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首页> 外文期刊>Clean >Effects of Ammonia Nitrogen and SedimentNutrient on Growth of the Submerged PlantVallisneria natans
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Effects of Ammonia Nitrogen and SedimentNutrient on Growth of the Submerged PlantVallisneria natans

机译：氨氮和沉积物养分对淹没植物缬草生长的影响

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摘要

In order to investigate the impacts of ammonia nitrogen concentration and the necessity of dredging,five levels of ammonia nitrogen including 0, 2, 4, 8, and 16 mg L~(-1) and two levels of sediments nutriments (high and low) were treated. The total biomass, leaf, root, and flower biomasses were selected as the growth indicators, while total chlorophyll (i.e., chl-a and -b), malondialdehyde (MDA), and free proline as subsidiary physiological index. When ammonia-N contents of the water column were 8–16 mg L~(-1), the total biomass ofVallisneria natansin the first harvest is higher than those in the second harvest, and the total chlorophyll concentration, MDA and free proline of the plants became significantly low. It indicates that high ammonia nitrogen (>8mgL~(-1) of the water column inhibit the growth of V. natans. The total biomass, the total chlorophyll concentration of plants in the high nutrient sediment is higher than those in the low nutrient sediment, suggesting that high sediments nutrient promote the growth ofV. natans. Therefore, using V. natansfor water ecological restoration, the water should meet the ammonia nitrogen content of<8mgL~(-1). Moreover, dredging eutrophication sediment is probably not necessary.
机译：为了研究氨氮浓度的影响和疏of的必要性，包括0、2、4、8和16 mg L〜（-1）五个水平的氨氮和两个水平的沉积物营养素（高和低）被治疗。选择总生物量，叶，根和花生物量作为生长指标，而总叶绿素（即chl-a和-b），丙二醛（MDA）和游离脯氨酸作为辅助生理指标。当水柱中氨氮含量为8–16 mg L〜（-1）时，第一收获时缬草的总生物量高于第二收获时的总生物量，且其总叶绿素浓度，MDA和游离脯氨酸含量较高。植物变得很低。结果表明，高氨氮（> 8mgL〜（-1）水柱抑制了纳豆的生长，高养分沉积物中植物总生物量，总叶绿素浓度高于低养分沉积物中植物。提示高沉积物养分促进了纳豆的生长，因此利用纳豆进行水的生态修复时，水中的氨氮含量应<8mgL〜（-1），此外，疏富营养化的沉积物可能是不必要的。

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  • 来源
    《Clean》 |2015年第12期|1653-1659|共7页
  • 作者

    Zhengjie Zhu; Hezhong Yuan; Ying Wei; Pengshan Li; Peihua Zhang; Dong Xie;

  • 作者单位

    School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

    School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

    School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

    School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

    School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

    Professor D. Xie, School of Life Science and Institute of Wetland Ecology, Nanjing University, Nanjing 210093, P. R. China Nanjing University Ecology Research Institute of Changshu (NJUecoRICH),Changshu, Jiangsu, P. R. China;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    Aquatic macrophytes; Catchment; Eutrophication; Submerged plant; Vegetationrestoration;

    机译：水生植物;集水;富营养化淹没的植物;植被恢复;

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