Abstract:

The research on driving mechanism of land use change has been a hot spot in geography， and the research on relationship between land use change and influencing factors is a key for revealing driving mechanism of land use change. Jiaodong region in China witnessed rapid socical and economic development from the 1980s to 2000. Study on relationship between land use change and influencing factors in this region has important theoretic and practical significance. Vector data of land use of Jiaodong region in the 1980s and 2000 were overlaid each other， and the regions of land use change were obtained. The area of major land use conversion types and their proportion to total change area were calculated and the matrix of land use change samples was constructed. The data of land use change and the data of urban site， road， DEM， population density， GDP and coastal line were overlaid respectively， influencing factors of land use change spots were obtained， and the matrix of influencing factors of land use change was constructed. Based on these data， Canonical Correspondence Analysis (CCA) was used for revealing the relationship between land use change and influencing factors. The study result showed that urbanization， expansion of construction land and substantial decrease of farmland were the main characteristics of land use change in Jiaodong region from the 1980s to 2000. Population density， the distance between land use change site and urban site， elevation， and the distance between land use change site and main road were the main influencing factors for distribution of major land use conversion types， and the next were GDP and the distance between land use change site and costal line. The conversions of farmland to urban land and rural residential land to urban land were mainly in the areas near urban sites and main roads with high population density and high GDP. The conversions of farmland to rural residential land were mainly in the areas near urban sites and main roads with lower elevation.

Key words: CCA, influencing factors, Jiaodong region, land use change