大亚湾沉积物中^(137)Cs的环境容量研究  

Study on Sediment Environmental Capacity of ^(137)Cs in Daya Bay

作　　者：张俊丽[1] 陈家军[1] 许嘉琳[1] 李源新[2] 黄乃明[2] 

机构地区：[1]环境模拟与污染控制国家重点联合实验室北京师范大学环境科学研究所,北京100875 [2]广东省环境辐射研究监测中心,广东广州510300

出　　处：《环境科学研究》2005年第3期11-14,共4页Research of Environmental Sciences

基　　金：广东省环境保护局科技攻关项目(粤环1999-31)

摘　　要：参照水、土壤环境容量研究方法,提出沉积物环境容量的定义,并根据系统中物质平衡理论建立模型,对大亚湾沉积物中的137Cs环境容量进行了研究,计算了大亚湾内表层沉积物中137Cs的静容量,并选择代表性生物,计算了近岸区的年动容量和总动容量。结果表明,计算得出的环境容量接近于目前沉积物中137Cs年输入量,在控制年限内,将沉积物的输入量控制在该环境容量范围内,是大亚湾沉积物生态系统维持目前状态,不会出现明显恶化的保证。Based on the methodology of study on water, soil environmental capacity and mass conservation theory in a system, the concept and model on sediment environmental capacity for ^(137)Cs in Daya Bay are developed. The static capacity for ^(137)Cs in upper layer of sediment near shore at shallow area is calculated, and the annual dynamic capacity and total dynamic capacity are given through determination of typical biomass in the sediment. The results show that the estimated environmental capacity for ^(137)Cs in sediments is approximately equal to current input of ^(137)Cs into the sediments, and to control the input of ^(137)Cs in the sediments within the environmental capacity is the guarantee for sustaining of current situation of Daya Bay eco-system and avoiding of obvious degradation of the eco-system.

关 键 词：沉积物 环境容量 大亚湾 ^137CS 

分 类 号：X55[环境科学与工程—环境工程]