应用栖息地适宜性指数研究海州湾小黄鱼的空间分布特征  

Spatial Distribution of Larimichthys polyactis in Haizhou Bay Based on Habitat Suitability Index

作　　者：邹易阳 薛莹[1] 麻秋云[1] 徐宾铎[1] 任一平[1] 

机构地区：[1]中国海洋大学水产学院,山东青岛266003

出　　处：《中国海洋大学学报（自然科学版）》2016年第8期54-63,共10页Periodical of Ocean University of China

基　　金：高等学校博士学科点专项科研基金项目(20120132130001);中央高校基本科研业务费专项资金项目(201022001;201262004);国家留学基金项目资助~~

摘　　要：为研究海州湾小黄鱼(Larimichthys polyactis)的空间分布特征。于2011、2013及2014年的春、秋两季在海州湾进行了渔业资源与栖息环境综合调查,根据调查结果和同步采集的底层水温、底层盐度及水深数据,构建了海州湾小黄鱼的栖息地适宜性指数(Habitat suitability index,HSI)模型,利用赤池信息量准则值(Akaike information criterion,AIC)检验算术平均法(AM)和几何平均法(GM)的拟合度,对模型输出结果进行分析和比较。研究表明:除秋季的水深外,其余各环境因子与适宜性指数间均呈现明显的正态或偏正态关系。通过AIC检验发现,春季用几何平均法拟合栖息地适宜性指数的效果较好,而秋季用算术平均法拟合的效果较好。小黄鱼的最适栖息地存在明显的年间变化和季节变化,春季HSI高值区域多集中于34.7°N,120.2°E附近海域;秋季HSI高值中心位于34.5°N^34.7°N,120.0°E^120.2°E附近海域。研究结果表明,栖息地适宜性指数模型能够较好地反映海州湾小黄鱼栖息地的分布和变化情况,在单因素SI极小值出现频率较高的情况下,算术平均法要优于几何平均法。Larimichthys polyactis, small yellow croaker, is one of the dominant fish species along Chinese coast. It also sdplays an important role in marine ecosystem. Previous studies focused on its growth and mortality, stock assessment, migration~ however few on its habitat quality. In this study, habitat suita- bility index （HSI） models were used to evaluate the habitat quality of small yellow croaker in Haizhou Bay, China. Habitat suitability was determined with data collected from bottom trawl surveys in Haizhou Bay in spring and autumn in 2011, 2013 and 2014. March represented springs while September represented the autumn in 2011 and October represented autumn in 2013 and 2014. Sea bottom temperature （SBT）, sea bottom salinity （SBS） and depth were used in HSI model by reclassifying the habitat map on a 0-1 suit- ability index range. Following reclassification, the arithmetic mean （AM） and geometric mean （GM） of the suitability indexof each variable were calculated and the map of habitat suitability was illustrated with Surfer 11.0. Goodness of fit for the two modeling methods was tested with Akaike Information Criterion （AIC）. The results of different modeling methods were used to calculate the habitat suitability index （HSI）. Results showed that small yellow croaker mainly inhabited the area where SBT ranged from 14.0 to 16.0 ℃, SBS ranged from 31.2 to 31.8, and depth ranged from 14, 0 to 20.0 m in spring. In autumn, small yellow croaker mainly inhabited the area where SBT varied between 22.4 and 22.7 ℃, SBS varied between 30.4 and 30.7, and depth varied between 14. 6 and 16.6 m. All environmental factors expect for depth related either normally or half-normally with suitability index （P〈0.01）. The value of AIC indica- ted that the best goodness of fit calculated with equations in different months was different. Geometric mean model produced better estimation in spring whereas arithmetic mean model produced better estima- tion in autumn. The area with the highest habitat quali

关 键 词：小黄鱼 栖息地适宜性指数 海州湾 环境因子 空间分布 

分 类 号：P723[天文地球—海洋科学]