| 深圳湾TIN和PO3-4-P数值模拟及减排效果分析 |
| 摘要点击 3308 全文点击 2115 投稿时间：2010-02-08 修订日期：2010-04-20 |
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| 中文关键词 深圳湾 EFDC模型 营养盐减排 海域功能区划 |
| 英文关键词 Deep Bay EFDC model nutrients reduction marine functional zonation |
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| 中文摘要 |
| 采用EFDC模型建立深圳湾三维水动力和营养盐模型，模拟总无机氮（TIN）和正磷酸盐（PO3-4-P）等主要营养盐在深圳湾不同水文条件下的输运规律.计算结果表明，TIN和PO3-4-P的计算值和实测多年月均值枯、丰水期都吻合较好.内陆河流TIN和PO3-4-P减排方案的计算表明，珠江口TIN提高至三类海水标准是深圳湾水体达标的前提；在珠江口三类水质条件下，不考虑降解作用，减排95%时深圳湾TIN和PO3-4-P基本达到三类海水水质标准功能区划的要求；考虑降解作用，减排83%时深圳湾可达到水体功能区划的要求. |
| 英文摘要 |
| Environmental Fluid Dynamics Code (EFDC), three-dimensional hydrodynamic and water quality models, are employed to simulate the transport of total inorganic nitrogen (TIN) and orthophosphate (PO3-4-P) in Deep Bay, China under different hydrologic conditions. It shows that, the computational results of TIN and PO3-4-P match very well with monthly-averaged field data in dry and wet seasons. The results of TIN and PO3-4-P reduction scenarios show that, it is necessary to reduce TIN concentration in Pearl River to Grade Ⅲ to guarantee TIN in Deep Bay comply with the marine functional zonation requirement of the standard of Grade Ⅲ. TIN and PO3-4-P concentrations in Deep Bay could comply with the marine functional zonation requirement if 95% TIN and PO3-4-P loading are reduced from the inflow when degradation ignores. When the degradation is considered, TIN could comply with the marine functional zonation requirement if 83% TIN loading are reduced from the inflow. |
