西南大西洋阿根廷滑柔鱼渔场叶绿素a分布及其与渔场的关系  

THE DISTRIBUTION OF CHLOROPHYLL-A AND ITS RELATIONSHIP WITH THE ILLEX ARGENTINUS FISHING GROUND OF SOUTHWEST ATLANTIC OCEAN

作　　者：郑丽丽[1,2] 伍玉梅[1] 樊伟[1] 黄妙芬[2] 

机构地区：[1]中国水产科学研究院东海水产研究所,上海200090 [2]大连海洋大学海洋工程学院,辽宁大连116023

出　　处：《海洋湖沼通报》2011年第1期63-70,共8页Transactions of Oceanology and Limnology

基　　金：国家科技支撑计划项目(2006BAD09A05);中央级公益性科研院所基本科研业务费专项项目(2007T09;2008Z01);"863"计划项目(2007AA092202)资助

摘　　要：根据收集到的2000-2007年我国各渔业企业生产数据和卫星获取的叶绿素a浓度环境数据,分析了西南大西洋阿根廷滑柔鱼渔场的叶绿素a与渔场的分布特点及二者之间的关系。研究表明,近8a西南大西洋阿根廷滑柔鱼中心渔场均位于58°W^61°W、44S°~46°S海域,1~5月渔获量随月份的推移呈现季节性周期变化趋势,3月是渔汛期内的捕捞高峰期。研究海域内1~5月叶绿素a浓度基本在0.1~3mg/m3范围内变化,并随月份推移而降低。其中1~3月在50°S附近存在一高浓度叶绿素a的舌状带,由西南向东北伸展,月平均值较高(超过1mg/m3),4~5月高浓度舌状带逐渐消失,整个海域的叶绿素a保持较低的浓度,月平均值下降至0.5mg/m3左右。将叶绿素a浓度数据与单船捕捞量数据按照作业时间和作业渔区匹配插值,并对二者进行频次分析,结果表明渔区内叶绿素a浓度介于0.4~0.5mg/m3之间渔场出现频次最高,渔场出现频次总体上呈偏态分布。对渔获量、叶绿素a分月统计得到每月适宜捕捞作业的叶绿素a浓度范围,并通过K-S显著性检验。Based on the database of production,chlorophyll-a concentration（Chl-a） in the Illex argentinus fishing ground of Southwest Atlantic Ocean,the distribution of chlorophyll-a and its relationship with the fishing ground and SST were mainly analyzed.The results showed that the central fishing ground locates in the water of 58°~61° W and 44°~56°S.The production varies with the season,and it is highest in March.The concentration of chlorophyll-a in the study area changed from 0.1 to 3mg/m3,and it decreases with month.There is chlorophyll-a tongue near 50 S in which the concentration is higher than 1 mg/m3 from January to March.It mainly maintains at 1.2mg/m3 between January and March,higher than that of April and May（0.5mg/m3）.The frequency distribution pattern of the fishing ground is skew.The result of frequency analysis about chlorophyll-a concentration and catch per vessel showed that it is highest when the concentration is in the scope of 0.4-0.5mg/m3.The optimum chlorophyll-a concentration of each month is got after the statistical analysis of monthly production and chlorophyll-a concentration,and passed the K-S test.

关 键 词：西南大西洋 阿根廷滑柔鱼 叶绿素A 渔场 

分 类 号：S931[农业科学—渔业资源]