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30+year evolution of Cu in the surface sediment of Lake Poyang, China

机译：Po阳湖表层沉积物中铜的30年演化

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摘要

Poyang Lake, the largest freshwater lake in China, is increasingly experiencing Cu crises. Combining field data, laboratory experiments, and long-term simulations, we retrieved 30 + year evolution of Cu in surface sediments (SCu). SCu evolution between 1983 and 2015 may be separated into two distinguishable periods. During the first period (1983-2003), SCu underwent a continuous increase at a mean rate of 1.80 mg/kg/yr; however, since 2003 it displayed a stepwise reduction tendency. The average SCu concentration of the entire lake in 2015 fell to 54.26 mg/kg, which is approximately 30.01% lower than that in 2003. The operation of Three Gorges Dam (TGD) markedly altered the river-lake relationship, pulled more deposited Cu along with sediment out toward the Yangtze River, and made the regions of high SCu emanate from the southeastern lake extend northwestward between 2003 and 2015. SCu in the reserves showed significant inter-annual variations, with the exception of the Jiangxi Whitebait Spawning Reserve (JWSR), where SCu generally has not been significantly impacted and has displayed no departure from the 30 + year mean of 30.57 mg/kg. The National Germplasm Reserve (NGR) and Nanjishan National Nature Reserve (NNNR) were detected with the highest SCu, with the peak concentrations, respectively, of 123.15 mg/kg and 103.1 mg/kg. (C) 2016 Elsevier Ltd. All rights reserved.
机译：the阳湖是中国最大的淡水湖，其铜危机日益加剧。结合现场数据，实验室实验和长期模拟，我们获得了表面沉积物中铜的30年以上演化。 1983年至2015年之间的SCu演变可分为两个可区分的时期。在第一个时期（1983-2003年），SCu以平均1.80 mg / kg / yr的速率连续增加；但是，自2003年以来，它呈现出逐步降低的趋势。 2015年整个湖泊的平均SCu浓度降至54.26 mg / kg，比2003年降低了约30.01％。三峡大坝（TGD）的运行显着改变了河湖关系，沿河道拉动了更多的沉积铜。在2003年至2015年之间，东南湖泊的高SCu区域向西北延伸。保护区的SCu呈现明显的年际变化，江西银鱼产卵保护区（JWSR）除外，通常SCU并未受到明显影响，并且未显示30年平均值30.57 mg / kg的偏差。国家种质保护区（NGR）和南极山国家级自然保护区（NNNR）的SCu最高，峰值浓度分别为123.15 mg / kg和103.1 mg / kg。 （C）2016 Elsevier Ltd.保留所有权利。

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  • 来源
    《Chemosphere》 |2017年第2期|1604-1612|共9页
  • 作者

    Wang Hua; Zhao Yijun; Liang Dongfang; Deng Yanqing; Pang Yong;

  • 作者单位

    Hohai Univ, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China|Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England;

    Hohai Univ, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China;

    Univ Cambridge, Dept Engn, Cambridge CB2 1PZ, England;

    Hydrol Bur Jiangxi Prov, Nanchang 330002, Jiangxi, Peoples R China;

    Hohai Univ, Key Lab Integrated Regulat & Resource Dev Shallow, Minist Educ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Poyang Lake; Heavy metal; Cu; Surface sediment; Numerical simulation;

    机译：阳湖重金属铜地表沉积物数值模拟;

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