| 摘要: |
| 在一维与三维耦合水动力、悬沙模型的基础上, 构建了珠江三角洲一维与三维耦合水质模型。模型中包括浮游植物-氮-磷-碳-溶解氧循环, 并考虑颗粒物在底泥与水体界面的再悬浮过程。选择了三个代表性时段(1999 年 1 月、 1999 年 7 月与 2000 年)进行水质模拟, 并采用相应水期的实测资料进行验证。 结果表明, 耦合水质模型计算效果良好, 较好地再现了整个研究区域内各水质要素的时空分布规律, 成功描述了珠江三角洲河网与河口区的动力与生物化学变化过程。 |
| 关键词: 珠江口, 感潮河网, 数值模拟, 一维与三维耦合水质模型 |
| DOI：10.11693/hyhz201201001001 |
| 分类号: |
| 基金项目:广东省近岸海洋综合调查与评价(908 专项)子课题: “珠江口主要环境问题分析与对策”资助项目, GD908-02-03 号 |
|
| DEVELOPMENT AND VALIDATION OF A COUPLED ONE- AND THREE-DIMENSIONAL WATER QUALITY MODEL FOR THE PEARL RIVER DELTA |
|
HU Jia-Tang, LI Shi-Yu, PEI Mu-Feng, GENG Bing-Xu
|
|
Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, School of Environmental Science and Engineering, Sun-Yat Sen University
|
| Abstract: |
| A coupled one- and three- dimensional water quality model in the Pearl River Delta (PRD) was developed based on a coupled hydrodynamic-sediment model. The coupled water quality model consisted of five interacting systems: phytoplankton dynamics, nitrogen cycle, phosphorous cycle, carbon cycle, and dissolved oxygen balance. Resuspension of particulate matter at the sediment-water interface was also included. Three representative periods, including January 1999, July 1999 and the year 2000, were simulated using the coupled model, which was then validated using different field data sets. The model results were in reasonable agreement with the observational data in both wet and dry seasons. The coupled model was capable of reproducing reasonable patterns and acceptable magnitudes for the water quality variables, suggesting that the coupled model was sufficiently robust to capture physical and biogeochemical dynamics in the PRD. |
| Key words: rl River Estuary, Tidal river network, Numerical simulation, 1-D and 3-D coupled water quality model |
