Due to the droughts in Northwest and a grave shortage of surface water in karst regions in Southwest,the development and utilization of ground water is of vital significance for the life and production of local people.

• 由于西北干旱地区和西南岩溶地区地表水严重匮乏，地下水的开发利用对于当地人民的生产、生活都具有相当重要的意义。