应用生态学报2017，Vol.28Issue(10)：3409-3416,8.DOI:10.13287/j.1001-9332.201710.040
基于空间自相关的东海带鱼聚集特征年代际变化
Inter-decadal variation of spatial aggregation of Trichiurus japonicus in East China Sea based on spatial autocorrelation analysis
摘要
Abstract
Marine fish shows high heterogeneity in spatial aggregation.We analyzed the inter-decadal variations of stock density for Trichiurus japonicus in East China Sea (ECS) using geo-statistical approaches such as spatial autocorrelation and hotspot analysis,based on the data of T.japonicus from both bottom trawl fishery and research surveys in the open waters of ECS during 1971 to 2011,combined with the sea surface temperature (SST) and surface salinity data in the PN section in August.The global spatial autocorrelation statistics showed that Moran's I firstly decreased and then went up,indicating that the spatial aggregation patterns of T.japonicus was weakened in the beginning and then increased during 1971 to 2011.The surface salinity in the PN section displayed the opposite trend during the same period.The local spatial autocorrelation statistics showed that the population firstly moved to the southern ECS and then to the northern ECS except in 1971 in which the population concentrated in the middle of ECS because of the restriction of offshore fishing ground.The movement of hotspot areas of T.japonicus adaptively varied with the first EOF mode of SST in summer (sumEOF1),which indicated that the hotspot areas first moved southeastward with decreasing sumEOF1,and moved northeastward with increasing sumEOF1,but all of the hotspot areas were close to the northward branch of the Kuroshio Current.关键词
带鱼/空间自相关/热点分析/年代际变化/东海Key words
Trichiurus japonicus/spatial autocorrelation/hotspot analysis/inter-decadal variation/East China Sea引用本文复制引用
袁兴伟,刘尊雷,金艳,崔学森,周为峰,程家骅..基于空间自相关的东海带鱼聚集特征年代际变化[J].应用生态学报,2017,28(10):3409-3416,8.基金项目
本文由国家公益性行业(农业)科研专项(201303047)和农业部近海渔业资源调查项目(1999-2011)资助 This work was supported by the Special Fund for Ago-Scientific Research in the Public Interest (201303047) and the Offshore Fisheries Resources Investigation Program of Ministry of Agriculture of China(1999-2011). （农业）
