高原水库富营养水体浮游动物对汞的富集特征  

Characteristic of Hg accumulation by zooplankton in plateau eutrophic reservoir

作　　者：龙胜兴[1,2] 何天容[1] 陈椽[3] 夏品华[3] 曾玲霞[1] 董娴[3] 刘之威[2] LONG Sheng-xing;HE Tian-rong;CHEN Chuan;XIA Pin-hua;ZENG Ling-xia;DONG Xian;LIU Zhi-wie(Key Laboratory of Karst Environment and Geohazard Prevention, Ministry of Education, Guizhou University, Guiyang 550003, China;College of Science and Technology, Jinan University, Guangzhou 510000, China;Guizhou Normal University, Guiyang 550001,China)

机构地区：[1]贵州大学喀斯特环境与地质灾害重点实验室,贵州贵阳550003 [2]暨南大学生命科学技术学院,广东广州510000 [3]贵州师范大学,贵州贵阳550001

出　　处：《中国环境科学》2017年第1期263-270,共8页China Environmental Science

基　　金：国家自然科学基金项目(41363007);贵州省科学技术基金(20132296);贵州大学喀斯特重点实验室开放基金项目(Karst-1604)

摘　　要：以贵州省百花湖水库,红枫水库,阿哈水库、以及威宁典型湿地草海为研究对象,收集水库、湿地中大型的浮游动物,通过测定其总汞(THg)和甲基汞(MeHg)含量,并结合水体中相关水质参数,探讨高原喀斯特富营养化水库中浮游动物对汞及甲基汞的富集特征.结果表明:浮游动物体的THg和MeHg浓度变化范围分别为58.91-345.85ng/g及7.18-112.20ng/g,富营养化水平与浮游动物体THg含量存在明显的正相关性(P<0.05),主要原因由于高喀斯特深水库,TP是限制水体富营化程度的关键因子,其间接影响浮游动物体对总汞的富集.在湿地环境,植被结构是影响浮游动物对汞污染物富集及分布差异明显的主要因子,其因是湿地水体植被结构对汞污染物迁移影响有明显差异.浮游动物对汞污染物富集有明显的季节差异,浮游动物对甲基汞富集特征是随着生物个体的体长,生物量的增加而增加.Larger zooplankton were collected from Baihua Lake reservoir,Hongfeng Lake reservoir,Aha reservoir andCaohai wetland,Hg and MeHg of Zooplankton and water quality parameter were determined in order to understandcharacteristic of Hg and MeHg accumulation by zooplankton in plateau eutrophic reservoir.Our study showed THg andMeHg concentration in zooplankton changed from58.91to345.85ng/g dry weight and7.18to112.20ng/g dry weight,positively correlation THg concentration in zooplankton with eutrophic status(p<0.05),because of TP was importancefactor limited water eutrophic in plateau deep water reservoir,and indirect impacted THg accumulation by zooplankton.Vegetation composewas importance factor to effect Hg accumulationin zooplankton,and leaded to Hg in zooplanktonobvious different distribution in wetland,because of Vegetation community retard move of Hg contaminant significantdifferent.Hg in zooplankton was significant different in different season,and MeHg in zooplankton increased withzooplankton’s individual length and biomass increased.

关 键 词：浮游动物 汞 甲基汞 

分 类 号：X835[环境科学与工程—环境工程]