Integrated approach of hydrological and water quality dynamic simulation for anthropogenic disturbance assessment in the Huai River Basin, China
Integrated approach of hydrological and water quality dynamic simulation for anthropogenic disturbance assessment in the Huai River Basin, China
复制标题
淮河流域人为干扰评估的水文水质动态模拟综合方法
DOI：
10.1016/j.scitotenv.2017.04.092
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发表时间：
2017
影响因子：
9.8
通讯作者：
Zhang Yongyong
中科院分区：
文献类型：
--
作者：
Zhai Xiaoyan;Xia Jun;Zhang Yongyong
详细描述水文过程和与之相关的污染过程对于流域尺度的环境改善和管理具有重要作用。它还为评估潜在因素对水文和水质状况的影响提供了一个有用的工具。然而，仍然很难很好地捕捉到这些复杂过程的一些典型特征，包括固有的非线性和时变、水基础设施监管，特别是对于高度监管的流域。在这项研究中，提出了一种综合的水文和水质动态模拟方法来解决这些困难，并评估了几种人为干扰的影响。研究区域为受干扰程度较高、污染严重的淮河流域。考虑的主要人为活动是点源污染排放、弥散污染物损失和大坝管理。结果表明，该模型能较好地模拟淮河流域上中游15个站点丰水年(2007年)、平水年(2008年)和枯水年(2004年)的水位、流量、高锰酸盐指数(CODMn)和氨氮(NH4-N)浓度的变化。在保持污染源不变的情况下，下游水闸的调节规则对水质改善有负面作用，而中游水闸的调节规则对水质改善有积极作用。而水质恶化的主要原因是点源污染的排放(12%~43%)，其次是扩散污染物损失(0~23%)和以水量为导向的大坝调度(-29%~20%)。希望为淮河流域水污染控制和水资源可持续管理的实施提供技术支持，并为水文、水动力一体化模拟提供参考。(C)2017爱思唯尔B.V.保留所有权利。
Detailed depiction of hydrological process and its associated pollution processes plays a critical role in environment improvement and management at basin scale. It also provides a useful tool to assess impact of potential factors on hydrological and water quality conditions. However, it was still difficult to well capture some typical characteristics of these complicated processes including built-in nonlinearity and time-variation, water infrastructure regulations, particularly for highly regulated basins. In this study, an integrated approach of hydrological and water quality dynamic simulation was proposed to solve these difficulties and assess the impacts of several anthropogenic disturbances. The Huai River Basin which was highly disturbed and seriously polluted, was selected as the study area. The main anthropogenic activities considered were point source pollution emissions, diffuse pollutant losses and dam regulations. Results showed that the integrated simulation could well capture the variations in water level, water discharge, concentrations of permanganate index (CODMn) and ammonia nitrogen (NH4-N) in high (2007), normal (2008) and low (2004) flow years at 15 stations in the upper and middle streams of Huai River Basin. The regulation rules of downstream sluices played negative roles on water quality improvement if keeping current pollution sources, while those of middle stream sluices played positive roles on water quality improvement. However, the water quality deterioration was mainly attributed to emission of point source pollution (12%-43%), followed by diffuse pollutant loss (0-23%) and water quantity-oriented dam regulation (-29%-20%). The study was expected to provide technical supports for the implementation of water pollution control and sustainable water resources management in the Huai River Basin, and give a reference of integrated hydrological and hydrodynamic simulation. (C) 2017 Elsevier B.V. All rights reserved.