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1 水资源现状分析郑州市境内地表水资源量为8.67亿 m~3,全市平均每平方公里年产水量为11.6万 m~3,地表水资源人均为139.2m~3/a,每公顷平均为3934m~3/a。近几年来,郑州市的平均降雨量为47.34亿 m~3,均低于全省及全国的平均值。近年来,郑州市的城市建设迅猛发展,道路面积扩大,都市利用密度迅速提高,大量使用沥青和混凝土,地面的不渗透区域增加;同时,房地产的大幅度开发,农田、绿化和水面积减少,河道、水库、浅层地下水均受到不同程度的污染,地下水位不断下降,漏斗面积不断增加,给水资源和整个城市环境带来种种不良影响,而人口的不断增加,更加剧了供需矛盾,水资源的短缺已经阻碍了郑州市的发
1 Analysis of Water Resources Status The amount of surface water resources in Zhengzhou City is 867 million m ~ 3. The average annual output of water per square kilometer in the city is 116,000 m 3, and that of surface water resources is 139.2 m 3 / a, with an average of 3934m ~ 3 / a. In recent years, the average rainfall in Zhengzhou City is 4.73 billion m 3, both lower than the average of the whole province and the whole country. In recent years, the rapid development of urban construction in Zhengzhou City, the road area expanded, the use of urban density increased rapidly, extensive use of asphalt and concrete, impervious areas of the ground increased; the same time, real estate development, farmland, greening and water area reduction, The rivers, reservoirs and shallow groundwater are all polluted to varying degrees. The groundwater level is continuously declining and the funnel area is constantly increasing, which has adverse effects on water resources and the entire urban environment. However, the increasing population has exacerbated the contradiction between supply and demand. Water resources The shortage has hindered the development of Zhengzhou