Can rangelands gain from bush encroachment? Carbon stocks of communal grazing lands invaded by Prosopis juliflora

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dc.contributor.author Birhane, Emiru
dc.contributor.author Treydte, Anna C.
dc.contributor.author Eshete, Abeje
dc.contributor.author Solomon, Negasi
dc.contributor.author Hailemariam, Mengsteab
dc.date.accessioned 2020-04-20T12:26:18Z
dc.date.available 2020-04-20T12:26:18Z
dc.date.issued 2017-06
dc.identifier.uri https://doi.org/10.1016/j.jaridenv.2017.01.003
dc.identifier.uri https://dspace.nm-aist.ac.tz/handle/20.500.12479/731
dc.description This research article published by Elsevier Ltd., 2017 en_US
dc.description.abstract Rangeland ecosystems are rapidly declining due to overgrazing and bush encroachment. Little is known about how important bush encroachment is for climate change mitigation. We estimated woody plant biomass at different Prosopis juliflora cover to quantify above- and below-ground carbon (C) stocks in Afar, northern Ethiopia. We developed allometric models to estimate aboveground biomass (agB) through destructive harvesting based on crown diameter (CrD), diameter at stump height (DSH), and tree height (H) for twenty P. juliflora and 18 Acacia senegal trees. DSH showed the best model fit in predicting above ground biomass compared to H, CrD, and the combination of those predictor parameters, respectively. Models were highly significant for all agB components. Total C stocks of the entire woody species community were about 40% higher (86 Mg C ha−1) at high than at low (50 Mg C ha−1) P. juliflora encroachment categories. We conclude that allometric models using simple dendrometric parameters are highly valuable for assessing P. juliflora biomass. While in lightly invaded areas, eradication and prevention of further spread might be possible, we propose that the high C stocks of rangelands densely invaded by P. juliflora, where eradication attempts have failed, should be considered for potential C trade measures. en_US
dc.language.iso en en_US
dc.publisher Elsevier Ltd. en_US
dc.subject Allometric models en_US
dc.subject Climate change mitigation en_US
dc.subject Semi-arid grazing system en_US
dc.subject Woody encroachment en_US
dc.title Can rangelands gain from bush encroachment? Carbon stocks of communal grazing lands invaded by Prosopis juliflora en_US
dc.type Article en_US

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