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显岗水库是当地重要的饮用水水源.于2008年对南亚热带高产渔业水库——显岗水库的水文、水质和浮游植物的调查,分析了该水库敞水区浮游植物群落的结构与变化特征及其影响因子.显岗水库敞水区的总氮和总磷浓度较高,平均浓度分别为0.83mgL-1和0.046mgL-1;叶绿素a浓度的变化范围为11.02～59.34μgL-1.共检出浮游植物129种(属),隶属7门,其中绿藻占优势,共78种,其次为蓝藻和硅藻,分别为25种和16种;丰水期的浮游植物种类数量较枯水期的高.浮游植物丰度和生物量变化范围分别为0.16×108～7.49×108cellsL-1和0.63～5.09mgL-1,分别在5月、2月出现极大值,10月均具有极小值;丰水期的丰度较枯水期的高,生物量则相反.浮游植物丰度主要由蓝藻贡献,生物量则主要由硅藻贡献.拟柱孢藻Cylindrospermopsis sp.、假鱼腥藻Pseudoanabeana sp.、湖丝藻Limnthriox sp.、微小隐球藻Aphanocapsa delicatissima、针晶蓝纤维藻Dactylococcopsis rhaphidioides是主要的丰度优势种,在全年具有绝对的数量优势.小环藻Cyclotella meneghiniana、肘状针杆藻Synedna ulna、颗粒直链藻Melosira granulata、根管藻Rhizosolenia longiseta、曲壳藻Achnanthes exigua、微小隐球藻、假鱼腥藻、针晶蓝纤维藻是主要或常见的生物量优势种.根据统计分析,总磷、透明度、入库流量和降雨量是影响显岗水库敞水区浮游植物变化的主要非生物环境因子.图2表3参26
Xinggang Reservoir is an important source of drinking water in the country.In 2008, the survey of hydrology, water quality and phytoplankton in the southern subtropical high-yield fishery reservoir-Xinggang Reservoir analyzed the structure and variation characteristics of phytoplankton community in the open water area And its influencing factors.The concentrations of total nitrogen and total phosphorus in the open water area of Xinggang Reservoir were higher with the average concentrations of 0.83mgL-1 and 0.046mgL-1, respectively.The chlorophyll a concentration ranged from 11.02 to 59.34μgL-1 Phytoplankton 129 species (genus) were detected, belonging to 7 departments, of which algae dominated, a total of 78 species, followed by cyanobacteria and diatoms, respectively, 25 species and 16 species; abundance of phytoplankton species than dry season The range of phytoplankton abundance and biomass was 0.16 × 108 ~ 7.49 × 108cellsL-1 and 0.63 ~ 5.09mgL-1, respectively, with the maximum value in May and February and the minimum value in October. During the wet season, the abundance was higher than that in the dry season and the biomass was the opposite. The abundance of phytoplankton was mainly contributed by cyanobacteria and the biomass was mainly contributed by diatoms. Cylindrospermopsis sp., Pseudoanabeana sp. Limnthriox sp., Aphanocapsa delicatissima, needle Cyclotella meneghiniana, Synedna ulna, Melosira granulata, Rhizosolenia longiseta, Trichoderma longibrachiatum, Dactylococcopsis rhaphidioides are dominant dominant species throughout the year, Achnanthes exigua, Cryptococcus minutiae, Anabaena flos-aquae and Pinus nivalis were the main or common biomass dominant species.According to statistical analysis, total phosphorus, transparency, inflow flux and rainfall were the main influencing factors The main non-biological environmental factors of phytoplankton change in open water area