| 珠海桂山风电场水域渔业资源声学评估与空间分布 |
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| 引用本文： | 王腾,黄洪辉,张鹏,张书飞,吴风霞,刘庆霞,廖秀丽,谢斌.珠海桂山风电场水域渔业资源声学评估与空间分布[J].中国水产科学,2020,27(12):1496-1504. |
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| 作者姓名： | 王腾 黄洪辉 张鹏 张书飞 吴风霞 刘庆霞 廖秀丽 谢斌 |
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| 作者单位： | 中国水产科学研究院南海水产研究所, 农业农村部南海渔业资源开发利用重点实验室, 广东省渔业生态环境重点实验室, 广东 广州 510300;中国水产科学研究院南海水产研究所, 农业农村部南海渔业资源开发利用重点实验室, 广东省渔业生态环境重点实验室, 广东 广州 510300;南方海洋科学与工程广东省实验室(广州), 广东 广州 511485;滨海湿地生态系统教育部重点实验室, 厦门大学环境与生态学院, 福建 厦门 361102 |
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| 基金项目： | 广东省促进经济发展专项资金（海洋经济发展用途）项目（GDME-2018B001，GDNRC[2020]019）；南方海洋科学与工程广东省实验室（广州）人才团队引进重大专项（GML2019ZD0402）；农业农村部财政专项（NFZX2018）. |
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| 摘 要： | 2019年10月24日至26日，使用便携式Simrad EY60科学探鱼仪对珠海桂山岛海上风电场水域的渔业资源进行了声学调查，研究了该水域的渔业资源组成、数量密度、资源量密度及其空间分布。本次调查共捕获游泳生物和底栖无脊椎动物72种，其中34种参与声学评估。扫海面积法估算的鱼类平均数量密度与资源量密度分别为1.09×104尾/km2，227.48 kg/km2；声学方法估算的鱼类数量密度与资源量密度分别为5.97×105尾/km2，15.13 t/km2。风电场水域鱼类聚集性分布明显，在风电场西北与东南外围水域密度较高，中间水域的密度较低。鱼类单体目标强度（TS）分布范围为-68~-41dB，其中-68~-58 dB的单体TS占主要部分（79.12%），对应鱼类的体长范围为3~8 cm；随着水深的增加，单体平均TS先减小后增大。本研究是桂山风电场水域渔业资源的首次声学调查，结果较准确地反映了风电场水域多种鱼类的资源量及其分布信息，可为科学评价海上风电场建成运营后对渔业资源的长期影响提供基础数据。
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| 关 键 词： | 渔业资源 声学评估 时空分布 桂山风电场 中国南海 |
| 收稿时间： | 2020/4/16 0:00:00 |
| 修稿时间： | 2020/6/23 0:00:00 |
Acoustic survey of fisheries resources and spatial distribution in the Guishan wind farm area |
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| WANG Teng,HUANG Honghui,ZHANG Peng,ZHANG Shufei,WU Fengxi,LIU Qingxi,LIAO Xiuli,XIE Bin.Acoustic survey of fisheries resources and spatial distribution in the Guishan wind farm area[J].Journal of Fishery Sciences of China,2020,27(12):1496-1504. |
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| Authors: | WANG Teng HUANG Honghui ZHANG Peng ZHANG Shufei WU Fengxi LIU Qingxi LIAO Xiuli XIE Bin |
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| Institution: | South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs;Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China;South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences;Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization, Ministry of Agriculture and Rural Affairs;Guangdong Provincial Key Laboratory of Fishery Ecology and Environment, Guangzhou 510300, China;Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511485, China; Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, China |
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| Abstract: | Based on acoustic and bottom trawl survey data in the Guishan wind farm area in autumn 2019, we analyzed the species composition, species dynamics, and spatial distribution of fisheries resources in that area. A total of 72 species of swimming organisms and benthic invertebrates were caught, of which 34 species were assessed in this survey. The number and biomass estimated by the acoustic method were 5.97×105 ind/km2 and 15.13 t/km2, respectively. Fish aggregation distribution characteristics were obvious in this area, and the density was higher in the northwest and southeast regions. The distribution range of fish single TS was -68--41dB, of which -68--58dB was dominant (79.12%), corresponding to a fish body length of 3-8 cm. With increasing water depth, the mean fish TS first decreased and then increased. This study was the first acoustic survey of fisheries resources in this area. The assessment results could provide accurate information on the quantity and distribution of various fish species, and provide basic data for monitoring long-term changes in fisheries resources after the wind farm has been completed. |
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| Keywords: | fisheries resources acoustic assessment spatial distribution Guishan wind farm area South China Sea |
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