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首页> 外文期刊>Fresenius Environmental Bulletin >THE DISTRIBUTION AND OUTPUT OF DISSOLVED CARBON IN TYPICAL RIVERS OF SANJIANG PLAIN, CHINA
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THE DISTRIBUTION AND OUTPUT OF DISSOLVED CARBON IN TYPICAL RIVERS OF SANJIANG PLAIN, CHINA

机译：三江平原典型河流中溶解碳的分布和产出

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摘要

Dissolved organic carbon (DOC) in rivers plays an important link from terrestrial to marine environments in the global carbon cycle. The Sanjiang Plain, a floodplain encompassing many freshwater wetlands, had been suffering from extensive buildings of drainage ditches and addition of chemical fertilizers in the past 60 years. The distribution of DOC in typical rivers (divided into main and marshy rivers) of Sanjiang Plain from 2006 to 2008 was studied. Marshy rivers including Bielahong River, Naoli River, and Yalv River (mean concentration, 9.03 mg/L) showed higher DOC levels than main rivers (mean concentration, 6.63 mg/L) including Amur River, Ussuri River, and Songhua River. It was estimated that about 1.54 million tons of DOC from Amur River were brought into Okhotsk Sea annually. The geographical or seasonal variation between main and marshy rivers has also proven that the farming activity could increase DOC output, and the risk that increasing DOC concentration in growing season potentially increase the pollutant mobility and toxicity should be paid more attention.
机译：在全球碳循环中，河流中的溶解性有机碳（DOC）在从陆地到海洋环境中起着重要的作用。在过去的60年中，三江平原是一个洪泛平原，周围遍布许多淡水湿地，其排水沟和化学肥料的添加已使建筑面积大增。研究了2006 — 2008年三江平原典型河流（分为干流和湿润河流）DOC的分布情况。别拉洪河，瑙里河和鸭绿江等沼泽河（平均浓度为9.03 mg / L）的DOC水平高于阿穆尔河，乌苏里河和松花江等主要河流（平均浓度为6.63 mg / L）。据估计，每年约有154万吨来自阿穆尔河的DOC被带入鄂霍次克海。主干河和沼泽河之间的地理或季节变化也证明了耕作活动可以增加DOC的产量，并且应更加注意在生长季节增加DOC浓度可能增加污染物迁移率和毒性的风险。

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  • 来源
    《Fresenius Environmental Bulletin》 |2013年第2a期|508-515|共8页
  • 作者

    Lixia Wang; Baixing Yan; Xiaofeng Pan; Hui Zhu; Yingying Xu;

  • 作者单位

    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;

    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;

    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;

    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;

    Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130012, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    dissolved carbon; flux; land-use change; risk; river;

    机译：溶解碳通量土地利用变化;风险;河;

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