Land Use Change And Driving Forces Research Of Luoyugou Watershed In Loess Plateau

In order to provide effective decision support for land use planning of fragile ecological environment in Loess plateau hilly-gully region, this paper studied the land use change and driving force of Luoyugou watershed which is the typical watershed of Loess plateau hilly-gully region in Tianshui City, Gansu Province. First, we interpreted and classified the satellite remote sensing images of Luoyugou watershed in 1986,1995 and 2004. Then we calculated the area change, extent of change and the transfer matrix of land use of Luoyugou watershed in study period. Then we used correlation analysis and principal component analysis to quantitatively study the driving forces of land use change in Luoyugou watershed. At last we apply the Markov chain model to predict the land use situation in 2013 of Luoyugou watershed. The results showing that:the conversion of slope farm land to the terrace and the forest land plays a dominant role in land use change of Luoyugou watershed from 1986 to 2004, and this process mainly took place between 1986 and 1995. The area of shrubs, grassland, residential areas and bare land changes weakly. In addition, the changes in land use mainly driven by the development of population and socio-economic and the consumers spending factor, also include the forestryecological construction. Finally, the prediction of the land use situation in 2013 of Luoyugou watershed shows that the proportion of forest land and residential areas is increasing, of which the forest land increased larger than the residential areas, and the other types of land are to decline, it shows that the government's input to the forstryecological construction in Loess Plateau hilly-gully region is increasing by years and the developing economic leading to the expansion of human activities in space.