳的沉积与埋藏研究进展  

Deposition and burial of organic carbon in coastal salt marsh:Research progress

作　　者：曹磊[1,2] 宋金明[1] 李学刚[1] 袁华茂[1] 李宁[1] 段丽琴[1] 

机构地区：[1]中国科学院海洋研究所生态与环境科学重点实验室,山东青岛266071 [2]中国科学院大学,北京100049

出　　处：《应用生态学报》2013年第7期2040-2048,共9页Chinese Journal of Applied Ecology

基　　金：国家海洋公益性项目(201205008);国家海洋局环境评价项目[DOMEP(MEA)-01-01]资助

摘　　要：滨海盐沼湿地有着较高的碳沉积速率和固碳能力,在缓解全球变暖方面发挥着重要作用,而盐渍土壤是滨海盐沼湿地碳收支研究中最大的有机碳库,研究其碳沉积与埋藏对于理解滨海湿地碳收支有着重要的意义.本文从滨海盐沼湿地土壤有机碳的来源、土壤有机碳库与沉积速率、盐沼湿地有机碳的埋藏机制、全球变化与滨海盐沼湿地碳封存等几方面对滨海盐沼湿地有机碳沉积与埋藏的相关研究进行综述.今后研究应侧重:1)加强对控制滨海盐沼湿地碳储存变异的基本因素的进一步研究;2)对测量滨海盐沼湿地沉积物碳储量和沉积碳埋藏速率的方法进行标准化;3)对潮汐影响下滨海盐沼湿地碳与邻近生态系统之间的横向交换通量进行量化;4)探明全球变暖的影响和生产力的提高是否可以抵消因呼吸增强而造成的有机碳降解速率的升高.确定固碳速率变化驱动因子,理解气候变化和人类活动对碳埋藏的影响机制,有助于提升我国滨海盐沼湿地的固碳能力.Coastal salt marsh has higher potential of carbon sequestration, playing an important role in mitigating global warming, while coastal saline soil is the largest organic carbon pool in the coastal salt marsh carbon budget. To study the carbon deposition and burial in this soil is of significance for clearly understanding the carbon budget of coastal salt marsh. This paper summarized the research progress on the deposition and burial of organic carbon in coastal salt marsh from the aspects of the sources of coastal salt marsh soil organic carbon, soil organic carbon storage and deposition rate, burial mechanisms of soil organic carbon, and the relationships between the carbon sequestration in coastal salt marsh and the global climate change. Some suggestions for the future related researches were put forward： 1 ） to further study the underlying factors that control the variability of carbon storage in coastal salt marsh, 2） to standardize the methods for measuring the carbon storage and the deposition and burial rates of organic carbon in coastal salt marsh, 3 ） to quantify the lateral exchange of carbon flux between coastal salt marsh and adjacent ecosystems under the effects of tide, and 4） to approach whether the effects of global warming and the increased productivity could compensate for the increase of the organic carbon decomposition rate resulted from sediment respiration. To make clear the driving factors determining the variability of carbon sequestration rate and how the organic carbon storage is affected by climate change and anthropogenic activities would be helpful to improve the carbon sequestration capacity of coastal salt marshes in China.

关 键 词：滨海盐沼湿地 有机碳 沉积与埋藏 

分 类 号：P931.1[天文地球—自然地理学]