| 三峡库区澎溪河与磨刀溪电导率等水质特征与水华的关系比较 |
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| 引用本文： | 姜伟,周川,纪道斌,刘德富,任豫霜,Douglas Haffner,谢德体,张磊.三峡库区澎溪河与磨刀溪电导率等水质特征与水华的关系比较[J].环境科学,2017,38(6):2326-2335. |
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| 作者姓名： | 姜伟 周川 纪道斌 刘德富 任豫霜 Douglas Haffner 谢德体 张磊 |
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| 作者单位： | 西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716,西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716,三峡大学三峡库区生态环境教育部工程研究中心, 宜昌 443000,三峡大学三峡库区生态环境教育部工程研究中心, 宜昌 443000,西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716,西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716;加拿大温莎大学大湖环境研究中心, 加拿大安大略省温莎市, N9 B 3P4,西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716,西南大学资源环境学院, 重庆 400716;三峡库区水环境监测与模拟国际科技合作基地, 重庆 400716;加拿大温莎大学大湖环境研究中心, 加拿大安大略省温莎市, N9 B 3P4 |
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| 基金项目： | 国家科技合作基地经费项目 |
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| 摘 要： | 三峡库区北岸最大一级支流自三峡大坝2003年蓄水以来,频繁暴发水华,而毗邻的一级支流磨刀溪却少有水华暴发.本文以澎溪河和磨刀溪作为研究对象,于2014年春季和夏季三峡库区水华高发期对两条河流同时采样,对比分析两条河流水体水质以及叶绿素a(Chl-a)含量的时空变化,探索澎溪河水华暴发机理.结果表明:澎溪河Chl-a含量较磨刀溪高,澎溪河春季Chl-a最大值为60.5μg·L~(-1),夏季Chl-a最大值仅7.8μg·L~(-1);磨刀溪Chl-a变化趋势与澎溪河相反,磨刀溪春季Chl-a含量为2.92μg·L~(-1),夏季Chl-a达到7.48μg·L~(-1).澎溪河与磨刀溪春季和夏季节水体温度分层,为温跃层+滞温层模式,而没有混合层;两条河流Chl-a含量均位于水深10 m温跃层.澎溪河春季总氮(TN)、总磷(TP)平均值为2.305 mg·L~(-1)和0.053 mg·L~(-1),夏季为1.673 mg·L~(-1)和0.097 mg·L~(-1);磨刀溪春季为1.875 mg·L~(-1)和0.075 mg·L~(-1),夏季为1.79 mg·L~(-1)和0.054 mg·L~(-1).TN、TP水平均超过了国际公认发生富营养化的阈值;水体氮磷含量与Chl-a浓度并无显著相关性,营养盐并不是藻类生物量的限制性因素.然而在水体电导率的规律方面,两条河却存在很大的差异;春季,磨刀溪上游上层水体(0~10 m)电导率只有下游和长江干流的75%,来自长江干流的回水可覆盖至磨刀溪中游(断面MD03),与Chl-a在此处密集保持一致;夏季电导率和回水区分布与春季相似.与磨刀溪不同,澎溪河春季上游电导率为下游和干流的150%,长江干流回水可到PX04与PX05之间,上游高电导率对应着高Chl-a含量;澎溪河电导率与藻类生长分布表现出显著正相关关系,水体中除N、P营养盐外的其它离子对澎溪河水华暴发起重要作用.
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| 关 键 词： | 澎溪河 磨刀溪 水华 水温分层 电导率 Chl-a |
| 收稿时间： | 2016/10/25 0:00:00 |
| 修稿时间： | 2017/1/4 0:00:00 |
Comparison of Relationship Between Conduction and Algal Bloom in Pengxi River and Modao River in Three Gorges Reservoir |
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| JIANG Wei,ZHOU Chuan,JI Dao-bin,LIU De-fu,REN Yu-shuang,Douglas Haffner,XIE De-ti and ZHANG Lei.Comparison of Relationship Between Conduction and Algal Bloom in Pengxi River and Modao River in Three Gorges Reservoir[J].Chinese Journal of Environmental Science,2017,38(6):2326-2335. |
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| Authors: | JIANG Wei ZHOU Chuan JI Dao-bin LIU De-fu REN Yu-shuang Douglas Haffner XIE De-ti and ZHANG Lei |
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| Institution: | College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China,College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China,Engineering Research Centre of Eco-Environment in the Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443000, China,Engineering Research Centre of Eco-Environment in the Three Gorges Reservoir Region, Ministry of Education, Three Gorges University, Yichang 443000, China,College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China,College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China;Great Lakes Environmental Research Center, University of Windsor, Windsor, Ontario, Canada, N9 B 3P4,College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China and College of Resource and Environment, Southwest University, Chongqing 400716, China;Innovative Monitoring and Prediction of Non-point Sources Pollution and Water Quality in the Three Gorges Reservoir Catchment, Chongqing 400716, China;Great Lakes Environmental Research Center, University of Windsor, Windsor, Ontario, Canada, N9 B 3P4 |
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| Abstract: | |
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| Keywords: | Pengxi River Modao River algal blooms stratification conductivity chlorophyll-a |
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