CAJ | 학술논문

2012年7月19~21日，9月14~16日及2013年5月12~14日，使用分裂波束科学鱼探仪（70 kHz）对辽宁省大伙房水库进行了鱼类资源声学调查，并选择上、中、下游站位进行了水文参数调查。分析库区内鱼类密度分布的季节变动，评估渔业资源现存量。结合水文参数讨论了鱼类垂直空间分布的季节变动。结果表明，春季鱼类主要在0~10 m、夏季在5~15 m、秋季在10~20 m水层分布。不同季节的水平分布，春季鱼类呈小集群在库区均匀分布；夏季主要集中在上、中游；秋季主要集中在下游分布。库区水温和溶解氧（ DO）随季节变化较大，鱼类分布受水温影响较大，主要在温跃层以浅水层分布。秋季库区水文条件相对其他季节稳定，无明显温跃层，鱼类回波成垂直分散状态，更适合声学调查和资源评估。9月库区资源现存量约为1522 t。
2012년7월19~21일，9월14~16일급2013년5월12~14일，사용분렬파속과학어탐의（70 kHz）대요녕성대화방수고진행료어류자원성학조사，병선택상、중、하유참위진행료수문삼수조사。분석고구내어류밀도분포적계절변동，평고어업자원현존량。결합수문삼수토론료어류수직공간분포적계절변동。결과표명，춘계어류주요재0~10 m、하계재5~15 m、추계재10~20 m수층분포。불동계절적수평분포，춘계어류정소집군재고구균균분포；하계주요집중재상、중유；추계주요집중재하유분포。고구수온화용해양（ DO）수계절변화교대，어류분포수수온영향교대，주요재온약층이천수층분포。추계고구수문조건상대기타계절은정，무명현온약층，어류회파성수직분산상태，경괄합성학조사화자원평고。9월고구자원현존량약위1522 t。
With a split-beam scientific echosounder(Simrad,EY60,70 kHz),we investigated the fishery resources in the Dahuo-fang Reservoir in Liaoning Province on July 19~21,September 14~16,2012 and May 12~14,2013. The main hydrogeological pa-rameters were surveyed in various stations distributed in the upper,middle and lower reaches. Moreover,the seasonal variation of fish density and distribution were analyzed to estimate the existing resource abundance in the reservoir,and the seasonal variability of verti-cally fish distribution was discussed with consideration to hydrological parameters. Results show that the fish mainly distributed at depth of 0~10 m in the spring,5~15 m in summer,and 10~20 m in autumn,respectively. The horizontal fish distribution was uniform as small clusters in spring,assembled in upper and middle reaches as separating individuals in summer and moved to lower reaches in au-tumn. The seasonal changes in water temperature and dissolved oxygen were obvious,and the fish distribution,which was mainly in the layer above the thermocline,was influenced by water temperature. The hydrogeological parameters were relative stable in autumn com-pared with the other seasons. There wasn't a thermocline in the reservoir and the fish echo was almost at single target echo state,which was suitable for acoustic survey and fishery resource assessment. The abundance of reservoir was estimated as 1 522 t in September.