摘要
帆张网渔业是黄海南部重要的渔业捕捞方式之一.本文根据2006—2009年春季黄海南部帆张网的渔获数据,利用广义线性模型(GLM)和广义加性模型(GAM)定量研究了年份、位置、水深和海水表层温度(SST)对小黄鱼和黄鮟鱇渔获量分布的影响.结果表明:GAM模型较GLM模型可以更好地解释小黄鱼和黄鮟鱇单位捕捞努力量渔获量(CPUE)时空分布与环境因子之间的关系.小黄鱼和黄鮟鱇CPUE呈显著负相关,小黄鱼CPUE呈现由北向南沿纬度方向逐渐减小的趋势,尤其在长江口周围较小;黄鮟鱇CPUE在长江口附近也较小.SST对小黄鱼和黄鮟鱇CPUE的影响显著,小黄鱼和黄鮟鱇适宜表温范围分别为9～11℃和9～14℃.
Stow net fishery is one of the important fishing methods in southern Yellow Sea.Based on the 2006-2009 data from the stow net fishery resources survey in the southern Yellow Sea in spring,and by using the generalized linear model （GLM） and generalized additive model （GAM）,this paper quantitatively analyzed the relationships between the catch distribution of Pseudosciaena polyactis and Lophius litulon and the environmental factors such as year,position,water depth,and sea surface temperature （SST）.Compared with GLM model,GAM model could better explain the relationships between the spatiotemporal distribution of the catch per unit effort （CPUE） of P.polyactis and P.litulon and the environmental factors.There was a significant negative correlation between the CPUE of the two fish species.The P.polyactis＇ CPUE showed a decreasing trend from north to south along the latitude direction,being smaller especially around the Yangtze River estuary,and the L.litulon＇s CPUE was also smaller near the Yangtze River estuary.The CPUE of the two species showed a significant correlation with the SST.The calculated optimal scale of the SST for L.polyactis and P.litulon was 9-11 ℃ and 9-14 ℃,respectively.
出处
《应用生态学报》
CAS
CSCD
北大核心
2012年第10期2887-2892,共6页
Chinese Journal of Applied Ecology
基金
国家海洋公益性行业科研专项(201205014-09)资助
关键词
黄海南部
帆张网
广义加性模型
小黄鱼
黄鮟鱇
southern Yellow Sea
stow net
generalized additive model
Pseudosciaena polyactis
Lophius litulon.
