用于渔业资源调查评估的两种声学手段的比较  

Comparison of two acoustic methods for fishery resource survey and evaluation

作　　者：沈蔚[1] 陈明[1] 童剑锋[1] 张进[1] 张华臣 SHEN Wei;CHEN Ming;TONG Jian-feng;ZAHNG Jin;ZAHNG Hua-cheng(College of Marine Science,Shanghai Ocean University,Shanghai,201306,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306

出　　处：《淡水渔业》2018年第1期34-40,共7页Freshwater Fisheries

基　　金：国家自然科学基金青年科学基金项目(41606210);上海市浦江人才计划项目(16PJ1403900);上海海洋大学科技发展专项基金项目(A2020300100215);上海海洋大学博士科研启动基金项目(A2020300100331)

摘　　要：采用数字回声探测仪Bio Sonics DT-X(430 KHz)和双频识别声呐DIDSON(低频1.1 MHz、高频1.8MHz)对青草沙水库的渔业资源量、空间分布特征等进行了为期2 d的水声学调查。在调查过程中两种仪器同步工作,并采用放网捕捞的方法对青草沙水库中的鱼类样本进行采集,并测量其体重与体长。利用Echoview软件对两种仪器采集所得的声学数据进行分析处理。DIDSON的调查结果显示:水库鱼类总数约为936万尾,总的资源量约为705万kg,鱼类主要分布于水库的东部、中部地区。Bio Sonics DT-X的调查结果显示:水库鱼类总数约为1 079万尾,总的资源量约为604.24万kg,鱼类主要分布于水库的东北部地区。An acoustic survey was carried out for 2 days using a digital echo sounder BioSonics DT-X(430 kHz)and a DIDSON(Low-frequency 1.1 MHz,High-frequency 1.8 MHz)together to assess the fishery resources in Qingcaosha reservoir,2016.In the process of investigation,the two instruments were synchronized.In the meantime,the fish samples in Qingcaosha reservoir were collected by net harvesting and then be measured.Acoustic data acquired by these two instruments were analyzed by Echoview.The results of DIDSON showed that the total number of fish reservoirs was about 9.36 million tails,the total amount of resources is about 7.05 million kilogram.The fishes was mainly located in the eastern and central areas of the reservoir.The results of BioSonics DT-X showed that the total number of fish reservoirs is about 10.79 million tails,and the total resources are about 6.042 4 million kilogram,and fishes was mainly distributed in the northeast of the reservoir.

关 键 词：渔业资源 调查 评估 数字回声探测仪 DIDSON 

分 类 号：S932.4[农业科学—渔业资源]