用于渔业资源调查评估的两种声学手段的比较
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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 Bio Sonics DT-X(430 k Hz) 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 Bio Sonics 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.
An acoustic survey was carried out for 2 days using a digital echo sounder Bio Sonics DT-X(430 k Hz) 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 Bio Sonics 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.
引文
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[4]孙明波,谷孝鸿,曾庆飞,等.基于水声学方法的太湖鱼类空间分布和资源量评估[J].湖泊科学,2013,25(1):99-107.
[5]童剑锋,韩军,浅田昭,等.基于声学摄像仪的溯河洄游幼香鱼计数[J].渔业现代化,2009,36(2):29-33.
[6]张进.基于双频识别声呐DIDSON的鱼群定量评估技术[D].上海:上海海洋大学,2012.
[7]叶昌臣,黄斌.渔业生物数学[M].北京:农业出版社,1990:171-180.
[8]张慧杰.长江宜昌和宜宾江段鱼类资源的水声学初步调查[D].武汉:华中农业大学,2007.
[9]Traynor J J,Ehrenberg J E.Fish and standard sphere target sthrength measurements obtained with a dual-beam and split-beam eco-sounding system[J].Rapports et Proces-Verbauxdex Reunions,ICES,1990,189:325-335.
[10]Brede R,Kristensen F H,Solli H,et al.Target tracking with a split-beam echo sounder[J].Rapports et Proces-Verbauxdex Reunions,ICES,1990,189:254~263.
[11]刘立昕.前视声呐目标跟踪技术研究[D].哈尔滨:哈尔滨工程大学,2011.
[12]王晓峰.成像声呐波束形成新技术研究[D].哈尔滨:哈尔滨工程大学,2011.
[13]刘慧杰,王从锋,刘德富,等.双频识别声呐在鱼类资源调查中的应用进展[J].三峡大学学报(自然科学版),2015,37(3):28-34.
[14]刘歆璞,王丽卿,张宁,等.青草沙水库后生浮游动物群落结构及其与环境因子的关系[J].生态学杂志,2013,32(5):1238-1248.
[15]胡忠军,吴昊,陈立侨,等.长江口青草沙水库正式供水前的鱼类群落结构特征[J].水产学报,2012,36(8):1234-1241.
[16]王绍祥,高春霞,田思泉,等.青草沙水库中上层鱼类群落组成及多样性分析[J].上海海洋大学学报,2014,23(4):594-601.