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首页> 外文期刊>Ocean & coastal management >Salinity dynamics as a tool for water resources management in coastal zones: An application in the Tramandai River basin, southern Brazil
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Salinity dynamics as a tool for water resources management in coastal zones: An application in the Tramandai River basin, southern Brazil

机译：盐分动力学作为沿海地区水资源管理的工具：在巴西南部特拉曼代河流域的应用

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摘要

Coastal zones are transition environments, forming the interface between continent and ocean. The effects of human activity on coastal water resources usually reduce the flows of freshwater to estuaries, modifying estuarine mixing processes and extending marine influences further inland. This dynamic can adversely affect water availability in the coastal zone. To manage coastal water resources, a mass-balance model has been used to describe the dynamics of salinity in the estuarine system of the Tramandai River, southern Brazil. The output from the model is used to assist the integrated water resources management within the Brazilian context. From the salinity model it was possible to define the estuarine area and its relation to the critical water body for management purposes, the Passo Lagoon. Modelling the salinity dynamics was shown to be useful for identifying procedures needed for managing water resources in coastal basins. Permits to abstract water can be used to limit withdrawals, so as maintain the flows needed to limit saline intrusion. With the classification of water bodies, the maximum saline load that each water-body can bear without changing the environmental can also be identified. Monitoring can be used to maintain saline levels in water that are adequate for the purposes intended. The methodology has been shown to be useful for integrated water resources management, providing a link between existing procedures and the particular characteristics of coastal basins.
机译：沿海地区是过渡环境，形成了大陆和海洋之间的界面。人类活动对沿海水资源的影响通常会减少淡水到河口的流量，改变河口的混合过程，并将海洋影响扩大到内陆。这种动态可能会对沿海地区的水供应产生不利影响。为了管理沿海水资源，已使用质量平衡模型来描述巴西南部特拉曼代河河口系统中盐度的动态。该模型的输出用于协助巴西范围内的水资源综合管理。从盐度模型中可以定义河口区域及其与关键水体的关系，以进行管理，例如Passo泻湖。盐度动力学模型被证明对确定沿海流域水资源管理所需的程序很有用。取水许可证可用于限制取水量，以保持限制盐分入侵所需的流量。通过水体的分类，还可以确定每个水体在不改变环境的情况下可以承受的最大盐分负荷。监测可用于维持水中的盐分含量，足以满足预期的目的。实践证明，该方法对于水资源综合管理非常有用，它可以将现有程序与沿海流域的特殊特征联系起来。

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  • 来源
    《Ocean & coastal management》 |2012年第1期|p.52-62|共11页
  • 作者

    Ester Loitzenbauer; Carlos Andre Bulhoes Mendes;

  • 作者单位

    Instituteo de Pesquisas Hidriulicas, Universidade Federal do Rio Grande do Sul, Av. Bento Gonfalves, 9500, Caixa Postal 15029, CEP 91501-970 Porto Alegre, RS, Brazil;

    Instituteo de Pesquisas Hidriulicas, Universidade Federal do Rio Grande do Sul, Av. Bento Gonfalves, 9500, Caixa Postal 15029, CEP 91501-970 Porto Alegre, RS, Brazil;

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