兰州市城市供水现状评价及可持续发展对策研究

兰州市辖3县5区,总面积1.3万km2。位于陇西黄土高原西部,海拔1 500~3 500m,地势总体上表现为西南部高、东北部低。广覆黄土的低山丘陵及其夹峙的河谷平原,构成了本区的基本地貌景观。平原区生态地质环境较好,特别是河谷平原内的一、二级阶地,具有地形平坦、地势开阔的优越条件,是人类生产与生活最佳地段、也是人口相对密集的区域,如兰州黄河河谷平原、永登庄浪河谷平原、榆中盆地、秦王川盆地等。本文剖析,评价其供水现状,提供可持续发展的对策,具有重要意义。

APPRAISE OF CITY WATER SUPPLY SITUATION OFLANZHOU AND SUSTAINABLE DEVELOPMENTCOUNTERMEASURE RESEARCH

The Lanzhou city governs three county and five areas,total area 13,000 square kilometers.It is located western of the Longxi loess plateau,elevation 1 500-3 500 meters.The topography displays as a whole for the southwestern part high and northeastern part low.The low mountain and knoll which is covered loess broadly and Its clamps river valley plain,which constituted the basic landform and landscape of this area.Ecology geology environment of this region is good,and specially in the river valley plain one and two stage place,has the topography smoothly,the topography open excellent conditions,and which is the human production and the life best land sector,also is the population relatively crowded region,like Yellow River river valley plain in Lanzhou,Zhuanglang river valley plain in Yongdeng,Yuzhong basin,Qin Wangchuan basin and so on.