The changes about studies on drought in Northwest China are briefly reviewed in this paper.

Based on discussion of formation possibility of reduction sandbody in the present and ancient arid condition, the conditions of the formation and preservation in arid environment of the sand-body, which prospect the sandstone-type uranium controlled by interlayer oxidization zone or ancient channel, is analysed preliminary in this paper.

The paper deals with drawing and interpreting NOAAsatellitedata aboutlargescale arid environment.

Technique of Paraffin section has been used to observe the vegetative organs microstructure of Senecio vulgaris Linn in order to discuss its adaptability characteristics to arid environment.

Study on Rational Allocation of Water Resources in Northwest Arid Region Based on Ecology;

Northwest arid area is one of areas that will be exploited in the great development of West China.

The northwest arid area of China,having about 1/4 of the total area o f China,is located near the center of the Eurasian continent.

Although northwest arid area is a large agricultural region which is rich in resources, but ecological environment there is very weak, the conflict between developing economy and protecting environment is going sharper and sharper.

Both oasis development and desertification and both human advance but desert retreat and desertadvance but human retreat existed in the evolution processes of the ecological environment in the arid areas innorthwest China during the historical periods.

The feature and the exploitation and utilization situation of water resource in northwest arid area of China was summarized.

The arid area of northwest China is one of the areas that will be exploited during the massive development of west china.