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Research Article

Species composition, stand structure, and regeneration status of tree species in dry Afromontane forests of Awi Zone, northwestern Ethiopia

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Pages 199-215 | Received 06 Jan 2019, Accepted 01 Sep 2019, Published online: 23 Sep 2019

Figures & data

Figure 1. Map showing the study area

Figure 1. Map showing the study area

Figure 2. Mean annual rainfall and temperature registered at Kidamaja (1987–2014) (A) and Chagni (1986–2016) (B) weather stations

Figure 2. Mean annual rainfall and temperature registered at Kidamaja (1987–2014) (A) and Chagni (1986–2016) (B) weather stations

Table 1. Locations and topographic characteristic of studied forests

Table 3. Stand structure and importance value of species (in descending order of density) in Tsahare Kan forest (N = 16). For all forests in Tables (3–), N = number of quadrats, D = density (stem ha−1), DO = dominance (m 2 ha−1), Fr = frequency, RD = Relative density, RDO = Relative dominance, RF = relative frequency, IVI = importance value index

Table 4. Stand structure and importance value of species (in descending order of density) in Apini forest N = 16)

Table 5. Stand structure and importance value of species (in descending order of density) in Dabkuli forest (N = 16)

Table 6. Stand structure and importance value of species (in descending order of density) in Bari forest (N = 16)

Table 7. Stand structure and importance value of species (in descending order of density) in Kahatsa forest (N = 16)

Table 2. Stand attributes of trees and analysis of variance in five forests

Table 8. Similarity of species composition among forests

Figure 3. Population structure of five forests

Figure 3. Population structure of five forests

Table 10. Natural regeneration status of species (in descending order of density) in Apini forest

Table 11. Natural regeneration status of species (in descending order of density) in Dabkuli forest

Table 12. Natural regeneration status of species (in descending order of density) in Bari forest

Table 9. Natural regeneration status of species in five forests. In all forests in Tables (9–13): D = adult density, SD = seedling density, and SP = sapling density (Stem ha−1), regeneration status (RS) (G = Good, F = Fair, and P = Poor) and ‘0ʹ refers to absence of individuals in one or two of the stages. Natural regeneration status of species (in descending order of density) in Tsahare Kan forest

Table 13. Natural regeneration status of species (in descending order of density) in Kahtasa forest

Table 14. Pearson correlation matrix in the density of seedlings, saplings, and adult species (density, stem ha−1, bold fonts referred to significant at P < 0.05)

Figure 4. Regression of log-transformed seedling density (SeD) and sapling density (SaD) along elevation and slope gradients

Figure 4. Regression of log-transformed seedling density (SeD) and sapling density (SaD) along elevation and slope gradients