CAJ | 학술논문

以地下水污染调查数据为基础，结合历史观测资料，揭示兰州市城市化过程中地下水水位、水质的变化特征及其影响因素。城市污水排放、蓄水设备修建及农业灌溉等因素使垂直渗入补给量增加，引起地下水上升，其中西固区地下水位上升剧烈，受地下水开采的影响，水源地地区形成大面积的地下水降落漏斗，水位下降显著；兰州市区地下水水质影响因素较多，土地利用类型的改变带来污染源强的增加、城市垃圾处理方式以及水位下降等是直接或间接地造成地下水质恶化的重要因素，老城区和工业区地下水总硬度、NO3-、氟离子、有机组分等指标呈逐年上升趋势，污染形势严峻。
이지하수오염조사수거위기출，결합역사관측자료，게시란주시성시화과정중지하수수위、수질적변화특정급기영향인소。성시오수배방、축수설비수건급농업관개등인소사수직삼입보급량증가，인기지하수상승，기중서고구지하수위상승극렬，수지하수개채적영향，수원지지구형성대면적적지하수강락루두，수위하강현저；란주시구지하수수질영향인소교다，토지이용류형적개변대래오염원강적증가、성시랄급처리방식이급수위하강등시직접혹간접지조성지하수질악화적중요인소，로성구화공업구지하수총경도、NO3-、불리자、유궤조분등지표정축년상승추세，오염형세엄준。
Based on data of groundwater pollution survey and historical observation , this paper revealed the variation characteristics and its influencing factors of groundwater levels and quality in Lanzhou .Ur-ban sewage discharge , water storage construction , agricultural irrigation and other factors increase the vertical infiltration recharge of groundwater which caused groundwater level to rise especially in Xigu dis -trict.Affected by groundwater exploitation , the water source regions formed a large area of groundwater drawdown funnel , the water level dropped significantly .There are many factors affecting groundwater quality in Lanzhou city .The change of land use type caused the increase of pollution sources , the disposal method of urban waste and the groundwater drawdown are important factors which caused deterioration of groundwater quality directly or indirectly .The indexes of groundwater such as TH , NO3-, F-and organic compounds show an increasing trend in old city and industrial zone .The situation of pollution is grim .