【摘要】 乌鲁木齐河流域在自然条件上具有干旱区内陆河所特有的垂直分带规律，为水资源转化创造了条件。水资源在转化和开发利用过程中，其矿化度和水化学组成都深深打上了自然和人为活动影响的烙印。乌鲁木齐河虽然流短水小，但天然水质的垂直变化明显。流域地表水和地下水矿化度较低，大都不超过１ｇ／１，是优良的供水水源。集中、频繁的人为活动对水质有较大影响，但绝大多数地区水的污染物质含量不超标。更多还原

【Abstract】 Like other inland basins in arid regions, there are naturally vertical zones which moder-ate water resources transformation in Urumqi River Basin. In the course of water resourcestransformation and utilization, the chemical composition and ion concentration will be influ-enced by both geographic conditions and human activities. Although the Urumqi River israther small in runoff and rather short in flow distance, the water quality changessubstantially along the river. However, ion concertrations of surface and ground water in thewhole basin are relatively low, generally less than 1g／l. So, the basin is a good source forproviding low-mineralized water. So far. The pollution is not so strong and the waterimpurity does not surpass the national standard for drinking. As long as people are consciouswith protecting water quality and reduce the further water pollution, the potential harm ofthe slightly polluted can be completely eliminated.更多还原