作为生物多样性丰富、与人类活动交互性高的近海生态系统，监测红树林/滨海盐沼等近海蓝碳系统固碳能力和生态环境变化，构建海岸带生态安全屏障，具有多重生态价值和碳汇经济价值。研究将汇总蓝碳系统中包括植被、微生物作用、有机碳埋藏等影响碳储量的不同因素，定量各因子的碳汇功能和储碳能力，探究该生态系统环境变化对碳吸收的影响机制。这为开展我国红树林/滨海盐沼的保护修复工程提供基本理论支撑，在此基础上可以有针对性地加强蓝碳系统管理，有效提升其固碳能力，实现海洋资源利用与碳中和的平衡。

As an offshore ecosystem with rich biodiversity and high interaction with human activities, it has multiple ecological values and economic values of carbon sink to monitor the carbon sequestration capacity and ecological environment changes of offshore blue carbon system such as mangrove/maritime salt marsh to build an ecological security barrier in the coastal zone. Our study will summarize different factors affecting carbon storage in blue carbon systems, including vegetation, microbial action, organic carbon burial, etc., and quantify the carbon sink function and carbon storage capacity of each factor, and investigate the mechanism of environmental changes in this ecosystem on carbon sequestration. This provides basic theoretical support for carrying out the protection and restoration projects of mangrove/maritime salt marsh in China, based on which the management of the blue carbon system can be strengthened in a targeted manner to effectively enhance its carbon sequestration capacity and achieve a balance between marine resource utilization and carbon neutrality.

Cai et al., 2020, Annual Review of Marine Science

近海与开阔大洋碳交换示意图

Schematic of carbon exchange between coastal and open ocean