CAJ | 학술논문

2011年珠江开始实行禁渔期制度。该研究采用 Simrad EY60鱼探仪，分别于2010年5月19日和2011年5月22日对珠江西江段进行了走航式探测。结果显示，珠江禁渔期期间西江段鱼类资源密度增加，2010年和2011年鱼类平均密度分别为0.0513尾·m -3和0.1068尾·m -3，根据渔获物调查数据，推算增幅分别为广东鲂（Megalo-brama terminalis）47.85％、赤眼鳟（Squaliobarbus curriculus）18.54％、鲮（Cirrhina moitorella）10.87％和鳊（Parabra-mis pekinensis）6.25％；两年西江段深水区域鱼类密度均较大，尤其是水底结构为凹形区域，鱼类有明显的聚集现象；浅水区域且底部较平整的水域，鱼类分布分散且密度较低；垂直分布方面，鱼类主要分布4~10 m 中下层水层。珠江禁渔期的实施，在一定程度上保护了鱼类的产卵亲体繁殖，对鱼类资源数量的补充起到了增殖作用，同时在很大程度上护养了鱼类的自然生长，起到了资源增重作用。
2011년주강개시실행금어기제도。해연구채용 Simrad EY60어탐의，분별우2010년5월19일화2011년5월22일대주강서강단진행료주항식탐측。결과현시，주강금어기기간서강단어류자원밀도증가，2010년화2011년어류평균밀도분별위0.0513미·m -3화0.1068미·m -3，근거어획물조사수거，추산증폭분별위엄동방（Megalo-brama terminalis）47.85％、적안준（Squaliobarbus curriculus）18.54％、릉（Cirrhina moitorella）10.87％화편（Parabra-mis pekinensis）6.25％；량년서강단심수구역어류밀도균교대，우기시수저결구위요형구역，어류유명현적취집현상；천수구역차저부교평정적수역，어류분포분산차밀도교저；수직분포방면，어류주요분포4~10 m 중하층수층。주강금어기적실시，재일정정도상보호료어류적산란친체번식，대어류자원수량적보충기도료증식작용，동시재흔대정도상호양료어류적자연생장，기도료자원증중작용。
Closed fishing season was initially implemented in Pearl River in 2011. We used a Simrad EY60 echo-sounder with 120 kHz split-beam transducer to survey the Xijiang section of Pearl River. The results show that during the closed season,the density of fish resources was increasing,and the average fish densities were 0. 051 3 ind·m - 3 and 0. 106 8 ind·m - 3 in 2010 and 2011,respec-tively. According to the data of catches,the increases were deduced as follows:Megalobrama terminalis 47. 85% ,Squaliobarbus cur-riculus 18. 54% ,Cirrhina moitorella 10. 87% and Parabramis pekinensis 6. 25%. The deep water had higher fish density than shallow water,especially that fish obviously aggregated in concave region. The fish mainly distributed at depth of 4 ~ 10 m. The implementa-tion of closed fishing season,to some extent,protects breeding of spawning stocks and supplements fish resources as well as mainte-nances natural growth of fishes.