摘要
沈阳市具有良好的供水水文地质条件,按区域水文地质条件及沈阳市农业区划的要求,可划为四个水利分区。由于地下水资源的采补失调和严重过量开采,沈阳市中心城区形成了较大面积的地下水超采漏斗,由西部和东部两大超采区组成。2001年,沈阳市地下水水位呈下降趋势,到2005年,全市枯水期超采漏斗分布面积有所缩小,丰水期地下水超采漏斗分布面积有所增大。“十五”期间,沈阳市的地下水水质仍是以“三氮”污染为主,同时存在着铁、锰超标现象。“三氮”污染主要集中在浑河流域。各主要污染物在2001—2005年期间变化稳定,趋于平稳。
The Shenyang city has good hydrological and geological conditions, which can be divided into four sub areas according to the request of the hydrological and geological conditions and the layout of the farm belt. In terms of the maladjustment between the exploitment and the supplement of the groundwater, the central area of the Shenyang city has formed a over - exploited filler of the groundwater, which is consisted of the two big over - exploited areas in the east and the west. In 2001, the water level of the groundwater in Shenyang had taken on a descended tendency. By 2005, the distribution area of the over - exploited filler of the Shenyang city in low - water period had lessened a little, while in high - water period the area had increased a little. During the tenth five - plan period, the groundwater quality of the Shenyang city is mainly polluted by the ＂three - nitrogen＂, following the iron and the manganese that exceed the standard. The ＂three - nitrogen＂ pollution is mainly centralized in the Hunhe river valley. The main pollutants had presented a calm state.
出处
《环境科学与管理》
CAS
2007年第4期61-63,共3页
Environmental Science and Management
关键词
地下水
污染特征
变化趋势
groundwater
pollution feature
tendency to change
