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Träfflista för sökning "WFRF:(Skoglund Jerry) srt2:(1990-1994)"

Sökning: WFRF:(Skoglund Jerry) > (1990-1994)

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  • Backéus, Ingvar, et al. (författare)
  • Vegetation changes on formerly overgrazed hill slopes in semi-arid central Tanzania
  • 1994
  • Ingår i: Journal of Vegetation Science. - 1100-9233 .- 1654-1103. ; 5, s. 327-336
  • Tidskriftsartikel (refereegranskat)abstract
    • Composition of hill slope vegetation was studied in a semi-arid part of upland Tanzania where all grazing had been banned for 12 yr. The hills had been severely overgrazed previously and suffered from heavy gully and sheet erosion. Eight vegetation types are described. Floristic gradients revealed by numerical ordination techniques were found to be related mainly to degree of erosion, soil type and succession. The more or less bare soil that prevailed after grazing had ceased is now covered by grassland, woodland and immature secondary forest. The grasslands are still characterized by early successional species and they will probably remain open grassland as long as frequent burning continues. Brachystegia woodlands may have developed during earlier periods when the field layer was sparse due to grazing. The grazing had reduced the frequency of fire which in turn promoted the establishment of Brachystegia spp. Secondary forests are believed to have developed mainly where fires were not frequent, particularly at higher altitudes.
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  • Resultat 1-3 av 3
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tidskriftsartikel (2)
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refereegranskat (2)
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Skoglund, Jerry (3)
Hytteborn, Håkan, 19 ... (1)
Backéus, Ingvar (1)
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