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引用本文:张鑫,易齐涛,谢凯,张思亮,余艳霞,张银.淮南采煤塌陷湖泊浮游植物优势种的营养动力学.湖泊科学,2018,30(3):713-722. DOI:10.18307/2018.0313
ZHANG Xin,YI Qitao,XIE Kai,ZHANG Siliang,YU Yanxia,ZHANG Yin.Nutrient kinetics of dominant species of phytoplankton in the artificial lakes formed from land subsidence by mining activities in the Huainan coalmine subsidence areas. J. Lake Sci.2018,30(3):713-722. DOI:10.18307/2018.0313
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淮南采煤塌陷湖泊浮游植物优势种的营养动力学
张鑫1, 易齐涛1,2, 谢凯3, 张思亮1, 余艳霞1, 张银1
1.安徽理工大学地球与环境学院, 淮南 232001;2.中国科学院生态环境研究中心, 北京 100085;3.安徽理工大学数学与大数据学院, 淮南 232001
摘要:
在淮南潘谢矿区选取3个营养盐结构差异较大的塌陷湖泊,于2014-2015年4个季度分别对浮游植物群落结构组成进行调查,选取3个湖泊中的优势种(属)具尾蓝隐藻(Chroomonas caudata)、链形小环藻(Cyclotella catenata)和伪鱼腥藻(Pseudanabaena sp.)作为研究对象,设置不同的氮(N)、磷(P)浓度梯度进行营养动力学培养实验,并结合Monod方程,获得3个藻种在不同营养盐限制下的营养动力学参数.N限制下具尾蓝隐藻、小环藻和伪鱼腥藻的最大生长速率(μmax)和半饱和常数(Ks)分别为:0.66 d-1、1.66 mg/L;0.37 d-1、1.06 mg/L;0.71 d-1、2.26 mg/L;P限制下它们的μmaxKs则分别为:0.51 d-1、0.023 mg/L;0.31 d-1、0.035 mg/L;0.90 d-1、0.015 mg/L.综上所述,在N充足时,伪鱼腥藻能够在竞争中形成优势,同时在P限制情况下易成为优势种,从营养动力学的角度揭示了其在塌陷湖泊中占据优势的营养盐动力学机制.研究结果可以为沉陷区水域开发利用和营养盐管理提供科学依据.
关键词:  采煤塌陷区  塌陷湖泊  浮游植物  营养动力学  营养限制
DOI:10.18307/2018.0313
分类号:
基金项目:国家自然科学基金项目(51579001,51504012)和中国博士后科学基金项目(2014M560127)联合资助.
Nutrient kinetics of dominant species of phytoplankton in the artificial lakes formed from land subsidence by mining activities in the Huainan coalmine subsidence areas
ZHANG Xin1, YI Qitao1,2, XIE Kai3, ZHANG Siliang1, YU Yanxia1, ZHANG Yin1
1.School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, P. R. China;2.Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China;3.School of Mathematics and Big Data, Anhui University of Science and Technology, Huainan 232001, P. R. China
Abstract:
Three lakes in the Huainan Panxie coalmine areas, with different nutrient ratio, were investigated for their phytoplankton communities in four seasons from 2014 to 2015. Three dominant species (genera) of phytoplankton, including Chroomonas caudata, Cyclotella catenata and Pseudanabaena sp., were selected to obtain their nutrient kinetics by a number of incubation experiments with limitation for individual nitrogen (N) and phosphorus (P). Under N limitation conditions, the maximum specific growth and half-saturated constant for the three species of Chroomonas caudate, Cyclotella catenata and Pseudanabaena sp. were 0.66 d-1 and 1.66 mg/L, 0.37 d-1 and 1.06 mg/L, 0.71 d-1 and 2.26 mg/L, respectively; with respect of P limitation conditions, they were 0.51 d-1 and 0.023 mg/L, 0.31 d-1 and 0.035 mg/L, 0.90 d-1 and 0.015 mg/L, respectively. Especially, the Pseudanabaena sp. takes dominant role due to its nutrient competition ability under P limitation in this type of lakes, where N is sufficient for its growth. This research has important implication on local nutrient management of water resources in the coal mine areas.
Key words:  Coalmine subsidence areas  subsidence lakes  phytoplankton  nutrition kinetics  nutrient limitation
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