军山湖鱼类资源调查与渔业结构调整效益分析  

Investigation of Fish Resources and Benefit Analysis of Fishery Structure Adjustment in Junshan Lake

作　　者：邓宏奎 付辉云[1] 陈文静[1] 张燕萍[1] 章海鑫[1] 余智杰[1] 万锦涛 李涵 DENG Hong-kui;FU Hui-yun;CHEN Wen-jing;ZHANG Yan-ping;ZHANG Hai-xin;YU Zhi-jie;WAN Jin-tao;LI Han(Jiangxi Fisheries Research Institute,Nanchang 330039,China)

机构地区：[1]江西省水产科学研究所,江西南昌330039

出　　处：《江西农业学报》2021年第12期91-98,共8页Acta Agriculturae Jiangxi

基　　金：江西现代农业科研协同创新项目(JXXTCX201602-04);江西省重大科技项目(20161ACF60020)。

摘　　要：通过2013和2019年2次军山湖渔业资源调查,比较了渔业结构调整前后的效益差异。结果表明:(1)2013与2019年2次调查军山湖均有鱼类53种,隶属7目12科,其中鲤科鱼类36种,较历史记录少27种;2019年鲢鳙、自然经济鱼类和小型鱼类产量分别占总产量的89.14%、8.90%和1.96%,较2013年分别降低了25.00万、6.34万和5.06万kg。(2)2019年肉食性鱼类(鳜、翘嘴鲌)、鲫和黄颡鱼等高附加值鱼类产量较2013年具有显著性上升;小型鱼类优势种较2013年减少了1种,数量百分比低于0.1%的种类由2013年的8种减少为3种。(3)2019年水体COD_(Mn)、TP均显著低于2013年,TN春季显著低于2013年,其余季节均稳定。因此,渔业结构调整能够稳定地改善军山湖渔业资源结构,保护水体渔业环境和提高渔业价值。Based on the twice investigation of the Junshan Lake fishery resources in 2013 and 2019,the difference of benefit before and after the fishery structure adjustment was compared.The results showed that:(1)In 2013 and 2019,there were 53 species of fish in Junshan lake,belonging to 7 orders and 12 families,including 36 species of Cyprinidae,27 species less than the historical record.In 2019,the production of Hypophthalmichthys molitrix and Hypophthalmichthys nobilis,natural economic fish and small fish accounted for 89.14%,8.90%and 1.96%of the total production respectively,which decreased by 250.0,63.4 and 50.6 thousand kg compared with the production of 2013.(2)In 2019,the production of predacity fish(Siniperca chuatsi,Culter alburnus),Carassius auratus,Pelteobagrus fulvidraco and other high value-added fish increased significantly compared with 2013.The dominant species of small fish decreased by one species compared with 2013,and the number of species with a percentage of less than 0.1%decreased from eight in 2013 to three.(3)The COD_(Mn) and TP in 2019 was significantly lower than that in 2013,and the TN was significantly lower in spring in 2019 than that in 2013 and performed steadily in others seasons.The results show that the fishery structure adjustment can steadily improve the fishery resources structure of Junshan Lake,protect the water fishery environment and improve the fishery value.

关 键 词：军山湖 鱼类资源、渔业结构 效益分析 

分 类 号：S932.4[农业科学—渔业资源]