The remaining families of the study area are comprised of 1 genera each (Table Analysis of the habit of woody species recorded form Doshke forest revealed that the largest number of species 29 out of 44 (66%) were trees, while 12 (27%) were found to be shrubs and 3 (7%) lianas (Figure Four plant community types were recognized from hierarchical cluster analysis using PC-ORD version 5.0 computer program (Figure The four plant community types and their characteristics are listed and described in Figure Shannon-Wiener diversity index and evenness were computed for the four communities from the vegetation data of Doshke forest (Table While community type 1 had the highest species richness followed by community type 2, community type 4 showed intermediate richness whereas community type 3 exhibited the least species richness (Table The Sorensen’s similarity coefficient was computed to detect dissimilarities among plant community types (Table For the description of the structure of Doshke forest, 44 woody plant species comprising 2164 individuals whose DBH are greater than 2.5 cm and height is greater than 2 m high were selected. Similar results were reported by [The total basal area calculated for Doshke forest was about 103.7 mA comparative contribution of the different DBH classes to the total basal area is presented in Table The vertical structure of the woody species occurring in Doshke natural forest was described following the International Union Forestry Research Organization (IUFRO) classification scheme as used by [The result of the study indicated that the highest density 1101 (85.5%) was attained by the lower storey individuals but only 130 (10.1%) and 57 (4.4%) density were exhibited by the middle and upper layer respectively.
of trees.
0000002702 00000 n You could not be signed in, please check and try again.You could not be signed in, please check and try again. (Bacillus Sp., Clostridium sp., pseudomonas.They 0000001590 00000 n Copyright © 2018-2021 BrainKart.com; All Rights Reserved.
Human society and forests influence each other in both positive and negative ways. An individual user may print out a PDF of a single chapter of a monograph in OSO for personal use. For example,The woody plant species in the study area could be conveniently classified into eleven DBH classes: 2.5-12 cm, 12.01-24 cm, 24.01-36 cm, 36.01-48 cm, 48.01-60 cm, 60.01-72 cm, 72.01-84 cm, 84.01-96 cm, 96.01-108 cm, 108.01-120cm, and > 120 cm (Figure As the DBH classes size increases, the number of individuals gradually decrease beginning from 992 stems haThe majority of the species had the highest number of individuals in the lower DBH and low in the high DBH classes. This also implied that the forest is in a good state of recruitment.The study has shown that the total basal area calculated for Doshke forest was about 103.7 mIn generally, the assessment of regeneration status based on seedling and sapling count revealed that a significant proportion of woody species were without seedling and sapling stage in the forest; some tree species are without sapling stage while others are represented by all stages. include wide variety of saprotrophic micro- organism like;Bacteria �a��� > ``2�xttt4���.@VУa@&%cF!�! A forest is a large area of land dominated by trees. 0000003265 00000 n various biotic components, representatives from the three functional groups, of Box 247, Bale Robe, EthiopiaGeneral Ethiopian Biodiversity Institute Addis Ababa, P.O. Geometric population growth results increased rural demand for agricultural lands.