Analysis on Dynamic and Pattern of Land Use/Cover Change in Guanzhong Area

【Objective】Understanding the process and pattern of regional land use and land cover change is essential for intensive and highly efficient,scientific and rational utilization of land resources.【Method】Based on technology of remote sensing(RS) and geographical information system(GIS),various land-use change models such as Markov transfer matrix model,amendatory land use dynamic model as well asland use degree change model were applied to simulate and analyze the scenario of land use changes from 1990 to 2007 in Guanzhong Area.【Result】The results showed that the land use change in Guanzhong Area was obvious and complicated.And mutual inverse of land use transfer among arable land,forest land and grasslands was happened almost simultaneously in space,especially during the former period(1990-2000).During the latter period,however,land use change was more orderly and stable.The amount of arable land changed into construction land from 1990 to 2007 was 183.3 thousand hm2,and most of them happened in Guangzhong basin area,and during the latter period.Index of amendatory land use dynamic can indicate intensity of land use changes,which also could be used to compare rates of land use changes in different districts and to imply the order degree of land use change in some area during certain period.【Conclusion】The land use policy and economic benefits are the main drivers of regional land use change.To strengthen protection of arable land in the central Shaanxi basin,and to stabilize and promote ecological restoration and construction in the North Wei plateau and Qinling-Guanshan mountains are key links of land utilization in the future.