...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>The Science of the Total Environment >Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model
【24h】

Evaluation of the total maximum allocated load of dissolved inorganic nitrogen using a watershed-coastal ocean coupled model

机译：利用流域沿海耦合模型评价溶解无机氮总量的总升值载荷

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Due to the recent rapid increase in human activity and economic development, many coastal areas have recently experienced a high degree of land-based pollution. Evaluating the total maximum allocated load (TMAL) of dissolved inorganic nitrogen (DIN) nutrients and the remaining capacity is of importance for improving water quality. A considerable amount of nutrients derived from the coastal watershed can be found in wet seasons, which is non-negligible for the estimation of remaining capacity. Therefore, we use a watershed-coastal ocean coupled model combined with an optimization algorithm to tackle this issue. In contrast with previous studies, this study provides a method to estimate the spatiotemporal variations in TMALs and we then compare it to the current DIN nutrient load, including both point sources and non-point sources. Our results suggest that the TMAL of Daya Bay (DB), which is located in the northern part of the South China Sea, is about 7976 metric tons per year (tlyr) and ranges from 191 metric tons per month (t/month) to 1072 tlmonth. The increase of non-point source (NPS) DIN input also plays an important role in daily overload events during wet seasons. Moreover, the TMALs show an inverse exponential correlation with the water age, but only about 65% of the variance is explained. This suggests that the variations from the optimization algorithm and from local water function zoning plans are also important. According to our prediction of the DIN input, the TMAL of DB will soon be exhausted in the next several years. Consequently, prompt actions are necessary to consider the distribution of TMALs in urban developments and to decelerate the rapid growth of DIN input. Therefore, the results of this study will be helpful for both local pollution control and future urban planning. (C) 2019 Elsevier B.V. rights reserved.
机译：由于近期人类活动和经济发展的快速增加，许多沿海地区最近经历了高度的陆地污染。评估溶解无机氮（DIN）营养素（DIN）营养素的总均可载荷（TMAL）和剩余容量对提高水质的重要性。在潮湿的季节可以发现沿海流域的大量营养素，这对于估计剩余能力是不可忽略的。因此，我们使用流域 - 沿海海洋耦合模型与优化算法结合起来解决这个问题。与以前的研究相比，该研究提供了一种估计TMALS的时空变化的方法，然后将其与当前的DIN营养负载进行比较，包括点源和非点源。我们的研究结果表明，位于南海北部的大马湾（DB）的TMAL每年约为7976公吨（TLYR），从每月191公吨（T /月）范围为191吨1072 TLMON。非点源（NPS）DIN输入的增加也在潮湿季节的日常过载事件中起着重要作用。此外，TMALS显示与水时期的反向指数相关性，但是解释了仅约65％的方差。这表明来自优化算法和本地水函数分区计划的变化也很重要。根据我们对DIN输入的预测，DB的TMAL将很快在未来几年内耗尽。因此，需要迅速的行动来考虑城市发展中的TMALS的分布，并减速DIN输入的快速增长。因此，本研究的结果将有助于当地污染控制和未来城市规划。 （c）2019年Elsevier B.V.保留权利。

著录项

  • 来源
    《The Science of the Total Environment》 |2019年第jul10期|734-749|共16页
  • 作者

    Chen Yuren; Cheng Weicong; Zhang Heng; Qiao Jiawei; Liu Jiahuan; Shi Zhen; Gong Wenping;

  • 作者单位

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China|Southern Lab Ocean Sci & Engn Guangdong Zhuhai Zhuhai 519000 Peoples R China|Sun Yat Sen Univ Guangdong Prov Key Lab Climate Change & Nat Disas Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China;

    Chinese Acad Sci South China Sea Inst Oceanol State Key Lab Trop Oceanog Guangzhou 510301 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Marine Sci Guangzhou 510275 Guangdong Peoples R China|Guangdong Prov Key Lab Marine Resources & Coastal Guangzhou 510275 Guangdong Peoples R China|Southern Lab Ocean Sci & Engn Guangdong Zhuhai Zhuhai 519000 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Coastal management; TMAL; Pollution control; Daya Bay; Couple model; Overloaded rate;

    机译：沿海管理;TMAL;污染控制;大亚湾;情侣模型;超载率;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号