湖泊科学
湖泊科學
호박과학
JOURNAL OF LAKE SCIENCES
2015年
5期
902-910
,共9页
张云%马徐发%郭飞飞%李建柱%熊邦喜
張雲%馬徐髮%郭飛飛%李建柱%熊邦喜
장운%마서발%곽비비%리건주%웅방희
金沙河水库%浮游植物%群落结构%环境因子%冗余分析
金沙河水庫%浮遊植物%群落結構%環境因子%冗餘分析
금사하수고%부유식물%군락결구%배경인자%용여분석
Jinshahe Reservior%phytoplankton%community structures%environmental factors%redundancy analyses
为探明长江中游大型水库水质状况，并为饮用水源安全保障提供科学依据，于20132014年按季节对湖北红安金沙河水库浮游植物群落结构及其多样性进行调查，并运用多元统计定量分析浮游植物群落结构与环境因子之间的关系.共鉴定出浮游植物8门94属216种，其中绿藻门为优势种群，其种类数占总物种数的51.39%，其次是硅藻门和蓝藻门.金沙河水库优势种随季节变化而变化，夏季以尖针杆藻(Synedra acus)的优势度最大(0.195)，秋季以小胶鞘藻(Phor-midium tenus)(0.180)和中华尖头藻(Raphidiopsis sinensia)(0.171)的优势度最大，冬季以具星小环藻(Cyclotella stellig-era)(0.220)和圆筒锥囊藻(Dinobryon cylindricum)(0.234)的优势度最大，春季则是链状曲壳藻(Achanthidum catenatum)成为绝对优势种(0.910)；金沙河水库浮游植物群落总的变化规律为夏季的硅藻门、蓝藻门和绿藻门，秋季的蓝藻门、绿藻门、硅藻门和隐藻门，向冬季的硅藻门和金藻门转变，春季则是硅藻门为绝对优势类群. Shannon-Wiener多样性指数和Pielou均匀度指数显示，浮游植物在秋季的多样性和均匀度较高，春季的多样性指数和均匀度指数显著低于其它季节，这是因为春季有绝对单一的优势物种，而秋季没有，且秋季的物种数最多，因此其Margalef丰富度指数也最高.将各季节优势种和经Pearson相关性分析筛选出的环境因子进行冗余分析，结果表明筛选的环境因子中磷酸盐、总磷和溶解氧浓度是影响金沙河水库浮游植物群落结构的主要环境因子.从藻类季节变化规律来看，金沙河水库夏、秋季水质污染程度较春、冬季严重；但从藻类丰度和多样性指数来看，春、夏季水质较秋、冬季污染严重.
為探明長江中遊大型水庫水質狀況，併為飲用水源安全保障提供科學依據，于20132014年按季節對湖北紅安金沙河水庫浮遊植物群落結構及其多樣性進行調查，併運用多元統計定量分析浮遊植物群落結構與環境因子之間的關繫.共鑒定齣浮遊植物8門94屬216種，其中綠藻門為優勢種群，其種類數佔總物種數的51.39%，其次是硅藻門和藍藻門.金沙河水庫優勢種隨季節變化而變化，夏季以尖針桿藻(Synedra acus)的優勢度最大(0.195)，鞦季以小膠鞘藻(Phor-midium tenus)(0.180)和中華尖頭藻(Raphidiopsis sinensia)(0.171)的優勢度最大，鼕季以具星小環藻(Cyclotella stellig-era)(0.220)和圓筒錐囊藻(Dinobryon cylindricum)(0.234)的優勢度最大，春季則是鏈狀麯殼藻(Achanthidum catenatum)成為絕對優勢種(0.910)；金沙河水庫浮遊植物群落總的變化規律為夏季的硅藻門、藍藻門和綠藻門，鞦季的藍藻門、綠藻門、硅藻門和隱藻門，嚮鼕季的硅藻門和金藻門轉變，春季則是硅藻門為絕對優勢類群. Shannon-Wiener多樣性指數和Pielou均勻度指數顯示，浮遊植物在鞦季的多樣性和均勻度較高，春季的多樣性指數和均勻度指數顯著低于其它季節，這是因為春季有絕對單一的優勢物種，而鞦季沒有，且鞦季的物種數最多，因此其Margalef豐富度指數也最高.將各季節優勢種和經Pearson相關性分析篩選齣的環境因子進行冗餘分析，結果錶明篩選的環境因子中燐痠鹽、總燐和溶解氧濃度是影響金沙河水庫浮遊植物群落結構的主要環境因子.從藻類季節變化規律來看，金沙河水庫夏、鞦季水質汙染程度較春、鼕季嚴重；但從藻類豐度和多樣性指數來看，春、夏季水質較鞦、鼕季汙染嚴重.
위탐명장강중유대형수고수질상황，병위음용수원안전보장제공과학의거，우20132014년안계절대호북홍안금사하수고부유식물군락결구급기다양성진행조사，병운용다원통계정량분석부유식물군락결구여배경인자지간적관계.공감정출부유식물8문94속216충，기중록조문위우세충군，기충류수점총물충수적51.39%，기차시규조문화람조문.금사하수고우세충수계절변화이변화，하계이첨침간조(Synedra acus)적우세도최대(0.195)，추계이소효초조(Phor-midium tenus)(0.180)화중화첨두조(Raphidiopsis sinensia)(0.171)적우세도최대，동계이구성소배조(Cyclotella stellig-era)(0.220)화원통추낭조(Dinobryon cylindricum)(0.234)적우세도최대，춘계칙시련상곡각조(Achanthidum catenatum)성위절대우세충(0.910)；금사하수고부유식물군락총적변화규률위하계적규조문、람조문화록조문，추계적람조문、록조문、규조문화은조문，향동계적규조문화금조문전변，춘계칙시규조문위절대우세류군. Shannon-Wiener다양성지수화Pielou균균도지수현시，부유식물재추계적다양성화균균도교고，춘계적다양성지수화균균도지수현저저우기타계절，저시인위춘계유절대단일적우세물충，이추계몰유，차추계적물충수최다，인차기Margalef봉부도지수야최고.장각계절우세충화경Pearson상관성분석사선출적배경인자진행용여분석，결과표명사선적배경인자중린산염、총린화용해양농도시영향금사하수고부유식물군락결구적주요배경인자.종조류계절변화규률래간，금사하수고하、추계수질오염정도교춘、동계엄중；단종조류봉도화다양성지수래간，춘、하계수질교추、동계오염엄중.
In order to evaluate the water quality of drinking water resource in the middle reaches of the Changjiang River, phyto-plankton community structures and their diversities were investigated seasonally from August, 2013 to April, 2014 in the Jinshahe Reservoir, Hubei Province. Meanwhile, multivariate statistics was used to analyze the relationships between phytoplankton assem-blages and environmental variables. The results showed that there were total of 216 species of phytoplankton belonging to 8 phyla and 94 genera. Chlorophyta which made up of 51. 39% of the total numbers of the species was the dominant group, followed by Bacillariophyta and Cyanophyta. Dominant species varied in different seasons. In summer, the ecological dominance of Synedra acus was the highest (0. 195), and in autumn, Phormidium tenus (0. 180) and Raphidiopsis sinensia (0. 171) had the highest ecological dominance. In winter, Cyclotella stelligera (0. 220) and Dinobryon cylindricum (0. 234) had the highest ecological dominance, and Achanthidum catenatum was the absolute dominant species with its ecological dominance of 0. 910. In general, Cyanophyta, Bacillariophyta and Chlorophyta were dominant groups in summer, and Cyanophyta, Bacillariophyta, Chlorophyta and Cryptophyta were dominant groups in autumn. Bacillariophyta and Chrysophyta were dominant groups in winter, and Bacillariophy-ta was the absolute dominant group in spring. Biodiversity indices showed that phytoplankton had higher values of the Shannon-Wiener diversity and the Pielou diversity in autumn, but the lowest values in spring because the absolute dominant species appeared in spring other than in autumn. In addition, the highest value of Margalef diversity occurred in autumn because of its larger number of species. Redundancy analysis was used to analyze the relationships between the dominant species in each season and the envi-ronmental factors filtered by Pearson correlation analysis. The results showed that phosphate, total phosphorus and water tempera-ture were the main environmental factors that have influenced phytoplankton assemblages. The reservoir had worse water quality in summer and autumn than in spring and winter which impacted on the variations of dominant groups of phytoplankton in different seasons, and had worse water quality in spring and summer than in autumn and winter which impacted on the cell abundance and biodiversity indices.
