| 深水型水库藻类功能组时空演替及生境变化的影响 |
| 摘要点击 3224 全文点击 1274 投稿时间：2012-09-22 修订日期：2013-03-21 |
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| 中文关键词 时空演替 藻类功能组 藻类生境变化 水体分层机制 深水型水库 |
| 英文关键词 spatiotemporal succession phytoplankton functional classification environment change water stratification deep-water reservoir |
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| 中文摘要 |
| 藻类功能分组是近年来生态学藻类研究的重要理论和方法.为了探明西安某深水型水源水库藻类功能组时空演替及生境变化的影响,于2011年8月起开展实验研究.研究采用现场在线监测和实验室分析相结合的方法.结果表明,水库藻类可分为10个功能组类别:B、D、P、X1、X3、F、G、J、LM、MP.其中,功能组B、P、F、X1、MP、D、J在水库中较为常见,X3、G、LM出现几率较低,功能组B、D、P、X1、X3的藻类数量占优.通过分析环境因子的变化对功能组时空演替的影响,发现水温为最主要的影响因子.水库藻类生长策略为:春季R/CR策略藻种→春末夏初CR/C策略藻种→夏末秋初C/CR/R/CS/S策略藻种→秋末及冬季CR/R策略藻种.此研究可为深水型水库安全取水提供理论支持. |
| 英文摘要 |
| Algae functional group has become an important theory and method of algae research in recent years. In order to explore the spatiotemporal succession of algae functional groups and the influence of environment change, water samples were collected in August, 2011 from a deep-water reservoir in Northwest China. The research combined the methods of on-line monitoring and laboratory analysis. The results showed that there were 10 functional groups of algae in the reservoir. They were designated as B, D, P, X1, X3, F, G, J, LM and MP. Wherein, the groups B, P, F, X1, MP, D and J were comparatively common functional groups, and the groups X3, G and LM were less common. The populations of groups B, D, P, X1 and X3 were larger than those of the others. Besides, the analysis of changes in the environment factors suggested that temperature was the most important factor influencing the spatiotemporal succession of algae functional groups. The strategy of algal growth followed the law: R/CR in spring →CR/C in late spring and early summer →C/CR/R/CS/S in late summer and early autumn →CR/R in late autumn and winter. The purpose of this article is to provide theoretical support for water withdrawal safety in deep-water reservoirs. |
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