Study on Spatial Model of Land Use Based on CA - Markov Model after Returning Cropland to Forest

Abstract

At present, the frontier of global environmental change research is land use / cover change, and an important way to understand global land change is to analyze and study typical areas. In order to study the law and the driving mechanism of land use change in the loess hilly and gully region, this paper takes the county south ditch watershed as an example, takes the remote sensing image of the basin in 1995, 2005 and 2015 as the data source, combined with the topographic data, And the spatial and temporal dynamics of land use before and after returning farmland to forest in Nangou watershed was analyzed. Finally, based on the land use situation in 2015, a variety of CA criteria were used to carry out modeling analysis to predict the land use in 2025 Type of purpose. And thus hope for the region to implement the scientific implementation of the project of returning farmland to forest.