CAJ | 학술논문

根据2013年1—9月南极磷虾拖网调查数据，以单位捕捞努力量渔获量作为资源密度指标，分析南极磷虾资源空间分布特征和月间变化。结果表明，1—6月的月均单位捕捞努力量渔获量值相对稳定，7—9月逐月下降。渔区的平均单位捕捞努力量渔获量值以48．1小区最高，为（25．12±31．04） t／h，48．3小区最低，为（11．49±12．06）t／h；单位捕捞努力量渔获量值的波动幅度48．1小区大于48.2小区和48．3小区。广义可加模型筛选出的解释变量对南极磷虾空间分布的影响由大到小依次为：月份、经度、拖网深度、水深、纬度和表层水温。各因子的偏差解释率分别为16．82％、11．17％、3.98％、1．75％、1．54％和0．88％，所有因子对单位捕捞努力量渔获量的总偏差解释率为36．14％。本次调查的结果可为研究南极磷虾渔场形成机制和渔业管理提供参考。
근거2013년1—9월남겁린하타망조사수거，이단위포로노역량어획량작위자원밀도지표，분석남겁린하자원공간분포특정화월간변화。결과표명，1—6월적월균단위포로노역량어획량치상대은정，7—9월축월하강。어구적평균단위포로노역량어획량치이48．1소구최고，위（25．12±31．04） t／h，48．3소구최저，위（11．49±12．06）t／h；단위포로노역량어획량치적파동폭도48．1소구대우48.2소구화48．3소구。엄의가가모형사선출적해석변량대남겁린하공간분포적영향유대도소의차위：월빈、경도、타망심도、수심、위도화표층수온。각인자적편차해석솔분별위16．82％、11．17％、3.98％、1．75％、1．54％화0．88％，소유인자대단위포로노역량어획량적총편차해석솔위36．14％。본차조사적결과가위연구남겁린하어장형성궤제화어업관리제공삼고。
According to the data of Antarctic krill (Euphausia superba) trawl survey from January to September in 2013 ,the temporal and spatial distribution of Antarctic krill resources were analyzed with the index of CPUE .The results showed that monthly average catch per unit effort (CPUE) was relatively stable from January to June ,but declined after July .The maximum(25 .12 ± 31 .04) t/h average CPUE was observed in subarea 48 .1 ,and the minimum (11 .49 ± 12 .06) t/h in subarea 48 .3;whereas ,the change in net CPUE was greater in subarea 48 .1 than in 48 .2 and 48 .3 .The results of stepwise GAM showed that the important explanatory variables affecting the spatial distribution of Antarctic krill were month ,longitude ,trawling depth ,sea bottom depth ,latitude and surface sea temperature (SST) ,and the deviance explanation by these explanatory variables was accounted for 36 .14% in total .