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Library How resilient are African woodlands to disturbance from shifting cultivation?

How resilient are African woodlands to disturbance from shifting cultivation?

How resilient are African woodlands to disturbance from shifting cultivation?

Resource information

Date of publication
December 2015
Resource Language
ISBN / Resource ID
AGRIS:US201600185632
Pages
2320-2336

Large parts of sub‐Saharan Africa are experiencing rapid changes in land use and land cover, driven largely by the expansion of small‐scale shifting cultivation. This practice creates complex mosaic landscapes with active agricultural fields and patches of mature woodland, interspersed with remnant patches in various stages of regrowth. Our objective here was to examine the rate and extent to which carbon stocks in trees and soils recover after cultivation, and detail how this disturbance and regrowth affect patterns in tree species composition and diversity over 40 years of succession in a miombo woodland landscape in southeast Tanzania. We sampled 67 areas, including plots previously cleared for cultivation, active fields, and mature woodlands for reference purposes. Sites were further stratified by soil texture to test for associated effects. Tree carbon stocks accumulated at an average rate of 0.83 ± 0.10 Mg C·ha⁻¹·yr⁻¹, with soil texture having no clear impact on accumulation rates. Bulk soil carbon stocks on both soil types appeared unaffected by both the initial land clearance and the subsequent regrowth, which resulted in no significant changes over time. Tree species diversity in regrowing plots developed rapidly and within

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Authors and Publishers

Author(s), editor(s), contributor(s)

McNicol, Iain M.
Casey M. Ryan
Mathew Williams

Data Provider
Geographical focus