{"title":"埃塞俄比亚西南部吉马地区贝勒特森林的植被组成和结构","authors":"Kitessa Hundera, T. Gadissa","doi":"10.4314/EJBS.V7I1","DOIUrl":null,"url":null,"abstract":"Woody species composition and structure of the Belete forest was studied from December 2005 to September 2006. Thirty two sampling plots, each having a size of 20 m X 20 m, were laid at every 50m altitudinal gradient. 74 woody species belonging to 68 genera and 38 families were recorded in the forest. Thirty two (40.5%) of the species were trees, 39 (49.4%) shrubs and the remaining 8 (10.1%) species were climbers. Podocarpus falcatus was the only Gymnosperm identified from the forest and all the rest were Angiosperms. Diameter and height was measured for all trees and shrubs with DBH greater than 2 cm. Tree density was 1482 individuals per hectare and the basal area was 90.6m 2 /ha. Most of the individuals were distributed in the lower DBH and height classes. Four general patterns of population structure were recognized. Keywords/phrases: Basal Area, Belete Forest, Diameter at Breast Height, Species Composition Ethiop. J. Biol. Sci ., 7(1): 1-15, 2008","PeriodicalId":187522,"journal":{"name":"Ethiopian Journal of Biological Sciences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"21","resultStr":"{\"title\":\"Vegetation composition and structure of the Belete Forest, Jimma Zone, South Western Ethiopia\",\"authors\":\"Kitessa Hundera, T. Gadissa\",\"doi\":\"10.4314/EJBS.V7I1\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Woody species composition and structure of the Belete forest was studied from December 2005 to September 2006. Thirty two sampling plots, each having a size of 20 m X 20 m, were laid at every 50m altitudinal gradient. 74 woody species belonging to 68 genera and 38 families were recorded in the forest. Thirty two (40.5%) of the species were trees, 39 (49.4%) shrubs and the remaining 8 (10.1%) species were climbers. Podocarpus falcatus was the only Gymnosperm identified from the forest and all the rest were Angiosperms. Diameter and height was measured for all trees and shrubs with DBH greater than 2 cm. Tree density was 1482 individuals per hectare and the basal area was 90.6m 2 /ha. Most of the individuals were distributed in the lower DBH and height classes. Four general patterns of population structure were recognized. Keywords/phrases: Basal Area, Belete Forest, Diameter at Breast Height, Species Composition Ethiop. J. Biol. Sci ., 7(1): 1-15, 2008\",\"PeriodicalId\":187522,\"journal\":{\"name\":\"Ethiopian Journal of Biological Sciences\",\"volume\":\"27 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"21\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Ethiopian Journal of Biological Sciences\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.4314/EJBS.V7I1\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ethiopian Journal of Biological Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/EJBS.V7I1","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 21
摘要
2005年12月至2006年9月对Belete森林的木本树种组成和结构进行了研究。32个样地，每个样地的大小为20 m X 20 m，每隔50m的海拔梯度敷设。共有木本植物74种，隶属于38科68属。乔木32种(40.5%)，灌木39种(49.4%)，攀缘植物8种(10.1%)。在森林中发现的裸子植物仅为狐尾足，其余均为被子植物。测量了所有胸径大于2 cm的乔灌木的直径和高度。乔木密度为1482株/公顷，基材面积为90.6 m2 /ha。大多数个体分布在低胸径级和低高度级。确认了人口结构的四种一般模式。关键词:基底面积;贝勒特林;胸径;生物。科学通报，7(1):1-15,2008
Vegetation composition and structure of the Belete Forest, Jimma Zone, South Western Ethiopia
Woody species composition and structure of the Belete forest was studied from December 2005 to September 2006. Thirty two sampling plots, each having a size of 20 m X 20 m, were laid at every 50m altitudinal gradient. 74 woody species belonging to 68 genera and 38 families were recorded in the forest. Thirty two (40.5%) of the species were trees, 39 (49.4%) shrubs and the remaining 8 (10.1%) species were climbers. Podocarpus falcatus was the only Gymnosperm identified from the forest and all the rest were Angiosperms. Diameter and height was measured for all trees and shrubs with DBH greater than 2 cm. Tree density was 1482 individuals per hectare and the basal area was 90.6m 2 /ha. Most of the individuals were distributed in the lower DBH and height classes. Four general patterns of population structure were recognized. Keywords/phrases: Basal Area, Belete Forest, Diameter at Breast Height, Species Composition Ethiop. J. Biol. Sci ., 7(1): 1-15, 2008
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