城市绿地再生水灌溉生态风险评价与调控措施研究

项目名称： 城市绿地再生水灌溉生态风险评价与调控措施研究

项目编号： No.41271501

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 陈卫平

作者单位： 中国科学院生态环境研究中心

项目金额： 75万元

中文摘要： 为改善环境质量和缓解区域水资源危机，我国已有多个城市建成或在建再生水回用工程。作为再生水利用的一种主要途径，城市绿地再生水灌溉发展迅速，其风险也广受关注。本项目拟以我国再生水利用发展较快的北京市为研究区，以城市绿地为研究对象，结合野外实地采样分析和室内模拟，运用ENVIRO-GRO、STEM和HYDRUS模型模拟研究不同再生水灌溉条件下盐、氮、重金属和新型污染物等典型污染物在土壤生态系统中的运移规律和影响因素，明晰长期再生水灌溉下典型污染物的土壤累积特征和地下水迁移风险，评价再生水灌溉的土壤承载力，开发再生水灌溉风险评价与管理模型，为北京市再生水的安全可持续利用提供科学和技术支撑，相关研究结果也可为我国其他地区再生水利用的生态风险研究提供借鉴。

中文关键词： 盐分；氮素；药品及个人护理用品；再生水；生态风险

英文摘要： In many cities, reclaimed water reuse projects have been built or in planning to overcome the regional water shortage.Landscape irrigation is one of the main reuse catologies. Ecological risks associated with landscape reclaimed water irrigiaton have drawn a great deal of attentions. In this project, we selected Beijing as the study area, which has been leading the reclaimed water reuse in China.Combining with field invesigation, laboratory analysis and lysimeter simulaiton,fates and transport of representive polluatants including salts,heavy metals,nitrogen and emerging contaminants in the soil-water-plant system will be studied by dynamical models of ENVIRO-GRO,STEM and HYDRUS.Factors affecting their fates and transport including the reclaimed water quality, irrigation practices, soil and plant properties will be analyzed. Ecological risk asscoiated with long-term recliamed water will be assessed based on the field investigation and model simulation results.Loading capacity of reclaimed water to be reused for landscape irrigation will be evaluted. A risk management model will be developed. The research can provide scientific and technology supports for regional pollution risk management of urban green lands irrigated with reclaimed water, and provide examples for risk assessment studies.

英文关键词： Salts；Nitrogen；Pharmaceutical and personal care products；Reclaimed water；Ecological risk