Research on Jiuquan-Jiayuguan-Yumen region s dynamic evolvement of urbanization;

Jiaxing area belongs to representative lacustrine plain zone.

Finally, the paper suggests that to solve the various problems related with new residents\' service management must rely on the existing resources and reinforce the service management to help new residents melt into the new environment, thus to guarantee the economic development and social stability in Jiaxing area.

Estimation of N loss loading by runoff from paddy field during submersed period in Hangjiahu area.;

Hangjiahu area suffered from high temperature and drought from June to September,2003.

Investigation on economic status,urbanization,industry structure,farming system,population and resource contradiction,disaster occurrence in Hangjiahu Region during the periodfrom late Ming Dynasty to late Qing Dynasty were conducted based on Web database.

By taking one drinking water plant in Hangjiahu region as a case,the division of drinking water source conservation area based on EFDC model is conducted,which provide references for protection and construction of drinking water source conservation area.