Study on stratagey of developing water resources in China's Northwest areas

China's Northwest areas are located in the arid inland with the rare rainfall and wicked environment.Water is the key factor to the sustainable development of China's Northwest areas.The beautiful water environment can take when the rational disposition,unified management and efficient utilization of water resources occupy the first place,the relations are coordinated well among population,resources,economy and environment,the water saving society is established and the environmental construction is emphasized.