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Carbon stocks and dynamics in miombo, pinus and eucalyptus forests in Mozambique

assessment tools and tree species effects

Guedes, Benard (2017). Carbon stocks and dynamics in miombo, pinus and eucalyptus forests in Mozambique. Diss. (sammanfattning/summary) Uppsala, Sweden : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2017:104
ISBN 978-91-7760-098-5
eISBN 978-91-7760-099-2
[Doctoral thesis]

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Abstract

In Mozambique and neighbouring countries, deforestation and degradation of miombo forests are counteracted by new plantations of fast growing species and conservation of natural woodlands, activities supported by the REDD+ mechanism. The aim of this thesis was to examine the impacts of plantations of Pinus and Eucalyptus compared with mountain miombo forest on carbon stocks and dynamics in soil and tree biomass. The thesis also aimed to develop allometric biomass equations for lowland miombo forest to estimate aboveground tree biomass at the landscape scale. The entire study area was located within the Beira development corridor region, central Mozambique. Study plots of mountain miombo and 34-year-old first rotation plantations of Pinus taeda and Eucalyptus grandis were selected on three study sites in the Western highland of the Manica province to investigate total ecosystem carbon and nitrogen stocks in soil, litter and biomass. Tree biomass was estimated using allometric equations found in the literature. Total ecosystem carbon stocks in soils, litter layer and biomass, and net ecosystem production were all significantly higher in P. taeda and E. grandis plantations than in adjacent mountain miombo forest. Net primary production were higher in P. taeda and E. cloeziana plantations than in adjacent mountain miombo forest. Total soil nitrogen stocks in the topsoil layers were also significantly higher in plantation stands. The higher soil stocks of carbon and nitrogen could be explained to some extent with higher leaf litterfall, from Q-model predictions. However, higher root litter production in plantation stands was probably an additional important contribution to the measured higher soil organic carbon stocks. Two biomass functions were developed for estimating aboveground tree biomass of mixed-species lowland miombo forest. One equation was developed for estimating biomass based on stem diameter at breast height (1.3 m). The other equation was developed for estimating biomass based on stem diameter at stump height, to make it possible to also estimate losses of biomass in high exploitation areas of miombo woodlands.

Authors/Creators:Guedes, Benard
Title:Carbon stocks and dynamics in miombo, pinus and eucalyptus forests in Mozambique
Subtitle:assessment tools and tree species effects
Series/Journal:Acta Universitatis agriculturae Sueciae
Year of publishing :18 November 2017
Depositing date:18 November 2017
Volume:2017:104
Number of Pages:74
Papers/manuscripts:
NumberReferences
IGuedes, B.S., B.A. Olsson and E. Karltun. (2016). Effects of 34-year-old Pinus taeda and Eucalyptus grandis plantations on soil carbon and nutrient status in former miombo forest soils. Global Ecology and Conservation 8, 190-202.
IIGuedes, B.S., B.A. Olsson, E. Karltun, A.A. Sitoe and G. Egnell. Impacts of 34-year-old plantations of Pinus taeda and Eucalyptus grandis on total carbon stocks in former miombo woodlands (Submitted).
IIIGuedes, B.S., B.A. Olsson, A.A. Sitoe and G. Egnell. Net primary production and carbon fluxes in plantations of Pinus taeda and Eucalyptus cloeziana compared with miombo woodlands in Mozambique (Submitted).
IVOlsson, B.A., B.S. Guedes, S. Dahlin and R. Hyvönen. Predicted long-term effects of decomposition of leaf litter from Pinus taeda, Eucalyptus cloeziana and deciduous miombo trees on soil (Submitted).
VGuedes, B.S., A.A. Sitoe, and B.A. Olsson. Allometric models to support landscape management of lowland miombo woodlands in Mozambique (Submitted).
Place of Publication:Uppsala, Sweden
Publisher:Department of Ecology, Swedish University of Agricultural Sciences.
ISBN for printed version:978-91-7760-098-5
ISBN for electronic version:978-91-7760-099-2
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Agrovoc terms:biomass, Brachystegia, Eucalyptus, Pinus taeda, forest litter, forest soils, carbon stock assessment, environmental impact assessment, survey methods, Mozambique
Keywords:Biomass equation, Brachystegia spiciformis, Eucalyptus grandis, Eucalyptus cloeziana, Pinus taeda, Fine root production, Litterfall, Net primary production, Soil carbon
URN:NBN:urn:nbn:se:slu:epsilon-e-4491
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4491
ID Code:14737
Faculty:S - Faculty of Forest Sciences
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
External funders:Swedish International Development Cooperation Agency
Deposited By: Mr BS Guedes
Deposited On:20 Nov 2017 09:36
Metadata Last Modified:20 Nov 2017 09:36

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