摘要
[目的]探究影响红枫湖水库(支流宽谷型)和乌江渡水库(干流峡谷型)的浮游植物密度的主要环境因素及其影响强弱顺序,为合理开发利用这2座不同类型水库水资源提供理论依据。[方法]于2005年枯水期、丰水期和平水期对上述2座水库进行浮游植物群落特征的生态调查和水质理化指标测定,应用灰关联分析方法进行数据分析,在水温、pH值、透明度、溶解氧等7项环境因素中找出影响浮游植物密度的主要因素。[结果]红枫湖水库和乌江渡水库的关联度均大于0.500,各理化因子对浮游植物密度影响大小的顺序,红枫湖水库为:透明度>化学耗氧量>水温>pH值>总氮>溶解氧>总磷;乌江渡水库为:溶解氧>水温>pH值>总氮>化学耗氧量>透明度>总磷。[结论]该7项环境因子对2座水库浮游植物密度均有很大影响,但最主要的影响因子不同,其中透明度是影响红枫湖水库浮游植物密度的首要因子,其次为化学耗氧量、水温;乌江渡水库则依次以溶解氧、水温、pH值为主要影响因子。
[Objective] The theoretic reference for the reasonable development and utilization of the water resource of two reservoirs： Hongfenghu Reservoir（broad valley style） and Wujiangdu Reservoir（gorge style） was provided through the research on the main ecological environmental factor such as phytoplankton community and its efficiency.[Method] The character of phytoplankton community and the physicochemical indicator of water-body of two reservoirs in three phases： dry season,wet season and normal season,in the chemical oxygen demand of water in 2005,was investigated and measured,respectively,which data would be analyzed with the method of grey relationship analysis,and main factor affecting the density of phytoplankton in water-body was found out.[Result] The relation degree in two types of reservoirs was more than 0.500 and the order of the factor affecting the density of phytoplankton was transparency demand of oxygen water temperature pH value total N dissolve oxygen total P in Hongfenghu Reservoir and dissolve oxygen water temperaturepH valuetotal Ndemand of oxygentransparencytotal P in Wujiangdu Reservoir.[Conclusion] All of seven factors greatly affected the density of phytoplankton in two types of reservoirs.However,the most important factor was different,and in Hongfenghu Reservoi the transparency was key point,then demand of oxygen,water temperature and in Wujiangdu Reservoir the order of main factor affecting it was dissolve oxgen,water temperature,pH value.
出处
《安徽农业科学》
CAS
北大核心
2011年第5期2848-2850,共3页
Journal of Anhui Agricultural Sciences
基金
贵州省科学技术基金(黔科合J字[2005]2024号
黔科合SY[2010]3012号)
贵州省优秀科技教育人才省基金(黔省专合字J字[2005]331号)
贵阳市社会发展攻关项目(2008筑科农合同字第5-3号)
关键词
水库
浮游植物密度
环境因子
灰关联
Hongfenghu Reservoir
Wujiangdu Reservoir
Density of phytoplankton
Environment factor
Grey relationship
