海草床生态系统碳循环研究进展

打开文本图片集

中图分类号：P74 文献标志码：A 文章编号：1004—6755(2025)11—0050—04

DOI:10.3969/j.issn.1004-6755.2025.11.013

¹，²，¹，¹，¹，¹，许祯行¹，(1.，2.，）

Recent development in the research of carbon cycle in seagrass ecosystem

LI Yong1，JI Yanan²，GE Yingnan¹，WANG Luping1，ZENG Chen1, DU Xin1 ，XUZhenxing1,CHENWenbo1 (1.Dalian Marine Development Affairs Services Center，Dalian116o23，China; 2.DalianMarine Center of the Ministry of Natural Resources，Dalian 116ol5,China)

Abstract: Against the backdrop of persistently increasing global CO2 concentrations，the study of carbon cycling mechanisms and carbon sequestration functions in seagrass bed ecosystems，as efficient blue carbon sinks，is of great significance. This paper systematically analyses the processes of organic carbon and inorganic carbon transport and transformation in the water column， sediments，and at their interfaces by reviewing research methodologies on carbon cycling in seagrass bed ecosystems. Studies indicate that global seagrass beds have an annual organic carbon burial flux of 53～58gC/m2 with sediment carbon stocks as high as 4.2～8.4Pg ;seagrasses primarily utilize HCO3- for photosynthetic carbon fixation，and the long-term burial of carbonates results in the system acting as a net carbon sink. Current research faces challenges such as the accurate quantification of carbon fluxes and understanding spatiotemporal heterogeneity. Future efforts should focus on establishing multi一scale observation networks，developing coupled models，and promoting global data sharing to overcome technical bottlenecks，thereby providing a scientific basis for improving carbon offset mechanisms, supporting international climate negotiations，and fostering the blue carbon economy.

Key words:seagrass bed ecosystem;carbon cycle;carbon flux;carbon sink;stable isotopes

全球 CO2 浓度持续上升，让应对全球变暖的前景更加严峻[1]。（剩余9766字）