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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Estimating aboveground tree biomass in three different miombo woodlands and associated land use systems in Malawi
Biomass and Bioenergy, Volume 66, Year 2014
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Description
Trees outside forests support smallholder farmers' livelihoods and play a critical role in the global carbon cycle. However, their contribution to climate change mitigation through carbon storage is not obvious because of limited information regarding their extent, and inadequate methods for biomass quantification. This study evaluated the distribution of aboveground biomass (AGB) in three 100km2 benchmark sites in Kasungu, Salima, and Neno districts in Malawi. In 67 sample plots covering 37 cultivated fields and 30 woodland plots, a total of 2481 trees were inventoried over 6ha. Tree species documented were 56 in Kasungu, 35 in Salima and 33 in Neno. The corresponding values of the Shannon diversity index and its standard error (SE) were 3.45 (0.01) for Kasungu, 2.78 (0.01) for Salima and 2.73 (0.01) for Neno. The three most dominant species in terms of biomass were Faidherbia albida (47.8%), Piliostigma thonningii (11%), and Mangifera indica (9%), all found in cultivated fields. Large trees with diameter at breast height (DBH)>40cm formed only 3% of the total population inventoried in Salima, but held over 80% of the biomass. These high biomass trees were hardly found in Kasungu and Neno. Smaller trees (DBH<10cm) dominated all the sites, representing 93% of all the trees measured. These stock 14, 1, and 67% of the biomass in Kasungu, Salima, and Neno, respectively. The biomass estimates established in this study provide a useful reference against which future estimates can be compared, and sets a baseline for calculating changes in carbon stocks over time. © 2014 Elsevier Ltd.
Authors & Co-Authors
Kuyah, Shem
Kenya, Nairobi
World Agroforestry Centre
Kenya, Nairobi
Jomo Kenyatta University of Agriculture and Technology
Sileshi, Gudeta Weldesemayat Weldsesemayat
Kenya, Nairobi
World Agroforestry Centre
Njoloma, Joyce
Kenya, Nairobi
World Agroforestry Centre
Mng’omba, Simon A.
Kenya, Nairobi
World Agroforestry Centre
Neufeldt, Henry
Kenya, Nairobi
World Agroforestry Centre
Statistics
Citations: 42
Authors: 5
Affiliations: 2
Identifiers
Doi:
10.1016/j.biombioe.2014.02.005
ISSN:
09619534
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Locations
Malawi