• 关键词：西部  渭河  水质水量

• 基金项目：国家重大科技专项(No.2009ZX07212-002-003-004);国家自然科学基金项目(No.50909080)

• 朱磊
• 西安理工大学西北水资源与环境生态教育部重点实验室, 西安 710048

• 李怀恩
• 西安理工大学西北水资源与环境生态教育部重点实验室, 西安 710048

• 李家科
• 西安理工大学西北水资源与环境生态教育部重点实验室, 西安 710048

• 摘要：通过建立渭河关中段水质水量响应关系程序,对渭河关中段规划水平年(2020年)不同来水频率(P)条件下丰水期、平水期、枯水期的水质水量响应关系进行定量化分析研究.结果表明,规划水平年丰水期、平水期、枯水期同一断面在不同来水频率下COD和NH₄⁺-N从小到大的排序均为:P=25%、P=50%、P=75%、P=95%.规划水平年丰水期、平水期、枯水期的COD在林家村断面至兴平断面较小,低于地表水环境质量标准(GB3838—2002)Ⅴ类水标准,而后逐渐开始升高,南营断面COD涨幅较大,至咸阳断面升至最高,后又逐渐减低;规划水平年丰水期、平水期、枯水期的NH₄⁺-N在林家村断面至兴平断面较小,低于地表水环境质量标准Ⅴ类水标准,而后逐渐开始升高,咸阳断面NH₄⁺-N增幅较大,至树园断面升至最高.

• Abstract：The quantitative analysis for water quality and quantity response relationship were conducted in the wet,flat and dry seasons of different inflow frequencies in 2020 by the program of the relationship between water quantity and quality in Guanzhong Reach of Weihe River.The conclusions showed that the pollutant concentrations of the same section in the wet,flat and dry seasons from low to high were as follows:P(frequency)=25%,P=50%,P=75%,P=95%.The concentration of COD was lower between Linjiacun Section and Xingping Section and less than the Class Ⅴ surface water quality standard.The concentration increased drastically from Nanying Section and then decreased from Xianyang Section.The concentration of NH₄⁺-N was lower between Linjiacun Section and Xingping Section and less than the Class Ⅴ surface water quality standard.The concentrations increased considerably from Xianyang Section,and then began to decrease from Shuyuan Section.

• Key words：West China  Weihe River  water quality and quantity

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