紧水滩水库浮游轮虫群落与水质生态学评价  

Community structure of Rotifera and ecological assessment of water quality in Jinshuitan Reservoir

作　　者：徐杭英[1] 于海燕[1] 李共国[2] 

机构地区：[1]浙江省环境监测中心,杭州310015 [2]浙江万里学院,宁波315100

出　　处：《生态科学》2011年第5期535-540,共6页Ecological Science

摘　　要：2010年5月-2011年3月,调查了紧水滩水库(Ⅰ-Ⅵ站)浮游轮虫的群落及与水质之间的关系。共鉴定轮虫45种,污染指标种37种,其中寡污-β中污带、β中污带和β-α中污带污染指示种类分别占总指示轮虫的32.4%、35.1%和24.3%。优势种为螺形龟甲轮虫(Keratella cochlearis)、针簇多肢轮虫(Polyarthra trigla)和等刺异尾轮虫(Trichocerca stylata)。轮虫群落密度变幅为4.8～542.5ind.·L^(-1),平均135.7ind.·L^(-1);Shannon-Wiener多样性指数H′变幅为2.60～3.65,平均3.20:Q_(B/T)值变幅为0.83～2.50,平均1.39。Ⅰ-Ⅱ站的群落密度和多样性指数较低,Q_(B/T)值较大;而Ⅲ-Ⅵ站的群落密度和多样性指数均较高,Q_(B/T)值较小。Q_(B/T)值随着水体透明度的增大而明显下降。紧水滩水库属于寡污-中污(贫-中营养型)水体,其中Ⅰ-Ⅱ站为中污(中营养型),Ⅲ-Ⅵ站为寡污-β中污(贫营养型)水体。The community structure of Rotifera and ecological assessment of water quality were studied by investigating the speciescomposition, density seasonal dynamics, biodiversity and QB/T index in the sampling stations I -VI of Jinshuitan Reservoir, Zhejiang. During one year study, 45 species of Rotifera were found, and 37 species were pollution indicator species, of which oligo-βmesosaprobic, βmesosaprobic and β-amesosaprobic species accounting for 32.4%, 35.1% and 24.3% of the total indicator species respectively. The dominant species were Keratella cochlearis, Polyarthra trigla and Trichocerca similis. Community density of Rotifera ranged from 4.8 to 542.5 ind＇L^-1, with an average of 135.7 ind.L^-1; Shannon-Wiener index（H＇） ranged from 2.60 to 3.65, with an average of 3.20; QB/T value ranged from 0.83 to 2.50, with an average of 1.39. Rotifera density and H＇ value were lower, but QB/T value was higher in the stations I - II than in the stationsⅢ-VI. QB/T value decreased with the increasing of water transparency. Jinshuitan Reservoir was in oligo-mesosaprobic status, of which stations I -II were mesosaprobic, while stations Ⅲ-VI were oligo-βmesosaprobic.

关 键 词：轮虫群落 生态学评价 紧水滩水库 

分 类 号：X824[环境科学与工程—环境工程] Q14[生物学—生态学]