陡山水库浮游生物资源调查评价及鱼产力估算  

Investigation and evaluation of plankton resources and estimation of fish productivity of Doushan Reservoir

作　　者：丁玉婷 周彦锋[1,2] 张希昭 周依帆 郭世越 薛俊建 殷方凯 尤洋[1,2] DING Yuting;ZHOU Yanfeng;ZHANG Xizhao;ZHOU Yifan;GUO Shiyue;XUE Junjian;YIN Fangkai;YOU Yang(Wuxi Fisheries College,Nanjing Agriculture University,Wuxi 214081,China;Freshwater Fisheries Research Center of Chinese Academy of Fishery Sciences,Wuxi 214081,China;Doushan Reservoir Management Center,Junan 276612,China;Provincial Level Protosalanx hyalocranius Breeding Farm,Junan 276612,China)

机构地区：[1]南京农业大学无锡渔业学院,江苏无锡214081 [2]中国水产科学研究院淡水渔业研究中心,江苏无锡214081 [3]莒南县陡山水库管理中心,山东莒南276612 [4]莒南省级大银鱼良种场,山东莒南276612

出　　处：《海洋湖沼通报（中英文）》2024年第5期162-170,共9页Transactions of Oceanology and Limnology

基　　金：财政部和农业农村部:国家现代农业产业技术体系资助(CARS-46);中国水产科学研究院中央级公益性科研院所基本科研业务费专项资金资助(2023TD65)。

摘　　要：于2020—2021年枯水期和丰水期对陡山水库浮游生物资源、水体营养状况和鱼产力进行了调查分析和评估。共鉴定出浮游植物8门45种(含变种),以绿藻、硅藻和蓝藻为主;浮游动物33种,以原生动物和轮虫为主。群落特征分析显示,枯水期的浮游植物硅藻门密度和生物量占比均超过85%,藻相为“硅藻型”,丰水期蓝藻门密度和生物量占比均超过70%,藻相为“蓝隐藻型”;两个时期原生动物密度占比均大于61%,轮虫生物量占比均大于76%,小型浮游动物占比较高。营养状况综合评价结果为:水体营养类型为中营养~轻度富营养,污染等级为中~重污染;CCA分析结果显示,浮游生物的主要环境影响因子是SD、DTN、TN和CODMn;据饵料生物法估算,浮游生物所能提供的鱼产力为308.29 kg/hm^(2)。本文较完整地记录了水生生物资源及水环境营养现况,旨在为后续陡山水库水环境的维护和渔业的生态化管理提供必要的参考。The plankton resources,water nutritional status and fish productivity of Doushan Reservoir were investigated,analyzed and evaluated during the dry and wet periods from 2020 to 2021.A total of 45 species(including variants)of 8 phyla of phytoplankton,mainly green algae,diatoms and cyanobacteria;and 33 species of zooplankton,mainly protozoa and rotifers were identified.The analysis of community characteristics showed that the density and biomass of diatoms accounted for more than 85%in the dry period and the algae phase was diatoms type;the density and biomass of Cyanophyta accounted for more than 70%in the wet period and the algae phase was cyanophyte and cryptophyte type;the protozoan density accounted for more than 61%in the two periods,the rotifer biomass accounted for more than 76%and the small zooplankton accounted for a relatively high proportion.The nutritional type of the water was moderate to mild eutrophicated,and the pollution level was moderate to heavy polluted.CCA analysis showed that the main environmental impact factors of plankton were SD,DTN,TN and CODMn.According to the estimation of bait biology method,the fish productivity provided by plankton was 308.29 kg/hm^(2).These findings are relatively complete records of the current status of aquatic biological resources and their water environment nutrition,which should aid to providing a necessary reference for the subsequent maintenance of the water environment of Doushan Reservoir and the ecological management of fishery.

关 键 词：陡山水库 浮游生物 水体营养状况 鱼产力 

分 类 号：S932[农业科学—渔业资源]