Researches on Land Resources Data Mining Technology based on Multi-grids

The traditional land-use statistics based on administrative districts can not represent the spatial differences of land-use composition entirely. By introducing spatial hierarchy and non-spatial hierarchy the Statistical Information Grid-Based method is extended then it can manage and analyze land-use statistics in virtue of a kind of multi-grid data structure. Using a part of TM images of Wuhan district some experiments are carried out: the creation of quaternary breakdown multi-grids according to the complexity of land-use structure and the landscape diversity which can be figured out by TM image; the simulation of administrative borderline using grid cells; the computation and representation of the spatial difference in cultivated land per capita of the district, these experiments indicate land-use statistics based on multi-grids can show the spatial differences of land-use composition better and make for the land resources data-mining to achieve knowledge needed.