东海及其邻近海域受胁鱼类保护空缺分析

Conservation gap analysis of threatened fish in the East China Sea and adjacent sea areas

本研究以88种受胁鱼类为研究对象,基于公开数据和最大熵模型(maximum entropy models,Max Ent)预测其空间分布规律,进而对东海及其邻近海域开展系统的保护空缺分析,并提出了相应的规划建议。研究结果表明,东海及邻近海域受胁鱼类的热点区面积为1.58×10^(11)m^(2),主要分布于长江口以南的近海和中国台湾海峡海域,其中前10%热点区域面积为5.68×10^(10)m^(2),主要分布在中国台湾岛近岸、澎湖列岛邻近海域、福建和广东沿岸海域。对其分布规律的进一步探究发现,目前东海受胁鱼类的分布可分为6个区域,而已有保护区主要集中在I区和Ⅳ区中,Ⅱ区和Ⅲ区则尚未设置任何相关的保护区,并且大部分受胁鱼类的栖息地均未受到有效保护。本研究结果将为东海及其邻近海域生物多样性保护策略的升级与优化提供科学支撑。

A total of 88 threatened fish species were selected for the study,and their spatial distribution was predicted using publicly available data and the Max Ent model.The conservation gap analysis was performed based on the predicted distribution,and recommendations for the conservation of the East China Sea and adjacent sea areas were proposed.The results showed that the hotspot areas of threatened fish covered 1.58×10^(11)m^(2),mainly located in the southern coastal area of the Yangtze estuary and the Taiwan Strait.Among them,the top 10%of the hotspot areas was about 5.68×10^(10)m^(2),mainly located in the coastal waters of Fujian and Guangdong provinces,and sea areas adjacent to Taiwan Island and Penghu Islands.Further investigation of the distribution patterns revealed that there were six different zones in the current distribution of threatened fish in the East China Sea.The existing marine protected areas are mainly concentrated in zones I andⅣ,while no protected area has been established in zonesⅡandⅢ,indicating that habitats of most threatened fish have not been effectively protected.These results provide a scientific basis for improving and optimizing the fish biodiversity conservation strategies in the East China Sea and adjacent sea areas.