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首页> 外文期刊>Hydrologie und Wasserbewirtschaftung >Spatial and temporal variability of water quantity and water quality of the Thi Vai catchment in southern Vietnam - Data analysis of a monitoring program
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Spatial and temporal variability of water quantity and water quality of the Thi Vai catchment in southern Vietnam - Data analysis of a monitoring program

机译：越南南部蒂维河集水区水量和水质的时空变化-监测程序的数据分析

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摘要

The Thi Vai estuary and its catchment have been suffering for many years from a strongly deficient water quality, which has been caused by numerous sources of pollution (industrial zones, urban areas, agriculture). An integrated water management, which takes into account the most important present and future pollution sources, had not yet been established for the Thi Vai catchment before the beginning of the BMBF project EWATEC-COAST, coordinated by the TU Braunschweig. The primary objective of this project was, therefore, to develop a model-based management system for sustainable water and environmental protection of the Thi Vai catchment. For such a system, monitoring data are an essential basis for assessing the current state of rivers in the catchment, for identifying the existing processes and pollution sources and for calibrating and validating the model-based management system. Based on the existing historical water quality data, which were collected quarterly within the governmental monitoring program, an evaluation of the spatial and especially temporal dynamics of water quality was not possible. For this reason, a separate monitoring program of water quantity and quality was initiated at the beginning of the project. At 7 monitoring stations along the Thi Vai estuary and its important tributaries, water quantity was measurery 10 minutes and lasted from March 2013 to September 2014 (19 months). Due to financial reasons, the monitoring of water quality had a duration of 11 months (from March 2013 to January 2014). At the same stations, water quality was measured once a week. Investigated water quality parameters aed evre water temperature, dissolved oxygen, pH, conductivity, ammonium, nitrite, nitrate, total nitrogen, dissolved phosphate, total phosphorus, iron and total suspended solids. In this paper, the spatial and temporal variability of the collected data is examined. The data show the strong influence of the tide on the Thi Vai estuary. While the areal rainfall divides the hydrological regime of the inflows into low-water and high-water phases, the Thi Vai estuary is mainly influenced by the tide. The water quality data show a pollution of the inflows with ammonium, nitrite, TSS and iron. For the Thi Vai estuary, the low oxygen contents and the very high nitrite concentrations are the main water quality problems. In addition, data from this monitoring are compared with data from the past in order to understand the development of the water quality of the estuary.
机译：蒂瓦伊河口及其流域多年来一直受到严重污染的水质的困扰，这是由多种污染源（工业区，城市地区，农业）造成的。在布伦瑞克工业大学协调的BMBF项目EWATEC-COAST开始之前，尚未为Thi Vai流域建立一个综合的水管理系统，其中考虑了当前和未来最重要的污染源。因此，该项目的主要目标是为蒂瓦河集水区开发基于模型的管理系统，以实现可持续的水和环境保护。对于这样的系统，监视数据是评估流域内河流的当前状态，识别现有过程和污染源以及校准和验证基于模型的管理系统的重要基础。根据在政府监测计划内每季度收集的现有历史水质数据，不可能对水质的时空动态进行评估。因此，在项目开始时启动了单独的水量和水质监测程序。在蒂瓦伊河口及其重要支流的7个监测站，水量为10分钟，持续时间为2013年3月至2014年9月（19个月）。由于财务原因，水质监测的持续时间为11个月（2013年3月至2014年1月）。在同一站点，每周一次测量水质。研究的水质参数包括水温，溶解氧，pH，电导率，铵，亚硝酸盐，硝酸盐，总氮，溶解磷酸盐，总磷，铁和总悬浮固体。在本文中，检查了所收集数据的时空变异性。数据表明，潮汐对提瓦河河口有很大的影响。区域降雨将流入的水文状况分为低水位和高水位，而Thi Vai河口主要受潮汐影响。水质数据显示氨，亚硝酸盐，TSS和铁污染了流入水。对于蒂瓦伊河口来说，低氧含量和非常高的亚硝酸盐浓度是主要的水质问题。另外，将这次监测的数据与过去的数据进行了比较，以了解河口水质的发展。

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  • 来源
    《Hydrologie und Wasserbewirtschaftung》 |2017年第6期|370-382|共13页
  • 作者

    Thi Thu Huyen Le; Lorenz Malte; Zeunert Stephanie; Cong Vu Nguyen; Meon Guenter;

  • 作者单位

    Tech Univ Carolo Wilhelmina Braunschweig, Leichtweiss Inst Wasserbau, Abt Hydrol Wasserwirtschaft & Gewasserschutz, Beethovenstr 51a, D-38106 Braunschweig, Germany;

    Tech Univ Carolo Wilhelmina Braunschweig, Leichtweiss Inst Wasserbau, Abt Hydrol Wasserwirtschaft & Gewasserschutz, Beethovenstr 51a, D-38106 Braunschweig, Germany;

    Tech Univ Carolo Wilhelmina Braunschweig, Leichtweiss Inst Wasserbau, Abt Hydrol Wasserwirtschaft & Gewasserschutz, Beethovenstr 51a, D-38106 Braunschweig, Germany;

    Tech Univ Carolo Wilhelmina Braunschweig, Leichtweiss Inst Wasserbau, Abt Hydrol Wasserwirtschaft & Gewasserschutz, Beethovenstr 51a, D-38106 Braunschweig, Germany;

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  • 正文语种 ger
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  • 关键词

    Monitoring; water quantity; water quality; estuary; Vietnam;

    机译：监测;水量;水质;河口;越南;

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