This paper,based on the comparison and analysis between bedrock water and pore water,puts forward the distribution, hydrodynamical and hydrochemical properties of bedrock water, points out that the movement of bedrock water is characterized by the tendency of uniforrn level,selective flow and confluence,and draws the conclusion that the seepage theory is not applicable to bedrock water.

System Lag Characteristic of Peasant Movement and System Innovation;

In the recent years,Tibetan plateau s nomads mobility tends to speed,being different from the floating mode of population in our country s eastern coastal areas,it has the obvious introversive type character of populations to concentrate,this kind of mobility has particular request to township construction in nomadic areas.

Structure and action:an analysis of migrants social network;

In the context of social transition,social identity of the migrants is turning passive to active.

Through analyzing the questionnaire data of 383 migrants in Nanjing, the thesis deal with some factors which influence their self- identifications in the institutional transition period.