摘要
竹荚鱼(Trachurusjaponicus)是中国南海北部近海主要渔获物之一,其空间分布具有非均匀性。根据2014—2017年南海北部近海两个周期(2014—2015年为第1周期, 2016—2017年为第2周期)的底拖网调查数据,以单位捕捞努力量(catchperuniteffort,CPUE)表征资源密度,采用柯尔莫可洛夫-斯米洛夫检验(Kolmogorov-Smirnov,K-S test)探索了11种概率分布特征。结果表明,南海北部陆架区竹荚鱼不具明显的概率分布特征,而北部湾海域竹荚鱼资源密度服从对数正态分布型且第二周期较第一周期更为显著。同时,采用基于对数正态理论模型法(对数正态模型与Delta模型)与调查设计法(均值法)对该海域进行资源密度估值比较,发现基于对数正态理论模型更切合竹荚鱼资源密度结构分布特征,而在对数正态理论模型中Delta模型法更适用于该物种资源密度估值。
The jack mackerel (Trachurus japonicus) is one of the main catches in the northern South China Sea,and its spatial distribution is non-uniform.According to the two cycles of bottom trawl survey data in the northern South China Sea from 2014 to 2017 (2014–2015 is the first cycle,2016–2017 is the second cycle),resource density is characterized by the catch per unit effort (CPUE).The Kolmogorov-Smirnov test (K-S test) was used to explore 11 probability distribution features.The results showed that the continental shelf area of the northern South China Sea had no obvious probability distribution,while the jack mackerel resource density in the Beibu Gulf obeys the lognormal distribution pattern,and the second cycle is more significant than the first cycle.At the same time,using a lognormal theory model (lognormal model and delta model) and an investigative design method (arithmetic method) to compare the estimation of the resource density within a certain area,we found that the lognormal model is more fit to describe the distribution characteristics of the density structure of jack mackerel,and the delta model is more suitable to estimate the jack mackerel resource density.
作者
晏然
范江涛
陈作志
蔡研聪
张魁
许友伟
徐姗楠
YAN Ran;FAN Jiangtao;CHEN Zuozhi;CAI Yancong;ZHANG Kui;XU Youwei;XU Shannan(Key Laboratory of Open-Sea Fishery Development,Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Fishery Ecology and Environment/South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China;College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)
出处
《中国水产科学》
CAS
CSCD
北大核心
2019年第1期91-98,共8页
Journal of Fishery Sciences of China
基金
公益性行业(农业)科研专项(201403008)
农业财政专项"南海北部近海渔业资源调查"(2014-2018)
广东省促进海洋经济发展专项资金(GDME-2018E004)
中国水产科学研究院南海水产研究所中央级公益性科研院所基本科研业务费专项资金项目(2015TS22)
关键词
竹荚鱼
资源密度
概率分布型
南海北部近海
Trachurus japonicus
resource density
probability distribution
northern South China Sea
