Calculation methodology of marine environmental capacity for heavy metal:A case study in Jiaozhou Bay,China  

作　　者：LI KeQiang WANG XiuLin 

机构地区：[1]Key Laboratory of Marine Chemistry Theory and Technology,Ministry of Education [2]College of Chemistry and Chemical Engineering,Ocean University of China

出　　处：《Chinese Science Bulletin》2013年第2期282-287,共6页

基　　金：supported by the Science Fund Projects of Shandong Province(ZR2010DM005);the National high Technology Research and Development Program(2010BAC69B01);Science and Technology Development Plan of Qingdao(11-2-3-66-nsh and 11-2-1-18-hy)

摘　　要：Results from past pollution control practices show that environmental quality can be ensured by controlling the actual amount of pollutants formed in the environment.Therefore,the marine environmental capacity for heavy metals was introduced.Marine environmental capacity for heavy metals is defined as the maximum amount of heavy metals permitted in the marine environment system to preserve the benign cycle of materials in the oceansphere,and to limit the adverse effects of heavy metals on the biosphere,hydrosphere,atmosphere,and lithosphere.Based on the box or three-dimensional model in the target coastal region,including the self-purification and output of heavy metals,the marine environmental capacity for heavy metals can be calculated within a given criterion and time.In this study,a method was proposed to calculate the marine environmental capacity for heavy metals which includes four steps:(1) gathering the basis information of target coastal ecosystem,(2) selection of water control points and water quality criteria for these points,(3) development of numerical models for the biogeochemical cycling of heavy metals in target coastal region,and(4) calculation of environmental capacity using the developed model.According to the proposed method,the marine environmental capacity for lead is approximately 60 tons per year if Grade I seawater quality is set as the control criterion in Jiaozhou Bay.An effective seawater quality management plan can also be framed based on the environmental capacity for metals.Results from past pollution control practices show that environmental quality can be ensured by controlling the actual amount of pollutants formed in the environment. Therefore, the marine environmental capacity for heavy metals was introduced. Marine environmental capacity for heavy metals is defined as the maximum amount of heavy metals permitted in the marine environment system to preserve the benign cycle of materials in the oceansphere, and to limit the adverse effects of heavy metals on the bio- sphere, hydrosphere, atmosphere, and lithosphere. Based on the box or three-dimensional model in the target coastal region, in- cluding the self-purification and output of heavy metals, the marine environmental capacity for heavy metals can be calculated within a given criterion and time. In this study, a method was proposed to calculate the marine environmental capacity for heavy metals which includes four steps： （1） gathering the basis information of target coastal ecosystem, （2） selection of water control points and water quality criteria for these points, （3） development of numerical models for the biogeochemical cycling of heavy metals in target coastal region, and （4） calculation of environmental capacity using the developed model. According to the proposed method, the marine environmental capacity for lead is approximately 60 tons per year if Grade I seawater quality is set as the control criterion in Jiaozhou Bay. An effective seawater quality management plan can also be framed based on the environmental capacity for metals.

关 键 词：环境容量 海洋环境 重金属 胶州湾 计算 生物地球化学循环 沿海生态系统 案例 

分 类 号：X834[环境科学与工程—环境工程]