从土壤多样性向地多样性发展符合土壤地理学的研究趋势，选择河南省作为研究区，将地貌这一主要的地学要素加入到土壤多样性的研究中，并用改进的仙农熵公式对多级地貌空间分布多样性及其与土壤多样性的相关性进行探讨。首先，对河南省1:175万地貌类型图进行矢量化得到地貌类型等级系统；然后，对地貌和土壤的构成组分多样性和2种不同分类体系的分支率进行计算并分析其特征；最后，在3 km×3 km网格尺度下分析地貌和土壤多样性间的相关性。研究表明：河南省共有3个一级地貌，12个二级地貌和37个三级地貌；随着土壤和地貌分类的等级细化，其分类个数和构成组分多样性值均呈上升趋势，即土壤和地貌所有分类单元在数量构成上的均匀程度越来越高；2种分类系统中，土壤分类较地貌分类有更详细的分类体系，且分支率有较大范围的变化；河南省一级地貌、二级地貌和三级地貌的空间分布多样性值和面积值均最大的类型分别是流水地貌、冲积平原和泛滥平坦地，是不同级别的优势地貌类型；一级地貌类型与土类、亚类和土属多样性间存在紧密的相关关系，且以流水地貌与土壤多样性间的相关性最强。

The development from pedodiversity to geodiversity conforms to the trend of soil geography research. Henan Province was selected for applying modified Shannon entropy equation to the geomorphic types as the main geological factor added to the soils in the study of diversity. Multi-class geomorphic spatial diversity and its correlation with soil diversity were discussed. Firstly, the 1:17 50000 landscape type map was vectorized to get the geomorphic type system of Henan Province. Then, geomorphic and soil composition diversity and bifurcation rations(BR) are calculated for soil and geomorphic classification systems. Lastly, the correlation between geomorphic diversity and pedodiversity at a resolution of 1 km ×1 km is discussed . Results showed that the richness of 1st , 2nd and 3rd level landform are numbered from 3, 12 to 37. As soil and geomorphic classification levels are getting finer and the classification number and form composition diversity values are accordingly on the rise trend. That is to say, soil and geomorphic tyeps are both growing higher either in richness number or diversity values. Soil classification is a more detailed classification system than geomorphic classification system with its larger range change of the bifurcation rations. The largest spatial distribution and area of 1st level landform are water flowing plain , 2nd level landform alluvial and 3rd level landform flood plain, dominating types respectively to the different levels. Between 1st level landform and soil group, soil subgroup and soil family there exists the closest tie while the correlation between landform water flowing plain and diversity of soil group is the strongest.

K903；S151

国家自然科学(41571208)资助。