天然海藻场中大型海藻有机碳含量及碳汇能力估算研究——以浙江枸杞岛潮下带为例  

Estimation of organic carbon content and carbon sequestration capacity of macroalgae in natural seaweed field-Take subtidal zone of Gouqi Island,Zhejiang,as an example

作　　者：赵旭[1,2] 王霄[1] 李训猛 程晓鹏 黄宏[1,2] 章守宇[1,2] ZHAO Xu;WANG Xiao;LI Xunmeng;CHENG Xiaopeng;HUANG Hong;ZHANG Shouyu(College of Marine Ecology and Environment,Shanghai Ocean University,Shanghai 201306,China;Engineering Technology Research Center of Marine Ranching,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]海洋生态与环境学院上海海洋大学,上海201306 [2]上海海洋大学海洋牧场工程技术研究中心,上海201306

出　　处：《海洋湖沼通报（中英文）》2024年第3期82-89,共8页Transactions of Oceanology and Limnology

基　　金：国家重点研发计划项目(2019YFD0901302、2018YFD0900704);现代农业产业技术体系专项资金(CARS-50);国家自然科学基金课题(41876191)。

摘　　要：本文通过声学侧扫和SCUBA Diving水肺潜水,对浙江枸杞岛潮下带大型海藻种类、分布面积、单位面积生物量等进行调查,同时检测了不同大型海藻体内有机碳含量,并基于单位面积海藻生物量,对枸杞岛潮下带海藻场生物量及碳汇能力进行初步估算。结果表明:枸杞岛潮下带大型海藻场分布面积约22.33 ha,分布大型海藻3门19种,不同海藻有机碳含量范围为29.11%~36.85%,褐藻因含有一种特殊的蓝光效应,其有机碳平均含量最高(32.94%),红藻门(31.75%)次之,绿藻门最低(29.39%)。基于单位面积生物量估算海藻场碳汇能力为176.15 g·C/m^(2),该海域海藻场总固碳量约为38.28 t,相当于减排CO_(2)约129.07 t。该研究结果可为近岸海域海藻场碳汇能力研究积累基础数据,也为海洋负减排路径研究提供科学依据。In this paper,the species,distribution area and biomass per unit area of macroalgae in the subtidal zone of Gouqi Island,Zhejiang Province,were investigated through acoustic side scanning and SCUBA diving.At the same time,the organic carbon content of different macroalgae was detected,and based on the biomass per unit area,the biomass and carbon sequestration capacity of the subtidal algal field in Gouqi Island were estimated.The results showed that the distribution area of the subtidal zone algal field is about 22.33 hectares in Gouqi Island,and there were 19 species of 3 phyla of macroalgae are distributed.The content of organic carbon in different species ranged from 29.11%to 36.85%.Brown algae contain a special blue light effect and have the highest average organic carbon content(32.62%)which was followed by Chlorophyta(31.82%)and Chlorophyta(29.39%).The macroalgal carbon sequestration capacity per unit area was estimated to be 176.15g·C/m^(2),and the total carbon sequestration in the sea area is about 38.28 tons,equivalent to about 129.07 tons of CO_(2) emission reduction.The results of this study can accumulate basic data for the study of carbon sequestration capacity of macroalgae farms in coastal waters,and also provided a scientific basis for the study of negative emission reduction path in the ocean.

关 键 词：大型海藻 碳汇 有机碳 枸杞岛 潮下带 

分 类 号：P76[天文地球—海洋科学]