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International Journal of Agricultural Research
  Year: 2007 | Volume: 2 | Issue: 4 | Page No.: 377-384
DOI: 10.3923/ijar.2007.377.384
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Soil Carbon Distribution in a Hilly Landscape

E.U. Onweremadu

This study investigated the distribution of soil carbon in two slope aspects of a hilly landscape in Southeastern Nigeria. A transect was used to align soil profile pits dug on three physiographic positions of crest, midslope and footslope on both slope aspects. Soil and core samples were collected from pedogenic horizons based on soil profile differentiation. Standard analytical and statistical tools were used to analyze soil samples and data, respectively. Results showed that less values of soil carbon were recorded in soils of the windward side despite its forested nature. Organic carbon (OC) decreased with depth in both slope aspects while inorganic carbon (IOC) had higher values in deeper layers. Bulk density decreased as organic carbon increased in soils of the study site. Soils on the windward landscape had higher erodibility values based on calculated Dispersion Ratio (DR) values. Better relationship existed between soil carbon and DR on leeward aspect of the hilly landscape when compared with values of the same parameters in soils of the windward side of the study area.
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How to cite this article:

E.U. Onweremadu , 2007. Soil Carbon Distribution in a Hilly Landscape. International Journal of Agricultural Research, 2: 377-384.

DOI: 10.3923/ijar.2007.377.384






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