【摘要】 山东省庙岛群岛海域的海藻资源十分丰富，在近海海洋碳汇具有重要潜力，但目前关于庙岛群岛海藻场的基础数据和相关研究尚非常缺乏，限制了对海藻场碳汇的核算和评价。为弥补庙岛群岛海藻场基础数据的空白，本研究选择山东省庙岛群岛10个居民岛，采用水肺潜水方式对潮下带海藻场的分布进行了调查和样方取样，并对藻场中大型海藻的种类、生物量、优势种、群落多样性等海藻资源信息进行了鉴定和统计，进而结合环境背景、对10个岛的海藻场群落结构特征进行了聚类分析分析。本研究共采集到大型海藻34种，隶属21科、25属。其中红藻18种，涉及11科、15属；绿藻4种，涉及2科、2属；褐藻12种，涉及8科、8属。大型海藻优势种有海带、裙带菜、海黍子、石花菜、日本角叉菜、石莼、叉开网翼藻、海蒿子、酸藻等。统计分析结果显示，砣矶岛、小钦岛的生物量密度较高；北长山岛海藻场物种丰富度最高，庙岛、南隍城岛次之；南隍城岛海藻场多样性指数最高，北长山岛和砣矶岛次之；南隍城岛海藻场均匀度指数也均高于其他区域。聚类分析（Cluster）结果显示，南五岛（南长山岛、北长山岛、庙岛、大黑山岛、小黑山岛）与北五岛（砣矶岛、大钦岛、小钦岛、南隍城岛、北隍城岛）在群落结构上具有显著差异，且北五岛平均生物量高于南五岛，这表明地理格局是驱动群落组成差异的关键因素。本研究在一定程度上弥补了山东省海藻资源相关基础数据的空白，可为山东省海藻场的碳汇评价和发展近海蓝碳增汇提供重要的数据和理论支持。更多还原

【Abstract】 The Miaodao Archipelago in Shandong Province are rich in seaweed resources and hold great potential for nearshore marine carbon sinks. However, fundamental data and research related to the seaweed beds in this region remain scarce, which astricts the calculation and evaluation to carbon sink of seaweed beds. Therefore, this study aimed to complement the gap in baseline information regarding seaweed beds in the Miaodao Archipelago. In this study, 10 residential islands of Miaodao archipelago in Shandong Province were selected and the distribution of seaweed fields in the subtidal zone was investigated and sampled by scuba diving. Seaweed resource information in the seaweed beds, including the distribution and area of seaweed beds, species composition, biomass, dominant species, and community diversity, was identified and counted, and then combined with the environmental context, the community structure characteristics of the seaweed beds in the 10 islands were clustered. A total of 34 species of macroalgae were collected, belonging to 21 families and 25 genera. Among them were 18 species of red algae(11 families, 15 genera), 4 species of green algae(2 families, 2 genera), and 12 species of brown algae(8 families, 8 genera). The dominant macroalgal species in the region included Saccharina japonica, Undaria pinnatifida, Sargassum muticum, Gelidium amansii, Chondrus nipponicus, Ulva lactuca, Dictyopteris divaricata, Sargassum pallidum,and Desmarestia viridis. The results of statistical analysis revealed that Tuoji Island and Xiaoqin Island had relatively high biomass density. Nouth Changshan Island exhibited the highest species richness, followed by Miao Island and South Huangcheng Island. South Huangcheng Island had the highest diversity index, with Nouth Changshan Island and Tuoji Island ranking next, and also showed the highest evenness index among the surveyed sites.Cluster analysis results indicated significant differences in community structure between the five southern islands(South Changshan Island, North Changshan Island, Miaodao Island, Daheishan Island, Xiaoheishan Island) and the five northern islands(Tuoji Island, Daqin Island, Xiaoqin Island, South Huangcheng Island, North Huangcheng Island), mainly due to geographic variation. This study helps complement the gap in baseline information regarding seaweed beds in Shandong Province, thus providing essential data for the carbon sink evaluation and theoretical support for development of nearshore blue carbon sink of seaweed beds in Shandong Province.更多还原