作　　者： ; ; ; (张玉明）;

机构地区： 浙江省淡水水产研究所

出　　处： 《生态学杂志》 2012年第11期2865-2871,共7页

摘　　要： 于2010年5月、8月和11月对新昌长诏水库浮游植物群落进行了调查,运用Shannon多样性指数(H)、Simpson多样性指数(D)、Margalef丰富度指数(M)及Pielou均匀度指数(J)分析了浮游植物种群的多样性,并结合水质理化指标对长诏水库的富营养化程度及水质状况进行了综合评价。结果显示:长诏水库浮游植物有6门26属(种),其中,绿藻门10属(种),硅藻门9属(种),蓝藻门4属(种),隐藻门1属,甲藻门1属,黄藻门1属。浮游植物的丰度为5.73×105～7.73×105ind·L-1,平均为(6.71±0.81)×105ind·L-1;生物量为0.73～1.03mg·L-1,平均为(0.83±0.12)mg·L-1。在水平分布上,蓝藻门、硅藻门和绿藻门的丰度在各采样点中均较高;在季节分布上,硅藻门、绿藻门、蓝藻门分别在春季、夏季、秋季占绝对优势。总体上,浮游植物丰度和生物量在水库入水口较高,出水口较低。水库浮游植物的多样性较差,水质受到较重污染,且主要为氮、磷污染;富营养化程度为中-富营养化水平。 An investigation was conducted on the community structure of phytoplankton in Changzhao Reservoir of Zhejiang Province in May,August,and November,2010,and the diversity of the community species was analyzed by using Shannon diversity index,Simpson diversity index,Margalef diversity index,and Pielou evenness index.Meanwhile,the water quality of the Reservoir was evaluated based on the physical-chemical parameters.The identified phytoplankton species in the Reservoir belonged to 26 species or genera of 6 phyta,consisting of Cyanophyta（4 species or genera）,Cryptophyta（1 genus）,Pyrrophyta（1 genus）,Bacillariophyta（9 species or genera）,Chlorophyta（10 species or genera）,and Xanthophyta（1 genus）.The abundance of the phytoplankton ranged from 5.73×105 to 7.73×105 ind·L-1,with an average of（6.71±0.81）×105 ind·L-1,and the biomass ranged from 0.73 to 1.03 mg·L-1,with an average of（0.83±0.12） mg·L-1.At all sampling sites,the species of Cyanophyta,Bacillariophyta,and Chlorophyta had high abundance in each season,whereas the species of Bacillariophyta,Chlorophyta,and Cyanophyta had the highest abundance in spring,summer,and autumn,respectively.Overall,the abundance and biomass of the phytoplankton community were higher at the inlet but lower at the outlet of the Reservoir.The diversity of the phytoplankton community in the Reservoir was lower,and the water was heavily polluted,with high concentrations of nitrogen and phosphorus and middle-rich nutrition grade of eutrophication.

关 键 词： 丰度 生物量 优势度 生物多样性指数 富营养化

领　　域： [生物学]