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Woody plant assemblage and the structure of miombo woodland along a disturbance gradient in Hurungwe, Zambezi Valley, Zimbabwe

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Journal of Forestry Research 2021年第5期32卷 1867-1877页

作者： Tatenda Gotore Hilton GTNdagurwa Shakkie Kativu Denis Gautier Laurent Gazull Forest Research Centre P.O.Box HG595HighlandsHarareZimbabwe Department of Forest Resources and Wildlife Management Faculty of Applied ScienceNational University of Science and TechnologyP.O.Box AC 939 AscotBulawayoZimbabwe School of Animal Plant and Environmental SciencesUniversity of the WitwatersrandPrivate Bag 3Wits 2050South Africa Department of Biological Sciences Faculty of ScienceUniversity of ZimbabweP.O.Box MP167 Mount PleasantHarareZimbabwe Forêt et Sociétés Univ MontpellierCIRADTA C-105/DCampus international de Baillarguet34398 Montpellier Cedex 5France

miombo woodlands near human settlements are under significant pressures from human activities,with negative consequences on their structure and *** studies are limited,we assessed the structure and species composition of a portion of miombo woodland along an increasing disturbance gradient from a national park,through a buffer zone to communal lands in northeast *** concentric plots of 2 and 11 m radii were established in each area to record woody species composition,diameter,height,basal area,density and volume as well as evidence of *** of site,growth stage and their interaction on vegetation diversity and structural parameters were tested using a general linear model(GLM).Principal component analysis(PCA) tested the association between species and site and ANOVA the differences in the level of disturbance across *** diversity did not differ between sites except for evenness,which increased with *** and richness were greater in seedlings and saplings than mature trees across sites,*** and mature tree diameters differed significantly between *** and density of mature trees declined with increasing disturbance while seedling densities peaked at intermediate disturbance levels(buffer zone).Tree harvesting,was more evident in the buffer zone and in the communal area relative to the national *** contrast,fire frequency was greater in the national park and in the buffer zone relative to the communal *** results of this study identify a true miombo woodland dominated by Brachystegia boehmii with a stable population,as illustrated by an inverse-J shape in diameter class distribution on all sites,and that these woodlands are generally resilient to disturbances,maintaining similar species composition and structure at various levels of ***,continued monitoring of disturbance levels and miombo woodland response is recommended to ensure sustainable utilisation of

关键词： miombo woodlands cComposition Diversity Structure Anthropogenic disturbances

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Characterization of Some Typical Soils of the miombo Woodland Ecosystem of Kitonga Forest Reserve, Iringa, Tanzania： Physico-Chemical Properties and Classification

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Journal of Agricultural Science and Technology(A) 2014年第3期4卷 224-234页

作者： Hassan Bashiru Shelukindo Balthazar Msanya Ernest Semu Sibaway Mwango Bal Ram Singh Pantaleo Munishi Department of Soil Science Faculty of Agriculture Sokoine University of Agriculture Morogoro 3008 Tanzania Department of Plant Science and Environment Studies Norwegian University of Life Sciences As1432 Norway 3. Department of Forest Biology Faculty of Forestry and Nature Conservation Sokoine University of Agriculture Morogoro 3010Tanzania

Despite the fact that miombo woodland soils have significant implications in global climate change processes, few studies have been done to characterize and classify the soils of the miombo woodland ecosystem of Tanzania. The current study was carried out to map and classify soils of Kitonga Forest Reserve, which is a typical miombo woodland ecosystem, in order to generate relevant information for their use and management. A representative study area of 52 km2 was selected and mapped at a scale of 1：50,000 on the basis of relief. Ten representative soil profiles were excavated and described using standard methods. Soil samples were taken from genetic soil horizons and analyzed in the laboratory for physico-chemical characteristics using standard methods. Using field and laboratory analytical data, the soils were classified according to the FAO-World Reference Base （FAO-WRB） for Soil Resources system as Cambisols, Leptosols and Fluvisols. In the USDA-NRCS Soil Taxonomy system the soils were classified as Inceptisols and Entisols. Topographical features played an important role in soil formation. The different soil types differed in physico-chemical properties, hence exhibit differences in their potentials, constraints and need specific management strategies. Texture varied from sandy to different loams; pH from 5.1 to 5.9; organic carbon from 0.9 g/kg to 20 g/kg; and CEC from 3 cmol/（＋）kg to 24 cmol/（＋）kg. Sustainable management of miombo woodlands ecosystem soils requires reduced deforestation and reduced land degradation.

关键词： miombo woodlands soil properties soil classification Kitonga Forest Reserve Tanzania.

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Tree Species Diversity and Edaphic Factors Associated with Different Land Uses in Tropical Forest Ecosystems, Tanzania

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Open Journal of Ecology 2023年第10期13卷 759-772页

作者： George B. Bulenga Salim M. S. Maliondo Josiah Z. Katani Gert Nyberg Department of Ecosystems and Conservation Sokoine University of Agriculture (SUA) Chuo Kikuu Tanzania Department of Research and Publication Tanzania Research and Conservation Organization (TRCO) Morogoro Tanzania Department of Forest Resources Assessment and Management Sokoine University of Agriculture (SUA) Chuo Kikuu Tanzania Department of Forest Ecology and Management Swedish University of Agricultural Sciences (SLU) Umeå Sweden

It has been reported that changes to miombo woodland ecosystems through conversion to other land uses alter tree species diversity and soil properties. The aim was to assess whether the Important Value Index (IVI), Shannon- Wiener diversity index (H'), and soil chemical properties differ between land uses in the Kibutuka miombo woodland ecosystem. IVI and H' were used to indicate tree species dominance and diversity. Statistical analyses were performed in R software. IVI of Brachystegia was significantly (p Combretum, Milletia, and Diplorhynchus had significantly (p p p p miombo woodland ecosystem is recent and the degradation seen in vegetation is still not reflected in the soil properties.

关键词： Degradation Dominance miombo woodlands Soil Chemical Properties

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