Analysis and Prediction of Land Use Dynamic Change in Pisha Sandstone Area of Ordos Plateau in China in Recent 20 Years

Abstract

The study on landuse dynamic change takes an important position in global and regional environmental change and sustainable development research. In this study, the Ordos Pisha sandstone area in China was selected as the research object. The landuse type maps for different time frames were obtained by remote sensing classification method, and the change information was extracted for analysis and prediction of variation of landuse from the aspects of area, structure and dynamic change. Studies have shown that: (1) The total area of landuse has remained the same for 20 years recently. (2) The urban construction intensity of the area has been growing year by year, and the increased construction land is mainly from grassland. (3) Dynamic changes in construction land are the main factors affecting landuse change in the area. (4) If the rate of change remains the same, by 2030, the area of farmland, woodland, grassland, waters, construction and un-utilized land in Pisha sandstone area will be 3242.70km2, 870.82 km2, 10014.68 km2, 467.14 km2, 1157.06 km2, 993.48 km2, respectively. The research results can help fully understand the characteristics and trends of landuse change in this area, and provide effective scientific and technological support for regional ecological environmental protection and sustainable landuse.