Establishment of comprehensive index model based on raster data and its application in the study of regional differentiation

Qiang Li

Tourism and Environment College of Shaanxi Normal University, Xi'an, Shaanxi 710119, China

Environment and Resource Management Department of Shaanxi Xueqian Normal University, Xi'an, Shaanxi 710100, China

The small grid calculation model was used as the theoretical basis; A variety of meteorological data in 1971-2007 of Chinese Loess Plateau, remote sensing image (TM), DEM and other maps in 2000 were used; factor analysis, raster calculator, variance analysis and other methods in ArcGIS were used; the mathematical model of the latitude and longitude related to the main meteorological elements of the loess plateau and comprehensive index model for regionalization were obtained; the north and south boundaries of the Loess Plateau were determined.