According to the reasonable test materials,the authors have studied the active fracture structure framework in Huangshui basin,made the laser scattering simulation test,obtained the quantitative explicit results of the active fracture characteristics and used the results to evaluate regional crust stability.

Remote sensing interpretation and its characteristics of the forest and shrub vegetation in Huang Shui area,Qinghai Province;

Analysis on Characteristics of River Terrace and Plateau Evolvement of Huangshui River in Xining Basin;

Analysis on the Influence of Climate Variation to Runoff Depth of Huangshui River;

Analysis on ample flow and low water for upper reaches in Huangshui river;

The Qing Dynasty was a period of the sustained development of agriculture in Hehuang areas,a vast amount of land in rivers and creeks had been cultivated in the Qianglong period of Qing Dynasty.

This article probes mainly into the characteristics and cause for feudalization of Hehuang areas in Han Dyasty,and deems that carrying out the leap from the late period of primitive society to the feudal society in Hehuang areas in Han Dynasty depends on the special historical conditions and geographical circumstances at that time.