Change tendency and relevant analysis about cultivated land and population in Loess Plateau during about 300 years

By using the data of cultivated land areas and population of every ten years in Loess Plateau from 1700 to 2005,which was extracted from the HYDE(version 3.1) database,the relevant model of cultivated land and population was built by statistical analysis method.On this basis,the variation tendency of cultivated land and population,spatial differentiation characteristic,change trend of the relevance between cultivated land and population and its spatial differentiation in Loess Plateau during nearly 300 years were analyzed.The results indicated: cultivated land area and population in Loess Plateau increased with fluctuation,and the change speed is uneven;there existed the positive correlation between cultivated land area and population with the significance level of 0.01 in Loess Plateau;the population change is one of the factors leading to the change of cultivated land area.