选取对数据需求量相对较小的河流一维稳态水质模型 QUAL2K 模型开展水质模型模拟与水质风险评估的 研究。为了简化 QU AL2K 模型建模过程, 提高模型计算效率, 优化模拟结果展示效果以及实现水质风险评价的应 用, 将 QUAL2K 模型进行 B/S 架构系统集成, 运用 ArcGIS 平台实现水质模型结果的可视化动态播放和专题图制 作, 并提出通过各时间步长的水质模拟结果统计各河段的水质超标风险概率的水质风险评价方法, 为流域水环境优 化管理提供决策依据。

With the increasingly prominent water environment pollution problem, the demand of water quality risk assessment is rapidly increasing as well. In this article, we chose the one 2dimensional steady state water quality model 2QUAL2K model, which has small data demand and is broadly applied to river network model, to simulate the water quality and evaluate the water quali 2 ty risk. In order to simplify the model development process, improve the calculation efficiency, optimize display effects of model results, and achieve the application in water quality risk assessment, we transformed the QUAL2K model into B/S architecture system integration, utilized ArcGIS platform to achieve the visually dynamic display of water quality simulation results and the 2 matic map production, and then proposed the water quality risk assessment method from the water quality risk probability based on time step water quality simulation results. The method can provide the decision 2making basis for the water environment man2 agement.

河北省环境保护公益性行业科研专项( 14gy07) ; 国家科技支撑计划项目( 2011BAC12AB02)