The current situation of water resources utilization: the contradiction between supply and demand of water resources is aggravating, water pollution is being serious and water crisis stands out. For the sustainable utilization of water resources, a series of countermeasures should be put forward, such as, to increase utilization radio of water resources; to build underground reservoir; to enforce legislation to protect water resources; to heighten the water protection consciousness of public.
Cu content in soils sampled from different sites in Tibet was analyzed.The results showed that the average Cu content of soils was 19.6mg·kg -1 ,lower than the average content in China.The content of Cu was distributed in Tibet with a total of gradually decreasing from the southeast to the northwest,which was consistent with the direction of change in the zonal successions of soil in Tibet.The variation of the content of Cu in the soils developed from different soil parent materials in Tibet was very remarkable,and the content of Cu in the soil developed from shale was greatly higher than that in the soil developed from other soil parent material.
