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引用本文:胡月敏,李秋华,朱冲冲,欧腾,李红梅,陈峰峰,高永春,骆兰.基于功能群对比分析黔中普定水库和桂家湖水库浮游植物群落结构特征.湖泊科学,2018,30(2):403-416. DOI:10.18307/2018.0212
HU Yuemin,LI Qiuhua,ZHU Chongchong,OU Teng,LI Hongmei,CHEN Fengfeng,GAO Yongchun,LUO Lan.Contrasting phytoplankton structure based on functional groups of Puding Reservoir and Guijiahu Reservoir in the central of Guizhou Province. J. Lake Sci.2018,30(2):403-416. DOI:10.18307/2018.0212
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基于功能群对比分析黔中普定水库和桂家湖水库浮游植物群落结构特征
胡月敏1, 李秋华1, 朱冲冲1, 欧腾1, 李红梅1, 陈峰峰2, 高永春3, 骆兰3
1.贵州师范大学贵州省山地环境信息系统和生态环境保护重点实验室, 贵阳 550001;2.贵州医科大学, 贵阳 550003;3.贵州省水文水资源局, 贵阳 550002
摘要:
为了解黔中地区浮游植物群落结构特征,同时为了研究功能群对水环境的指示,选取黔中2座典型水库——普定水库和桂家湖水库,分别于2015年的枯水期(1月)和丰水期(8月)进行浮游植物采样分析.结果表明:(1)2座水库营养盐无显著性差异,水动力学参数(水温、混合层深度、透明度、真光层深度、水柱相对稳定性、光的可获得性)存在显著性差异.(2)普定水库共归类出18个功能类群,桂家湖水库共归类出15个功能类群.普定水库优势功能群水期分布特征:枯水期LO→丰水期B+P;桂家湖水库优势功能群水期分布特征:枯水期B+J+Y→丰水期B+J.垂直层面上,普定水库枯水期以甲藻组成的优势功能群LO在三岔街采样点表层藻类生物量达到峰值(18529 μg/L),远高于中层和底层水体以及其他采样点,与该点水文特性以及组成LO的甲藻特征有关.丰水期以硅藻组成的功能群P在小河采样点的中层藻类生物量最大(2741 μg/L),远高于该点的表层水体及其他采样点,与P类群耐受低光有关.而桂家湖水库由于面积小、水位浅且少有人为干扰,故样点间环境因子差异小,整个水体优势功能群分布高度一致.(3)经RDA分析,水动力学参数、营养盐、pH和电导率是影响普定水库浮游植物群落分布的主要环境因子;桂家湖水库仅水动力学参数(水温和水柱相对稳定性)是主要因子.(4)从浮游植物功能群适宜生境来看,普定水库为富营养水体,桂家湖水库为中到富营养水体.由分析得出隶属于不同水域的2座水库浮游植物群落结构及水环境均存在显著性差异.
关键词:  功能群  时空分布  普定水库  桂家湖水库  浮游植物  群落结构
DOI:10.18307/2018.0212
分类号:
基金项目:国家自然科学基金项目(U1612442)、贵州省水利厅项目(KT201401)、贵州省科技厅项目(黔科合人字(2015)10号)和贵州省教育厅项目(黔教合KY[2017]032)联合资助.
Contrasting phytoplankton structure based on functional groups of Puding Reservoir and Guijiahu Reservoir in the central of Guizhou Province
HU Yuemin1, LI Qiuhua1, ZHU Chongchong1, OU Teng1, LI Hongmei1, CHEN Fengfeng2, GAO Yongchun3, LUO Lan3
1.Key Laboratory for Information System of Mountainous Area and Protection of Ecological Environment of Guizhou Province, Guizhou Normal University, Guiyang 550001, P. R. China;2.Guizhou Medical University, Guiyang 550003, P. R. China;3.Guizhou Province Hydrology and Water Resources Bureau, Guiyang 550002, P. R. China
Abstract:
In order to explore the phytoplankton community structure characteristics in the Central of Guizhou Province and the indication of functional groups on water environment, Puding Reservoir and Guijiahu Reservoir were selected and phytoplankton samples were collected in different depths in the dry (January 2015) and wet (August 2015) seasons. The results showed that:(1) There was no significant difference in nutrients but significant difference in hydrodynamic conditions (water temperature, mixing depth, transparency, true optical depth, water column relative stability and the availability of light) between the two reservoirs. (2)There were 18 and 15 functional groups of phytoplankton in Puding Reservoir and Guijiahu Reservoir, respectively. The obvious distribution patterns in Puding Reservoir:LO in the dry season and B+P in the wet season. The distribution patterns in Guijiahu Reservoir:B+J+Y in the dry season and B+J in the wet season. On the vertical level in Puding Reservoir the biomass of LO reached the peak (18529 μg/L) in the surface water of Sanchajie, which was much higher than the middle and bottom and other sampling points. This is related to the hydrological properties of Sanchajie and the characteristics of Dinophyta. The biomass of algae in the middle layer of the river(2741 μg/L) which was much higher than that of the surface water and other samples at Xiaohe which was related to P the low tolerance of light. The distribution of the dominant function groups of the Guijiahu Reservoir was highly consistent, it most related to the small water area the shallow water level and few human disturbance, resulting in small environmental difference between the samples. (3)Redundancy analysis revealed that hydrodynamic parameters, nutrient, pH and conductivity were the key factors driving variation in phytoplankton groups in Puding Reservoir. The hydrodynamic parameters (water temperature and RWCS) were the key factors driving variation in phytoplankton groups in Guijiahu Reservoir. (4) The phytoplankton functional group's suitable habitat showed that the Puding Reservoir was eutrophic while the Guijiahu Reservoir was mesotrophic to eutrophication. The result showed that there were significant difference in phytoplankton community structure and water environment between the two reservoirs belonging to different water.
Key words:  Functional groups  spatial and temporal distribution  Puding Reservoir  Guijiahu Reservoir  phytoplankton  community structure
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