Study On Population Space-time Distribution Features Based On GIS

Population distribution is a spatial phenomenon in a certain historical development and the historical development of population always varies with a certain geographical and spatial environment. They depend on and interrelate with each other, and have their own characteristics. The development of population interrelates closely with each other in terms of time and space. The spatial distribution of population on the time axel should be taken into consideration, especially for the future use to forecast population distribution.GIS theory and technology are employed to analyze the quantitative relationship between population distribution features and relative natural & economic factors. New indexes are proposed and population distribution model is established in the research. Principal component analysis of spatial statistical analyzing methods in GIS is adopted to evaluate if the distribution is reasonable, and population pressure indexes are put forward with the resolving strategies discussed.Mathematical model on the interactive relationship between population migration, population pressure and other economic indexes is established according to geographic theories. Population migration forecasting method is proposed through testing the real data by the model, which gives a new line for forecasting population migration in different regions.The study on the relationship between population distribution and economic development is made by employing GIS. Differential equations of population and economic growth are provided and the coordinating factor revealing the dynamic mechanic between population distribution and economy is given in the thesis. R/S analyzing method and forecasting by gray gray number are introduced in population-projection. The concept that the future population distribution model should be forecasted after predicting the current population quantity is put forward based on GIS.