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Quantifying Soil Morphology in Tropical Environments

Methods and Application in Soil Classification

Institute for Land and Water Management, Katholieke Universiteit Leuven, Vital Decosterstraat 102, 3000 Leuven, Belgium

View larger version (65K): [in a new window]   Fig. 1 Regional setting of the study area and location of pedons

View larger version (29K): [in a new window]   Fig. 2 Local soil classification scheme. Local farmers refer to the part of the Cross River Plains within the study area as Ebonyi or Isi Uzo. Ebonyi is the main river of the study area; Isi Uzo is the district named after the old main road crossing the study area. Dark soil is a synonym for black soil; clay is often referred to as sticky

View larger version (38K): [in a new window]   Fig. 3 Scatterplots and correlation coefficients between CI, RI, and soil chemical properties (** indicates significance at the 0.01 level)

View larger version (45K): [in a new window]   Fig. 4 Scatterplots for pedons on the first two principal components according to analysis on X. (I) nonhierarchical multivariate classification, (II) soil morphological classification according to Table 5, (III) great groups of U.S. soil taxonomy

View larger version (42K): [in a new window]   Fig. 5 Scatterplots for pedons projected in the plane of the first four principal components according to analysis on Y. (I) great groups of U.S. soil taxonomy, (II) soil morphological classification according to Table 5