Agroforestry Systems

, Volume 76, Issue 1, pp 37–51 | Cite as

Carbon pools in tree biomass and the soil in improved fallows in eastern Zambia

Article

Abstract

This study quantified tree and soil C stocks and their response to different tree species and clay contents in improved fallows in eastern Zambia. From 2002 to 2003, soil, and destructively harvested two-year old tree, samples were analysed for C. There were significant differences (P < 0.05) in aboveground tree C stocks, and in net organic C (NOC) intake rates across coppicing tree species at Msekera and Kalunga. Aboveground C stocks ranged from 2.9 to 9.8 t ha-1, equivalent to NOC intakes of 0.8–4.9 t ha-1 year-1. SOC stocks in non-coppiced fallows at Kalichero and Msekera significantly differed (P < 0.05) across treatments. SOC stocks to 200 cm depth ranged from 64.7 t C ha-1 under non-coppicing fallows at Kalunga to 184.0 t ha-1 in 10-year-old coppicing fallows at Msekera. Therefore, tree and soil C stocks in improved fallows can be increased by planting selected tree species on soils with high clay content.

Keywords

Carbon pools Improved fallows Net organic carbon intake (NOC) Soil organic carbon (SOC) Trees 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.CambridgeUK
  2. 2.Department of GeographyUniversity of CambridgeCambridgeUK

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