安徽农业科学2012，Vol.40Issue(26)：13028-13031,4.
基于综合指数模型的黄土高原自然区划研究
Research on the Natural Regionalization in Loess Plateau Based on Model of Composite Index
摘要
Abstract
According to the multiple meteorological data, TM and DEM data from 1971 to 2007, the natural regionalization model of loess plateau was constructed based on factor analysis, the raster calculation in ArcGIS and the analysis of variance, the area of loess plateau was regionalized , and the regionalization results were verified with the analysis of variance. As indicated by the results, the factors of annual maximum wind speed and average wind speed were excluded for analysis. The aggregative index of loess plateau showed a layered distribution from southeast to northwest. Meteorological elements were increasing or decreasing according to the order of level areas, towards this direction terrain increases, vegetation cover reduces, organic matter content of soil decreases, color of soil fades, texture becomes light crude and erosion intensity is enhanced. Based on the single factor analysis of variance, we analyzed the difference of the mean data of meteorological elements in three natural areas. The difference of average annual minimum temperature was the most. Multiple variance analysis reflected the remarkable diversity of meteorological elements between each two natural areas. Therefore, it was scientific to divide loess plateau by using aggregative index.关键词
自然区划/因子分析/方差分析/综合指数模型/黄土高原Key words
Natural regionalization/Factor analysis/Analysis of variance/Aggregative index model/Loess plateau分类
农业科技引用本文复制引用
李强..基于综合指数模型的黄土高原自然区划研究[J].安徽农业科学,2012,40(26):13028-13031,4.基金项目
陕西教育学院自然科学基金(10KJ020) （10KJ020）
国家自然科学基金项目(41071057). （41071057）
