dc.description.abstract |
Muslim grave forests can be used for conservation and potential reservoir of biodiversity.
This study was conducted in Merawi town Administration Muslim grave forest at north
Gojjam zone, Amhara National Regional State, Ethiopia. The objective of this study was to
investigate the woody plant species composition, diversity and conservational status
including the types of disturbances in Merawi Muslim grave forest. The data were collected
by using species counting, collection, the height and DBH measurement and the types with
their intensity of disturbances per plots. Four transect lines oriented to north–south
directions with the interval of 200m were used for vegetation data collection. A total of 24
quadrats with 20m x 20m (400m2) laid dawn at every 100m interval between each quadrats
were established. These quadrats were used to record the diversity and population structure
of woody individuals. The woody plants with a diameter at breast height (DBH) ≥2.5cm and
height > 2m were measured as mature, DBH ≤ 2.5cm height <1 were counted as seedlings
and between 1m and 2m were saplings. To collect seedlings and saplings data 3 subplots of
5m x 5m (25m2) two at the corners and one at the center of the main quadrats were used to
record their regeneration status. The species diversity data were analyzed by using Shannon
Wiener Diversity Index. A total of 53 woody plant species belonging to 37 families and 48
genera were identified in Merawi Muslim grave forest. Out of the total number of species
46(86.79%) are native woody plant species. The family Fabaceae with 8 species had the
highest number of species, followed by Rosaceae and Euphorbiaceae with 3 species for each.
The overall Shannon-Wiener Diversity Index (H’) and evenness values for the entire forest
was 2.90 and 0.73 respectively. Density of seedlings, saplings and matured woody species
was 2412.3ha-1, 2318.6 ha-1 and 2241.7ha-1 respectively. The total basal area of woody plant
species in the forest was 24.84m2ha-1, this value is low but still in the range of the above
tropical forest basal area scale. The highest IVI was contributed by Carissa spinarum
26.11(8.70%), Juniperus procera 21.11(7.03%) and Calpurnia aurea 17.27(5.75%). The
diameter at the breast height (DBH) and height class distribution showed an inverted “J”
shaped pattern, which implies that the lower classes were dominated by small sized woody
specie. More ecological studies with respect to species composition, plant community
structure and regeneration status of the forest in relation to soil sampling, seed physiology
and more quantitative data clearly identify for feeling the gaps of this work.
Key phrases: Basal area, density, Diversity, Importance Value Index, Muslim grave forest |
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