单 位：
中国水产科学研究院南海水产研究所/广东省渔业生态环境重点实验室/农业农村部南海渔业资源环境科学观测实验站/广东省休闲渔业工程技术研究中心/中国水产科学研究院海洋牧场技术重点实验室
关键词：
渔场;灯光罩网;时空分布;海洋环境;粤西海域
摘 要：
[目的]明确粤西海域灯光罩网渔场时空和季节变动与海洋环境的关系,为我国南海北部渔业资源的科学评估和有效保护提供参考依据.[方法]根据粤西海域夏季(8—9月)和冬季(1—2月)灯光罩网渔船生产监测资料及卫星遥感数据,其中卫星遥感数据包括海表温度(Sea surface temperature,SST)、叶绿素a浓度(Chlorophyll a concentra-tion,Chla)和海面风场(Sea surface wind,SSW),运用广义线性模型(Generalized linear model,GLM)、渔场重心及相关性分析等方法对粤西海域灯光罩网渔场时空分布与海洋环境的关系进行分析.[结果]粤西海域冬季SSW高、SST低、Chla高,夏季SSW低、SST高、Chla低.在冬季,粤西海域灯光罩网渔场主要分布在东经111°30′~113°、北纬20°30′~21°30′、Chla 0.3~2.0 mg/m3、SST 19.0~23.5℃的海域,其中较高的标准化单位捕捞努力量渔获量(Standardized catch per unit effort,SCPUE)(1.0~2.0)主要分布在Chla 0.4~1.0 mg/m3、SST 20.5~23.0℃的海域.在夏季,粤西海域灯光罩网渔场主要分布在东经111°45′~113°45′、北纬20°30′~21°、Chla 0.1~1.0 mg/m3、SST 28.9~29.5℃的海域,其中较高的SCPUE(2.0~4.0)主要分布在Chla 0.2~0.5 mg/m3、SST 28.9~29.4℃的海域.相对于冬季,夏季粤西海域灯光罩网渔场重心发生东移,渔场经度重心季节变化范围约1°.[结论]粤西海域渔业资源呈夏季高、冬季低的变化趋势,且从冬季到夏季其渔场经度重心约东移1°,主要与琼东—粤西上升流、粤西沿岸流及主要捕捞种类(鲹科鱼类)等有关.
译 名：
Relationship between the spatio-temporal distribution of light falling-net fishing ground and marine environment in the western Guangdong waters
作 者：
LIU Zhu-nan;YU Jing;CHEN Pi-mao;YU Jie;WANG Yan-feng;South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment,Scientific Observing and Experimental Station of South China Sea Fishery Resources and Environment,Ministry of Agriculture and Rural Affairs/Guangdong Engineering Technology Research Center of Marine Recreational Fishery/Key Laboratory of Marine Ranching Technology,Chinese Academy of Fishery Sciences;College of Marine Science,Shanghai Ocean University;
关键词：
fishing ground;;light falling-net;;spatio-temporal distribution;;marine environment;;western Guangdong waters
摘 要：
【Objective】The relationship betweenthe spatio-temporal distribution of light falling-net fishing ground in the western Guangdong waters and mairine environment was studied to provide reference for science evaluation and protection of fishery resources in northern South China Sea.【Method】The relationship between the spatio-temporal distribution of light falling-net fishing ground and marine environment was investigated,based on production monitoring data and satellite remote sensing data,including sea surface temperature(SST),chlorophyll a concentration(Chla)and sea surface Wind(SSW)in summer(August to September)and winter(January to February)in the western Guangdong waters,using Generalized Linear Model(GLM),fishing ground gravity and correlation analysis.【Result】Results showed that there were high SSW,low SST,high Chla in winter and low SSW,high SST,low Chla in summer in the western Guangdong waters. Light falling-net fishing ground in the western Guangdong waters in winter were mainly distributed inthe seawaters with east longitude 111°30 ′-113°,north latitude 20°30 ′-21°30 ′,Chla 0.3-2.0 mg/m3 and SST 19.0-23.5 ℃.The high standardized catch per unit effor(tSCPUE)(1.0-2.0)was distributed in the seawaters with Chla 0.4-1.0 mg/m3 and SST 20.5-23.0 ℃. While in summer,the light falling-net fishing ground in the western Guangdong waters were mainly distributed in the seawaters with east longitude 111°45 ′-113°45 ′,north latitude 20°30 ′-21°,Chla 0.1-1.0 mg/m3 and SST28.9-29.5 ℃. The high SCPUE(2.0-4.0)was distributed in the seawaters with Chla 0.2-0.5 mg/m3 and SST 28.9-29.4 ℃.Compared with in winter,the fishing ground gravity migrated to the east in summer,and the seasonal longitude variation was about 1°.【Conclusion】The fishery resources in western Guangdong waters are rich in summer and poor in winter,and the fishing ground gravity migrates 1° to the east from winter to summer. It is related to eastern Hainan-western Guangdong upwelling,western Guangdong longshore current and main fishing resources(Carangidae).
