1. Soil organic carbon content decreased over the period (1962 to 2002) depending on the agroclimatic zone and land use. In the Lake Victoria Basin, the relative decline was of 50%, 27%, 21%, and 12% for annual crops, banana, coffee, and range lands, respectively.
2. Under average climatic conditions, perennial crops have higher potential for soil organic carbon sequestration than annual crops in Uganda's subhumid agroclimatic zone of the Lake Victoria crescent.
3. There is great potential for using the modeling approach to evaluate the influence of various factors on soil organic carbon sequestration.
Therefore, it is recommended that the model be tested across other agroclimatic zones, and that long-term experimental data be assembled to develop a defensive system for soil C accounting.
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