项目名称: 电子垃圾拆解地区重金属污染的时间、空间和食物链传递三维尺度效应
项目编号: No.41201538
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 地理学
项目作者: 傅伟军
作者单位: 浙江农林大学
项目金额: 25万元
中文摘要: 电子垃圾引起的环境问题是当今环境领域研究的一个热点。国内外学者开展了大量电子垃圾拆解环境中有机污染物的研究,而关于此环境中重金属污染的时空演变规律和食物链传递效应的研究却鲜见报道。本项目以典型电子垃圾拆解地区- - 浙江省温岭市为研究区域,分析不同时期(2000年、2006和2013年)土壤重金属的累积特征和污染趋势,着重分析土壤重金属形态的变化和生物有效性(时间尺度效应);采用多种空间分析方法,结合GIS技术,研究土壤重金属的空间分布格局和空间污染尺度(空间尺度效应);在水稻重金属空间变异性分析和污染风险评价基础上,研究土壤-水稻系统重金属的空间对应关系和立体污染特征,分析污染驱动因子(食物链传递效应),为研究区土壤污染治理提供理论依据,对水稻安全生产进行指导帮助,为其它电子垃圾拆解地区的土壤质量评价及农作物安全生产布局提供借鉴,对于全面提升农产品安全和产地环境质量的整体水平具有重要意义。
中文关键词: 电子垃圾;重金属;土壤-水稻系统;时空变异;迁移模型
英文摘要: Environmental problems caused by E-waste is one of the hot issues in environmental research areas. A lot of work has been carried out to study the organic pollutants and its harm to human being's health in E-waste dismantling areas, while little work is related to the spatio-temporal variation of heavy metal pollution and its effect on food chain. The E-waste dismantling area in Wenling, Zhejiang Province, will be chosen in this research. The aims of the research are to analyze the accumulation characteristics and pollution tendency of soil heavy metals at different periods(2000year、2006year and 2013year), with more attention given to focus on the variation of heavy metal fraction and its bioavailability (temporal-scale effect); to study the spatial variation and spatial patterns of soil heavy metal pollution with a variety of spatial analyses and GIS technology(spatial-scale effect); to discuss the spatial correlation and multi-dimension pollution characteristics of heavy metals in soil-rice system,based on the analysis of spatial variation of heavy metals in rice and its potential risk evaluation, to identify the main driving factors between production environment and rice heavy metal pollution(food chain transfer effect). The results will be used to provide theoretical basis for soil pollution control; to gui
英文关键词: E-waste;Heavy metals;Soil-rice system;Spatio-temporal variation;transfer model