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Phosphates in Lake Chapala, Mexico

机译：墨西哥查帕拉湖中的磷酸盐

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摘要

Lake Chapala, the most important lake in Mexico, has suffered from cultural eutrophication problems for many years, manifested by the growth of aquatic vegetation and an increase in primary productivity. It was found that about 70% of the total phosphorus entering Lake Chapala is orthophosphate, thus increasing the biological availability of nutrients in the lake. In addition, the hydrologic imbalance in the lake, caused by the over-use of water resources along the Lerma–Chapala basin, has significantly increased the hydraulic residence time of the inflow waters, thus increasing the effects of the added phosphorus, and creating conditions that increase the lake’s eutrophication status.The shallow characteristics of the lake and the action of the wind forces produce rapid changes in water quality, especially in the distribution of phosphate. The focus of this paper is on the development of a historical orthophosphate balance in Lake Chapala, quantifying the main point and non-point sources that contribute to the enhancement of this nutrient in the lake. The estimation of the amount of phosphate in the lake can be used to determine appropriate management practices to reduce the phosphate loads on the lake.
机译：查帕拉湖是墨西哥最重要的湖泊，多年来一直遭受文化富营养化问题的困扰，表现为水生植物的生长和初级生产力的提高。已发现进入查帕拉湖的总磷中约有70％是正磷酸盐，因此增加了湖中养分的生物利用度。此外，由于莱尔马－恰帕拉河沿岸水资源的过度使用而造成的湖泊水文失衡，大大增加了流入水的水力停留时间，从而增加了磷的添加量，并创造了条件湖的浅层特征和风力的作用使水质迅速变化，尤其是磷酸盐的分布。本文的重点是在查帕拉湖中历史正磷酸盐平衡的发展，量化有助于增加湖中养分的主要点和非点源。湖泊中磷酸盐含量的估算可用于确定适当的管理措施，以减少湖泊中磷酸盐的负荷。

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  • 来源
    《Lakes & Reservoirs》 |2001年第4期|313-321|共9页
  • 作者

    J. De Anda; H. Shear; U. Maniak; G. Riedel;

  • 作者单位

    Centro de InvestigaciÓn y Asistencia en TecnologÍa y DiseÑo del Estado de Jalisco A. C. Normalistas 800 44270 Guadalajara Jalisco Mexico;

    Environment Canada Ontario Region 4905 Dufferin Street Toronto Canada and;

    TU-Braunschweig Leichtweiss-Institut fÜr Wasserbau Abteilung Hydrologie und Wasserwirtschaft Beethovenstr 51a 38106 Braunschweig Germany;

    TU-Braunschweig Leichtweiss-Institut fÜr Wasserbau Abteilung Hydrologie und Wasserwirtschaft Beethovenstr 51a 38106 Braunschweig Germany;

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  • 正文语种 eng
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  • 关键词

    eutrophication; hydrologic balance; Lake Chapala; phosphate balance; phosphorus balance.;

    机译：富营养化;水合平衡;恰帕拉湖;磷酸盐平衡;磷平衡;

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