【摘要】 本文根据2020年4月-5月在黄河口近岸海域水平拖网调查获得的鱼卵、仔稚鱼数据，结合同步采集的水深、盐度、叶绿素浓度、溶解氧浓度以及基于遥感数据的水温和离岸距离等因子，开展了黄河口近岸海域鮻（Liza haematocheila）鱼卵、仔稚鱼的栖息地适宜性研究。本研究利用广义可加模型（generalized additive model,GAM）筛选环境因子并确定各因子权重，采用加权平均法建立栖息地适宜性指数（habitat suitability index,HSI）模型。结果表明，海表温度、叶绿素浓度、海表盐度和水深为鮻鱼卵、仔稚鱼分布的关键影响因子，HSI模型中的权重分别为0.6838、0.2043、0.0754、0.0365。4月和5月，最适栖息地的空间分布明显不同，4月，最适栖息地分布在莱州湾，其次为黄河入海口附近及入海口北部的分散区域；5月，最适栖息地则主要分布在入海口周边水域，莱州湾的适宜性降低，适宜栖息地的面积大幅度减少。黄河口近岸海域鮻鱼卵、仔稚鱼最适栖息地的空间分布与其发育阶段、生态习性以及外界环境因子等密切相关。本研究为鮻栖息地保护和资源养护提供了基础数据。更多还原

【Abstract】 This study explored the habitat suitability of mullet Liza haematocheila ichthyoplankton(eggs, larvae and juveniles) in the coastal waters of the Yellow River Estuary. The ichthyoplankton were investigated by horizontal tows. Water depth, sea surface salinity(SSS), chlorophyll-a(Chl a) concentration and dissolved oxygen were collected at each survey station. Sea surface temperature(SST) and offshore distance were obtained by remote sensing. First, generalized additive model(GAM) was used to select optimal environmental factors and determine their weights. Then, the habitat suitability index(HSI) was established by the weighted average method. The results indicated that SST, Chl a concentration, SSS and water depth were the key factors affecting the distribution of mullet ichthyoplankton according to the fitting accuracy of GAM, and their weights were 0.6838, 0.2043, 0.0754 and 0.0365 in the HSI model. The spatial distribution of the most suitable habitat for mullet ichthyoplankton obviously differed in April and May. In April, the most suitable habitat was located in Laizhou Bay, followed by the Yellow River Estuary waters and the scattered areas in the north of the estuary.In May, however, the most suitable habitat was mainly distributed in the estuary waters of the Yellow River,followed by Laizhou Bay, and the area of suitable habitat was greatly reduced. Spatial distribution of the most suitable habitat for mullet ichthyoplankton was closely related to the development stage of the fish, ecological habits and environmental factors in the coastal waters of the Yellow River Estuary. This study provided basic data for habitat protection and restoration of mullet.更多还原