@article{01H0FPZ94KP7J8JBTYZC8ZZ039,
  abstract     = {{Understanding the factors controlling soil total N (TN) is helpful in simulating N cycling at local and regional scales. This study was conducted with the aim to; (i) understand the distribution of TN in specific soil horizons (A and B horizons) of three reference soil groups: Acrisols, Cambisols and Ferralsols, common in humid tropical environments, and (ii) to identify factors controlling TN variations among the various soil groups. Twenty-eight Acrisols, 21 Cambisols and 8 Ferralsols profiles spanning a wide range of precipitation gradients, vegetation type/land use and parent materials, from the Northwestern Highlands (NWH) of Cameroon were considered. Soil properties were analyzed following standard procedures. TN had very high coefficients of variation (>35%) in all the reference soil groups (RSGs), with highest mean TN (0.31 +/- 0.03%) observed in the A horizons of Acrisols and the lowest (0.05 +/- 0.01%) in B horizons of Ferralsols. Variations in TN content were significantly (p < 0.05) influenced by parent material, land use type, precipitation and slope gradient. In surface (A) horizons of all the RSGs, TN correlated positively and significantly with clay (p < 0.05), silt (p < 0.01) and soil organic carbon (SOC) (p < 0.01), and negatively with sand (p < 0.01). This observation was slightly different in subsurface (B) horizons. This study provides data which contributes to a better understanding of soil fertility in tropical highlands.}},
  author       = {{Kome, G. K. and Kips, Ph. A. and Yerima, B. P. K. and Enang, R. K. and Van Ranst, Eric}},
  issn         = {{1064-2293}},
  journal      = {{EURASIAN SOIL SCIENCE}},
  keywords     = {{Soil Chemistry,Soil Fertility,Tropical Soils,Western Africa,soil fertility,Acrisols,Cambisols,Ferralsols,tropical soils,ORGANIC-CARBON,FOREST ECOSYSTEM,CROP-ROTATION,LAND-USE,AVAILABILITY,MINERALIZATION,FERTILIZATION,PRECIPITATION,RETENTION,AMMONIUM}},
  language     = {{eng}},
  number       = {{7}},
  pages        = {{889--901}},
  title        = {{Distribution of total nitrogen in soils of the tropical highlands of Cameroon}},
  url          = {{http://doi.org/10.1134/s1064229322602682}},
  volume       = {{56}},
  year         = {{2023}},
}

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