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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
David Akodi, Everline Komutunga, Choice Agaba, Kevin John Oratungye and Elizabeth Ahumuza
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DOI:10.17265/2161-6256/2016.03.002
Affiliation(s)
Soils, Agro-Meteorology and Environment Program, National Agricultural Research Laboratories (NARL), Kampala 7065, Uganda
ABSTRACT
The effect of land use on
soil organic carbon (SOC) stocks and depth distribution of SOC was investigated
in the Lake Victoria Crescent agro-ecological zone of Uganda. Soil samples were
collected from six land use types at 0-30, 30-60 and 60-90 cm from profile pits dug in
similar soils and slopes. Results indicated
that SOC stocks significantly differed across the various
land use systems. SOC also varied significantly by depth. The highest SOC and pH
were recorded under natural forest-strict nature. Grassland had the lowest SOC
but the highest bulk density (BD). Phosphorous (P)
was the highest in banana-coffee systems and the lowest under tea
plantations. The lowest values of pH
and BD were found in highly disturbed natural forest. The upper layers of the
soil (0-30 cm) stored higher
amounts of SOC compared to other depths (30-60 cm
and 60-90 cm). Land use therefore has a significant effect on
SOC and other soil physical and chemical properties.
KEYWORDS
Soil organic carbon, land use change, land use systems, Mabira forest.
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