Ethnicity, land use and woody vegetation: a case study from south-western Burkina Faso |
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Authors: | Anders Ræbild Hanne H Hansen Joachim Dartell J-M Kiléa Ky Lassina Sanou |
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Institution: | 1. Forest & Landscape Denmark, University of Copenhagen, H?rsholm Kongevej 11, 2970, Horsholm, Denmark 2. Department of Large Animal Sciences, University of Copenhagen, Gr?nneg?rdsvej 2, 1870, Frederiksberg, Denmark 3. Centre National de Semences Forestières, 01 BP2682, Ouagadougou 01, Burkina Faso
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Abstract: | Woody vegetation in cultivated landscapes in Burkina Faso is influenced by agricultural activities that are in turn influenced
by institutional arrangements. Research was undertaken in a village in south-west Burkina Faso to investigate the relationship
between species composition, diversity, density, species accumulation and land use category. Additionally the relationship
between number of trees, size of farmed land and farmer ethnicity was investigated. Indigenous Tiéfo farmers had on average
more than double the number of large (>4 m) trees of Vitellaria paradoxa Gaertn. f., Parkia biglobosa (Jacq.) R. Br. Ex G. Don and Anacardium occidentale L. than farmers belonging to other ethnic groups, but this was partly explained by a larger area being available. Differences
between ethnic groups were not significant when expressed per ha. Botanical inventories of fallows more than 4 years old,
cultivated parklands and plantations of Mangifera indica L. and A. occidentale showed that tree density and Simpson’s index of diversity for trees were highest in the fallow. Simpson’s index was not significantly
different for regeneration, but sample-based species accumulation curves indicated that species accumulation in parklands
was faster than in plantations when expressed per individual. The average regeneration density was 12,605, 1,995 and 6,772
seedlings ha-1 for fallow, parklands and plantations, respectively. This low density for parklands means that species accumulation is slow
compared to the other land uses when expressed per unit area. Fallow seems the most efficient way of keeping tree diversity
in the agricultural landscape. |
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Keywords: | Parkland Plantation Fallow Tenure Trees Regeneration Parkia biglobosa Vitellaria paradoxa |
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