巢湖夏季叶绿素a浓度变化及其与环境因子之间关系的围隔实验
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摘要
为研究巢湖夏季叶绿素a浓度变化及其与环境因子间的关系,于2013年5月22日至8月7日(共12周)在巢湖进行围隔实验.共设置4个实验组(即B组:巢湖底泥;C组:巢湖底泥+30g/L鳙鱼;D组:巢湖底泥+60g/L鳙鱼;E组;巢湖底泥+90g/L鳙鱼)和一个对照组(即A组:不加巢湖底泥和鳙鱼).结果表明:研究期间5组围隔内叶绿素a浓度均呈现下降趋势.A~E组的叶绿素a最大值均出现在实验初期,分别是54.9μg/L、38.0μg/L、35.9μg/L、37.4μg/L和35.8μg/L.Pearson相关分析显示,5组围隔中叶绿素a浓度与透明度呈负相关关系,与总磷(TP)和浮游甲壳动物密度均呈正相关.另外,围隔D和E中叶绿素a均与总氮(TN)成正相关.围隔A、C、D和E中的叶绿素a浓度与水温呈负相关关系,而围隔B的叶绿素a浓度与水温无相关性.
In order to study the summer variation of chlorophyll-a concentration with its relation to environ-mental factors in Lake Chaohu,enclosure experiment was carried out from May 22 to August 7 in 2013(twelve weeks)near Zhong miao in Lake Chaohu.Four experiment groups(namely,B group:the sedimentfrom Lake Chaohu;C group:the sediment from Lake Chaohu + 30g/m3 Aristichthys nobilis;D group:the sed-iment from Lake Chaohu + 60g/m3 A.nobilis;E group:the sediment from Lake Chaohu + 90g/m3 A.nobilis)and the control group(namely A group:no sediment and fish)were employed.The result showed that chloro-phyll-a concentration in five enclosures presented a drown trend during the study period.The maxima of chlo-rophyll-a concentration in the A~E enclosures appeared at the beginning of the experiment,and they are 54.9 μg/L,38.0μg/L,35.9μg/L,37.4μg/L and 35.8μg/L,respectively.Pearson correlation analysis showedthat there was negative relationship between chlorophyll-a concentration and transparency in five enclosureswhile it had positive correlation with TP and crustacean zooplankton density.Moreover,chlorophyll-a concen-tration in the D and E enclosures were positive correlations with TN.There were negative relationships be-tween chlorophyll-a concentration in the A,D,C and E enclosures and water temperature while it had no re-lationship in the B enclosure.
In order to study the summer variation of chlorophyll-a concentration with its relation to environ-mental factors in Lake Chaohu,enclosure experiment was carried out from May 22 to August 7 in 2013(twelve weeks)near Zhong miao in Lake Chaohu.Four experiment groups(namely,B group:the sedimentfrom Lake Chaohu;C group:the sediment from Lake Chaohu + 30g/m3 Aristichthys nobilis;D group:the sed-iment from Lake Chaohu + 60g/m3 A.nobilis;E group:the sediment from Lake Chaohu + 90g/m3 A.nobilis)and the control group(namely A group:no sediment and fish)were employed.The result showed that chloro-phyll-a concentration in five enclosures presented a drown trend during the study period.The maxima of chlo-rophyll-a concentration in the A~E enclosures appeared at the beginning of the experiment,and they are 54.9 μg/L,38.0μg/L,35.9μg/L,37.4μg/L and 35.8μg/L,respectively.Pearson correlation analysis showedthat there was negative relationship between chlorophyll-a concentration and transparency in five enclosureswhile it had positive correlation with TP and crustacean zooplankton density.Moreover,chlorophyll-a concen-tration in the D and E enclosures were positive correlations with TN.There were negative relationships be-tween chlorophyll-a concentration in the A,D,C and E enclosures and water temperature while it had no re-lationship in the B enclosure.
引文
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[17]梁淑轩,王云晓,秦哲.白洋淀叶绿素a及其水质因子分析[J].海洋湖沼通报,2012(3):66-73.
[18]阮晓红,石晓丹,赵振华,等.苏州平原河网区浅水湖泊叶绿素a与环境因子的相关关系[J].湖泊科学,2008,20(5):556-562.
[19]缪灿,李堃,余冠军.巢湖夏、秋季浮游植物叶绿素a及蓝藻水华影响因素分析[J].生物学杂志,2011,28(2):54-57.
[20]DENG Daogui,XIE Ping,ZHOU Qiong,et al.Field and experimental studies on the combined impacts of cyanobacterial blooms and small algae on crustacean zooplankton in a large,subtropical,Chinese lake[J].Limnology,2008,9:1-11.
[2]王飞儿,吕唤春,陈晓旭,等.千岛湖叶绿素浓度的动态变化及其影响因素分析[J].浙江大学学报,2004,30(1):22-26.
[3]杨威,邓道贵,张赛,等.洱海叶绿素a浓度的季节动态和空间分布[J].湖泊科学,2012,24(6):858-864.
[4]官涤,高大文,任南琪.巢湖叶绿素a与环境因子耦合效应的多元分析[J].哈尔滨工业大学学报,2011,43(12):68-71.
[5]李堃,肖莆.巢湖叶绿素a浓度的时空分布及其与氮磷浓度的关系[J].生物学杂志,2011,28(1):53-56.
[6]WU Zhaoshi,HE Hu,CAI Yongjiu,et al.Spatial distribution of chlorophyll a and its relationship with the environment during summer in Lake Poyang:a Yangtze-connected lake[J].Hydrobiologia,2014,732:61-70.
[7]章宗涉,黄祥飞.淡水浮游生物研究方法[M].北京:科学出版社,1991.
[8]黄祥飞.湖泊生态调查观测与分析[M].北京:中国标准出版社,2000.
[9]张晓晶,李畅游,张生,等.乌梁素海叶绿素a与理化因子的统计分析[J].环境化学,2010,29(2):315-319.
[10]江敏,卢柳,刑斌,等.滴水湖水体叶绿素a与水质因子的多元分析[J].上海海洋大学学报,2011,20(3):451-456.
[11]刘振盛,王春生,倪建宇,等.抚仙湖叶绿素a的生态分布特征[J].生态学报,2003,23(9):1773-1780.
[12]韩新芹,叶麟,徐耀阳,等.香溪河库湾春季叶绿素a浓度动态及其影响因子[J].水生生物学报,2006,30(1):89-93.
[13]崔莉凤,黄振芳,刘载文,等.水华暴发叶绿素a与表征指标溶解氧和p H的关系[J].给水排水,2008,34(S):177-178.
[14]LEHMAN P W.Environmental factors associated with long-term changes in chlorophyll concentration in the SacramentoSan Joaquin Delta and Suisun Bay,California[J].Estuarles,1992,15(3):335-348.
[15]经济合作与发展组织(OECD).水体富营养化监测评价与防治[M].北京:中国环境科学出版社,1989.
[16]商立海,李秋华,邱华北.贵州红枫叶湖水体叶绿素a的分布与磷循环[J].生态学杂志,2011,30(5):1023-1030.
[17]梁淑轩,王云晓,秦哲.白洋淀叶绿素a及其水质因子分析[J].海洋湖沼通报,2012(3):66-73.
[18]阮晓红,石晓丹,赵振华,等.苏州平原河网区浅水湖泊叶绿素a与环境因子的相关关系[J].湖泊科学,2008,20(5):556-562.
[19]缪灿,李堃,余冠军.巢湖夏、秋季浮游植物叶绿素a及蓝藻水华影响因素分析[J].生物学杂志,2011,28(2):54-57.
[20]DENG Daogui,XIE Ping,ZHOU Qiong,et al.Field and experimental studies on the combined impacts of cyanobacterial blooms and small algae on crustacean zooplankton in a large,subtropical,Chinese lake[J].Limnology,2008,9:1-11.
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