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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℃.
According to the catch data of the South China Sea from 2006 to 2009, the generalized linear model (GLM) and the generalized additive model (GAM) are used to quantitatively study Year, location, water depth and sea surface temperature (SST) on the catch distribution of small yellow croaker and yellow croaker ..The results show that the GAM model can better explain the fishing effort of small croaker and yellow croaker (P <0.05) .The relationship between spatio-temporal distribution and environmental factors showed that there was a significant negative correlation between the CPUE of the yellow croaker and the yellow croaker, while the CPUE of the yellow croaker showed a decreasing trend from north to south along the latitudinal direction, especially around the Changjiang Estuary. SST had a significant effect on CPUE of yellow croaker and yellow croaker, and the suitable range of surface temperature for small croaker and yellow croaker was 9 ~ 11 ℃ and 9 ~ 14 ℃, respectively.