Quantifying urban land cover and impact on land cover in China using GLCNMO urban and DCW

Resource utilization issues, and development of methods for effective gauging of stocks and use of land resources, are becoming increasingly important, especially in China. Agricultural production, the extent of arable land, and land use are such key resource issues. Using derived products from GLCNMO urban (Urban areas were extracted using population density data, MODIS-NDVI data, and DMSP-OLS data. Common areas after threshold processing for these data were assigned as urban area. The main input data is population density data. MODIS-NDVI was used to exclude large green area such as park in populated area. DMSP-OLS was used to exclude villages in developing countries with large population) DCW urban and China land cover map; we examined the impacts of urbanization on land cover in China. The study analyzes urban expansion at provincial scale base to conceive dynamic patterns of urban changes. The study calculated the urban land percentage and urban land expansion index of every 1km2 cell throughout China. Urbanization accounted for more than half of the transformation from cropland to other land uses. The analysis of the study proved that GLCNMO urban datasets were reliable for long term urban growth estimates.