基于非线性规划的莱州湾营养盐环境容量计算  

Environmental Capacity Calculation of Nutrients in the Laizhou Bay Based on the Nonlinear Programming

作　　者：虞兰兰 陈艳丽[1] 张海宁[1] 杨波[2] 江文胜[2] 虞洋[3] 

机构地区：[1]国家海洋局北海信息中心,山东青岛266061 [2]中国海洋大学物理海洋实验室,山东青岛266100 [3]海军北海舰队海洋水文气象中心,山东青岛266003

出　　处：《海洋科学进展》2016年第2期304-312,共9页Advances in Marine Science

基　　金：2015年北海分局海洋科技项目--海洋站海冰观测资料的质控方法研究与初步应用(2015B14)

摘　　要：在前人研究的基础上提出了基于非线性规划的排海通量最优化法(简称非线性规划法),以进行海域内非保守物质环境容量计算,并选取莱州湾这个水动力较强、面积较大的半封闭海域进行模拟、计算。为更好地保护生态环境,对于氮(N)、磷(P)等非保守物质(以无机氮(DIN)、无机磷(DIP)为例进行分析),选取其月最高浓度场数据,依次计算出莱州湾海域每个月的营养盐响应系数场,并进一步使用非线性规划法求解出营养盐的月环境容量。最终计算结果显示,21世纪初莱州湾的营养盐环境容量为:在保持莱州湾DIP排放现状不变的前提下,其DIN年环境容量为21 843t/a,剩余年环境容量为-8 264t/a,需要减少点源DIN的排放量;而在保持莱州湾DIN排放现状不变的前提下,其DIP年环境容量为1 794t/a,剩余年环境容量达1 485t/a,可继续容纳部分DIP的排放。In order to calculate the nutrients environmental capacity（EC）of nonconservative substances in the sea,the nonlinear programming method was proposed based on the previous studies.The Laizhou Bay with stronger hydrodynamic force,larger and semi-closed sea area was selected for simulation and calculation.In this study,the data of highest monthly concentration field of nonconservative substances such as nitrogen and phosphorus（DIN and DIP）were selected to calculate the monthly nutrient response coefficient field in Laizhou sea area,and the monthly nutrient EC was obtained by using nonlinear programming.The results showed that the nutrient EC in Laizhou Bay in early 21 st century could be as below.In the context of DIP discharge unchanged,the DIN EC in the bay is 2 1843t/a and DIN SEC is-8 264t/a,suggesting the DIN discharge of source point should be reduced.In the condition of DIN discharge unchanged,the DIP EC in the bay is 1 794t/a and DIP SEC is 1 485t/a,suggesting the discharge of DIP could be partly accommodated.

关 键 词：营养盐 莱州湾 非保守物质 环境容量 非线性规划 

分 类 号：X834[环境科学与工程—环境工程]