SOTER数据库支持下以地形为基础的土壤多样性分析——以山东省为例

在山东省1∶100万SOTER数据库的支持下,运用土壤多样性理论及其测度方法对山东省不同地形单元上发育的土壤类型的多样性及其分布模式进行了初步的分析和定量化的研究。结果表明:土壤多样性指数从大到小依次为平原、中坡度、中坡度丘陵、山麓平原、中坡度峭壁带、低洼地和高坡度山地;土壤丰富度指数从高到低依次为平原、中坡度丘陵、中坡度、低洼地和山麓平原、中坡度峭壁带和高坡度山地;土壤均匀度指数从大到小依次为:中坡度、平原、山麓平原、中坡度丘陵、中坡度峭壁带、低洼地和高坡度山地。不同类型地形单元上发育的土壤的面积均不同程度地符合对数正态分布。

Analysis of Pedodiversity Based Upon a Provincial SOTER Database--A Case Study from Shandong Province

This paper uses the theory of pedodiversity and its measurement to analyze the diversity of soils developed from different major landforms by using 1:1 M SOTER database.The results showed diversity index of the soils followed the sequence:level land-plain,sloping land-medium-gradient mountain,sloping land-medium-gradient hill,level land-valley floor, sloping land-medium-gradient escarpment zone, level land-depression and steep land-high-gradient mountain; the evenness index followed the sequence: sloping land-medium-gradient mountain, level land-plain, level land-valley floor, sloping land-medium-gradient hill, level land-depression and sloping land-medium-gradient escarpment zone, steep land-high-gradient mountain; the richness index followed the sequence:level land-plain, sloping land-medium-gradient hill, sloping land-medium-gradient mountain, level land-depression(level land-valley floor, sloping land-medium-gradient escarpment zone), steep land-high-gradient mountain.The area distribution of the soils developed on different types of terrain components at various degrees seemed to fit the logarithmic normal distribution model.