A preliminary assessment of utilizable biomass in invading Acacia stands on the Cape coastal plains

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dc.contributor.authorTheron, J. M.en_ZA
dc.contributor.authorVan Laar, A.en_ZA
dc.contributor.authorKunneke, A.en_ZA
dc.contributor.authorBredenkamp, B. V.en_ZA
dc.date.accessioned2011-05-15T15:55:17Z
dc.date.available2011-05-15T15:55:17Z
dc.date.issued2004
dc.descriptionCITATION: Theron, J. M., et al. 2004. A preliminary assessment of utilizable biomass in invading Acacia stands on the Cape coastal plains. South African Journal of Science, 100(1-2): 123-125.
dc.descriptionThe original publication is available at https://journals.co.za
dc.description.abstractThe biomass (woody material and foliage) of invasive Australian wattles (Acacia cyclops, A. saligna and A. mearnsii) was estimated in stands where crown cover exceeded 50% on the west coast, Agulhas and Eastern Cape coastal plains. Tree-level models were constructed to estimate biomass of the different plant components of A. cyclops and A. saligna from stem diameter at knee height. An existing volume regression equation for A. mearnsii was adapted and the estimated volumes, based on diameter at breast height, and tree height, were converted to mass. Sample plots were used to estimate mass per unit area by tree component, species and region. Satellite remote sensing conservatively estimated the densely (>50% cover) infested areas at >100 000 ha. The total green (wet) woody biomass with a minimum diameter of 2.5 cm was estimated to be almost 10 Mt or 12 million m3. This is equivalent to the annual intake of roundwood by South African pulp, paper and board mills. A substantial quantity of raw material is therefore available for charcoal, wood composites and paper. Other products could possibly be developed from bark and foliage. Large-scale utilization of biomass will be a demanding task, with potential risks. Risks include environmental damage, and the creation of a dependency, and these will need to be managed carefully.
dc.description.urihttps://journals.co.za/content/sajsci/100/1-2/EJC96202?fromSearch=true
dc.description.versionPublisher's version
dc.format.extent3 pages
dc.identifier.citationTheron, J. M., et al. 2004. A preliminary assessment of utilizable biomass in invading Acacia stands on the Cape coastal plains. South African Journal of Science, 100(1-2): 123-125
dc.identifier.issn1996-7489 (online)
dc.identifier.issn0038-2353 (print)
dc.identifier.urihttp://hdl.handle.net/10019.1/9690
dc.language.isoen_ZAen_ZA
dc.publisherAcademy of Science for South Africa
dc.rights.holderAuthors retain copyright
dc.subjectInvasive plants
dc.subjectAcacia cyclops
dc.subjectAcacia mearnsii
dc.subjectEucalyptus saligna
dc.subjectCyclops
dc.subjectAcacia
dc.titleA preliminary assessment of utilizable biomass in invading Acacia stands on the Cape coastal plainsen_ZA
dc.typeArticle
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