Research On Dynamic Monitoring Of Land Use Change Based On RS And GIS

Land resource is basic for human survival,all human activities and build up strength,also foundation for socio-economic sustainable development.With population growth, food shortages, environmental pollution, climate variability and a series of global issues to increase, global change research has gradually increased land use / cover change research. Land is the interaction between human activities and natural interface. On the one hand, land use change is an objective record of the human disturbance to nature; on the other hand, change is basis of the human recognize process of earth system .Human change the Earth's land surface cover conditions of the man and land through the development and utilization of natural resources, and its impact on the ecological environment is not only limited to local,but also make more profound affect to regional water cycle, environmental quality, biodiversity and productivity of terrestrial ecosystems, thereby affecting the whole environmentResearch on land use change is the frontier and the hot spots in the global change research, and research on regional land use change and its driving forces is one of the most important parts. The remote sensing technology has been applied in land use monitoring for more than 20 years in our country. The purpose of such dynamic monitoring method is two fold. One is to detect the dynamic variation of land use with the remotely sensed image. The other is to analyze the influencing factors of land-use changes, the dynamic process and its development trend as well. In this paper, we use Landsat TM image data of Dujiangyan in the year 1994,2007 and 2008 to finish the dynamic monitoring of land use change based on the methods of Remote Sensing(RS) and Geographic Information System(GIS).Moreover, the land use change development and the variation tendency for 14 years of Dujiangyan are analyzed and predicted by introducing the Models of of land use conversion matrix, single land use dynamic degree and single land use dynamic exchange degree .These models are applied to describe clearly the state of land use types which is in the inflation or degradation.during 1994-2008,including the land damage in earthquake. Then use Markov model has been used to predict the tendency of land use of Dujiangyan in the future 65 years .Based on this, analysed the driving influence. In the end, I put forward some solutions to the existing problems of land use change in Dujiangyan.