吕梁市地表水水质状况及保护

On Situation Protection of Surface Water Quality in Lüliang City

吕梁市地处黄土高原干旱半干旱区,地表水量不但贫乏,而且不同程度地受到污染。据全市主要河流17处监测河段的水质监测结果表明,地表水污染十分严重。究其原因,主要是工业废水、生活污水不达标排放以及土壤中残留化肥、农药随农业回归水、降雨径流进入水体而造成污染。因此,要从严格控制污染源、合理布局工业、加强监测、提高保水意识等方面来保护地表水,以缓解水资源短缺矛盾。

The Ltiliang City is located in the arid and semi-arid loess platean zone. The surface water resources are scarece and are polluted in different drgrees. The monitored results of water quality in 17 sections of main river reachs in the whole city indicate that the pollution of surface water is very severe. The causes of pollution are：1） The emission of industry wastewater and domestic sewage is not up to the draining standard,2） The residul chemical fertilizer and pesticide in soil are drained into water body in pace with the agriculture return flow and rainfall runoff. Therefore,the surface water must be protected from following aspects such as：strictly controlling pollution sources,reasonably arranging industry,strengthening monitoring,raising consciousness to protect surface water,to relax contradiction of water resource lacking.