| 引用本文: | 李培培,史文,刘其根,余元龙,何光喜,陈来生,任丽萍,洪荣华.千岛湖叶绿素a的时空分布及其与影响因子的相关分析.湖泊科学,2011,23(4):568-574. DOI:10.18307/2011.0412 |
| LI Peipei,SHI Wen,LIU Qigen,YU Yuanlong,HE Guangxi,CHEN Laisheng,REN Liping,HONG Ronghua.Spatial and temporal distribution patterns of chlorophyll-a and the correlation analysis with environmental factors in Lake Qiandao. J. Lake Sci.2011,23(4):568-574. DOI:10.18307/2011.0412 |
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| 千岛湖叶绿素a的时空分布及其与影响因子的相关分析 |
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李培培1, 史文1, 刘其根1, 余元龙1, 何光喜2, 陈来生2, 任丽萍2, 洪荣华2
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1.上海海洋大学农业部水产种质资源与利用重点开放实验室, 上海 201306;2.浙江杭州千岛湖发展有限公司, 杭州 311700
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| 摘要: |
| 为了解千岛湖在大量放养鲢鳙鱼后叶绿素a的时空分布格局及其与主要环境因子的相关性, 本文于2007年1月至2009年12月对千岛湖叶绿素a及其他10个水质理化指标进行了每月定期采样及监测.结果表明:上游河流区和过渡区叶绿素a含量存在明显的季节变化, 其共同特点是每年会形成春季和夏末秋初的双高峰.叶绿素a含量在空间分布上具有一定的分异性, 河流区叶绿素a含量明显高于中下游区(过渡区和湖泊区).叶绿素a含量的最高峰通常出现在4-12m, 最深出现在20m, 春夏季出现明显分层.千岛湖叶绿素a与亚硝酸盐氮(NO2-N)、高锰酸盐指数(CODMn)、水温(WT)和硅酸盐(SiO32-)呈低度相关, 与其他环境因子无显著相关性或相关性很弱.多元逐步回归分析结果显示, 千岛湖叶绿素a与筛选出的几个关键环境因子之间的回归方程为:Chl.a=0.114WT+2.120CODMn+17.157SiO32--37.391NO2-N-1.946。 |
| 关键词: 千岛湖 叶绿素a 时空分布 相关分析 |
| DOI：10.18307/2011.0412 |
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| 基金项目:国家自然科学基金项目(30670388,31072218);上海市重点学科项目(Y1101)联合资助 |
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| Spatial and temporal distribution patterns of chlorophyll-a and the correlation analysis with environmental factors in Lake Qiandao |
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LI Peipei1, SHI Wen1, LIU Qigen1, YU Yuanlong1, HE Guangxi2, CHEN Laisheng2, REN Liping2, HONG Ronghua2
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1.Key Laboratory of Aquatic Genetic Resources and Utilization, Ministry of Agriculture, Shanghai Ocean University, Shanghai 201306, P.R.China;2.Hangzhou Qiandaohu Development Co., ltd., Hangzhou 311700, P.R.China
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| Abstract: |
| The temporal and spatial distribution patterns of chlorophyll-a and its correlation with the main environmental factors were analyzed according to the monthly investigation from January, 2007 to December, 2009 in Lake Qiandao where a large number of silver carp and bighead carp stocked.Results showed that the concentration of chlorophyll-a in sampling stations located in the upper reach riverine and transitional zones of the reservoir showed a significant seasonal variations with two concentration peaks oc-curred in spring and late summer or early fall,respectively.The concentrations of chlorophyll-a in upstream sites(in the riverine and transitional zones) were significantly higher than those of downstream sites.The chlorophyll-a during the warm season was usu-ally stratified with a concentration peak occurring at depths between 4m and 12m, occasionally at a depth of 20m.The result of cor-relation analysis showed a weak correlation between chlorophyll-a and NO2-N,CODMn ,water temperature( WT) and silicate (SiO32- ),while no significant correlations of the chlorophyll-a were found with other environmental factors,especially with the TP in the water.The regression equation between chlorophyll-a and the correlated environmental factors could be expressed through the multiple linear stepwise regressions as:Chl.a=0.114WT +2.120CODMn +17.157SiO32--37.391 NO2-N -1.946. |
| Key words: Lake Qiandao chlorophyll-a spatial and temporal distribution correlation analysis |
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