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引用本文:文航,蔡佳亮,苏玉,王东伟,黄艺.滇池流域入湖河流丰水期着生藻类群落特征及其与水环境因子的关系.湖泊科学,2011,23(1):40-48. DOI:10.18307/2011.0107
WEN Hang,CAI Jialiang,SU Yu,WANG Dongwei,HUANG Yi.Characteristics of periphytic algal community and its relationship with aquatic environmen-tal factors in streams of Lake Dianchi watershed in wet season. J. Lake Sci.2011,23(1):40-48. DOI:10.18307/2011.0107
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滇池流域入湖河流丰水期着生藻类群落特征及其与水环境因子的关系
文航, 蔡佳亮, 苏玉, 王东伟, 黄艺
北京大学环境科学与工程学院, 北京 100871
摘要:
着生藻类是重要的水环境指示生物, 其物种组成、生物密度以及多样性指数等群落特征被广泛用于监测和评价人为活动干扰对水生生态系统所造成的影响.本文根据滇池流域29条人湖河流2009年7-8月着生藻类调查数据, 以及2008年9月至2009年8月逐月水环境指标监测数据, 通过运用等级聚类分析、因子分析和典型对应分析, 来探讨滇池流域入湖河流丰水期着生藻类群落特征与水环境因子的关系及其空间分布格局, 以期为滇池流域水环境质量评价和流域综合管理提供基础.结果表明, 滇池流域人湖河流在调查期间共检出着生藻类5门18科24属, 其中硅藻门7科10属, 绿藻门6科7属, 蓝藻门2科4属, 金藻门2科2属, 裸藻门l科l属, 丰水期着生藻类的群落结构以硅藻门的舟型藻属为优势属;滇池流域入湖河流丰水期着生藻类生物密度、舟型藻属生物密度及其百分比的空间分布格局均为流域北部入湖河流 >南部 >东部;TN、NH3-N和TP等无机营养盐指标是影响滇池流域入湖河流丰水期着生藻类群落特征的主要水环境因子, 其综合污染状况的空间分布格局也为流域北部人湖河流 >南部 >东部。
关键词:  滇池流域  着生藻类  水环境因子  空间分布格局  丰水期
DOI:10.18307/2011.0107
分类号:
基金项目:国家水体污染控制与治理科技重大专项"流域水生态功能分区与质量目标管理技术"项目(2008ZX0526-002-06)资助
Characteristics of periphytic algal community and its relationship with aquatic environmen-tal factors in streams of Lake Dianchi watershed in wet season
WEN Hang, CAI Jialiang, SU Yu, WANG Dongwei, HUANG Yi
College of Environmental Sciences and Engineering, Peking University, Beijing 100871, P.R.China
Abstract:
Periphytic algae are important biological indicators in the water environment.ITieir species exposition, density, and diversity are widely used for monitoring and evaluating the impact of human activities on the aquatic ecosystem.Tlie survey data of periphytic algae during July and August of 2009 and monthly physical-chemical parameters of the 29 streams of Lake Dianchi (LD) watershed fiom September 2008 to August 2009 were analyzed.Hierarchical cluster analysis, factor analysis, and canonical come-spondence analysis were used to relate the characteristics of periphytic algal community to aquatic environmental factors and their spatial pattern in order to provide controlling objectives for integrated LD watershed management.A total of 5 phylum, 18 families, and 24 genera of periphytic algae were identified, including 10 genera in 7 families of Baciliariophyta, 7 genera in 6 families of Chlorophyta, 4 genera in 2 families of Cyanophyta, 2 genera in 2 families of Chrysophyta, and 1 genus in 1 family of Euglenophyta.Among them, Navicula(BaciWaiiophyta) was the dominant genus.The spatial patterns of periphytic algal density, and Navicula density and abundance in the wet season were greatest in streams flowing to north LD, followed by those flowing to south LD, and then by those to east LD.TN, NH3-N, and TP were the key aquatic environmental factors affecting the characteristics of periphytic algal community in the wet season.Tlie spatial pattern of integrated pollution of TN, NH3-N, and TP was also the greatest in streams flowing to north LD, followed by those flowing to south LD, and then by those to east LD.
Key words:  Lake Dianchi watershed  periphytic algae  aquatic environmental factor  spatial pattern  wet season
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