Study On The Land Use Change And Its Driving Forces Of Lanzhou

Land use change is an important part of global environmental change, and one of the major reasons.Since the beginning of the new century, Land use change research has been in the forefront of research and geographic related disciplines hot.The environment change one of the important reasons is caused by land use, but the Land use is limited by many factors dominating, so research the land use change and the relationship between the driving force,and revealed its laws need to become a reality.This text is to take Lanzhou as an example, with type second classly for research object,through its analysis of the dynamics night years(1997～2005),from different angles revealed the identity and category changes.We can see from the variety characteristic, the farmland and land residents and the work mineral is allly with the ground to change the two that range is biggest in the type.The thesis analyse land use change from quantity and space. The result show not only zone but also districts of land exsist difference.In the land use change on the basis of its natural and socio-economic driving force analysis. Take the geography as the- land use change of the mainly drive of the variety in the natural factor. This research adopts the analytical and related analysis to made use of the social economy of the variety to drive the factor to carry on the analysis to the land. The results of the analysis show: From the 1997 to 2005, drive the dint index number is divided into two obvious stages variety characteristic; And the population, economic develop, urbanization, industrializes the related social economic factor is land use change of mainly drive the factor. Moreover, the administration and development plan factor is also the important driving factors of land use change, in a certain period of time it will play a specific role.The paper proposes two plans with the gray system and regression analytical method; determines the regression analytical method forecast result is an optimum value with the comparison between information entropy and the even weights and measures theory; obtains the conclusion that in the near future, gradually along with the information entropy of Lanzhou land utilization structure, the even weights and measures will also be rising gradually, as a result, the order of the land utilization system will be decreasing gradually. Finally, the thesis puts forward some policy advises from the aspects of population, economy. industry structure, people's living level,a gricultural technic, land use structure land exploitation and reajustment, and so on.