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Preliminary estimate of carbon sequestration potential of Faidherbia albida (Delile) A.Chev in an agroforestry parkland in the Central Rift Valley of Ethiopia

Dilla, AM, Smethurst, PJ, Barry, K ORCID: 0000-0003-2297-7931 and Parsons, D ORCID: 0000-0002-1393-8431 2019 , 'Preliminary estimate of carbon sequestration potential of Faidherbia albida (Delile) A.Chev in an agroforestry parkland in the Central Rift Valley of Ethiopia' , Forest, Trees and Livelihoods , pp. 1-11 , doi: 10.1080/14728028.2018.1564146.

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Abstract

Agroforestry parklands are a common land-use in Ethiopia and many parts of the tropics. These systems play an important role in climate change mitigation and adaptation, through carbon (C) sequestration. However, C sequestration in both tree biomass and soil has not been extensively studied for parklands of the Central Rift Valley (CRV), Ethiopia. Therefore, here we sampled a small number of F. albida trees and soil from the Adulala watershed, CRV, to provide a preliminary estimate of the C sequestration potential of these systems. Mean above-ground total dry biomass of trees was estimated at 844 kg tree-1. Tree density was 5.80 ha-1, which corresponded to 2.45 t C ha-1 in above-ground biomass and 0.76 t C ha-1 below-ground; and 118 t C ha-1 in soil (0–80 cm depth) under trees, compared to 84 t C ha-1 in the soil of crop-only areas. We speculate that if tree density was increased to 100 trees ha-1, the rate of soil C sequestration could be estimated as 0.48 t C ha-1 year-1 for 42 years. Faidherbia albida tree density is sparse in the study area, but could be increased by encouraging farmers to protect planted seedlings or natural regeneration.

Item Type: Article
Authors/Creators:Dilla, AM and Smethurst, PJ and Barry, K and Parsons, D
Keywords: biomass allocation, carbon, natural regeneration, pruning, sequestration, soil, tree
Journal or Publication Title: Forest, Trees and Livelihoods
Publisher: Taylor & Francis
ISSN: 1472-8028
DOI / ID Number: 10.1080/14728028.2018.1564146
Copyright Information:

Copyright 2019 Informa UK Limited, trading as Taylor & Francis Group, LLC

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