气候变化对地下含水层总氮污染物的影响——以海河流域片平原区为例

发布时间：2019-05-20 01:32

【摘要】：地下水是战略性的水资源,在国民经济和社会发展中具有重要的地位。随着人类活动的不断加剧和气候变化等不确定性条件的存在,地下水超采和地下水污染日益严重,直接威胁着重要的战略性水资源。本文旨在研究气候变化如何影响地下水环境。本文以地下水最常见污染物总氮为研究对象,以地下水污染严重的华北平原为研究区域,搭建了包含"二元"水文模型、地表水环境模型、地下水流模型和污染物运移模型的地下水综合模拟框架。根据水流和污染物运移的特征,应用地下水综合模拟框架模拟预测未来气候变化情景下的地下水氮污染情况。根据研究,在A1B情景下,地下水总氮污染情况严重,危及北京市、天津市、唐山市地下水供水安全;A2情景下,地下水总氮污染情况相对较好,但是北京市部分含水层已不适合作为饮用水,B1情景下,区域地下水总氮污染情况最好。
[Abstract]:Groundwater is a strategic water resource, which plays an important role in national economic and social development. With the increasing of human activities and the existence of uncertain conditions such as climate change, groundwater overexploitation and groundwater pollution are becoming more and more serious, which directly threatens the important strategic water resources. The purpose of this paper is to study how climate change affects groundwater environment. In this paper, the total nitrogen, the most common pollutant in groundwater, is taken as the research object, and the North China Plain, which is seriously polluted by groundwater, is taken as the research area to build a "binary" hydrological model and a surface water environment model. Groundwater comprehensive simulation framework of groundwater flow model and pollutant transport model. According to the characteristics of flow and pollutant transport, the comprehensive simulation framework of groundwater is used to predict the nitrogen pollution of groundwater in the future climate change scenario. According to the study, under the A1B scenario, the total nitrogen pollution of groundwater is serious, which endangers the safety of groundwater water supply in Beijing, Tianjin and Tangshan. Under A2 scenario, the total nitrogen pollution of groundwater is relatively good, but some aquifers in Beijing are no longer suitable for drinking water. In B1 scenario, the total nitrogen pollution of groundwater in the region is the best.
【作者单位】：中国人民大学环境学院;中国社会科学院数量经济与技术经济研究所;
【基金】：国家社会科学基金青年项目(13CGL091)
【分类号】：P467;X523

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