Vegetation Dynamics in the Tafileh Woodlands of Southern Jordan | Science Publications

American Journal of Environmental Sciences

Saleh Al-Qura'n¹ 

关键词: Woodland;    Vegetation;    Phytogeography;    Importance Value;    Regeneration;   

DOI  :  10.3844/ajessp.2005.46.49

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

Woodland vegetation in the Tafileh highlands of southern Jordan was investigated andquantitatively surveyed to determine the patterns of vegetation dynamics associated with altitude andtopography. Three tree species (Juniperus phoenicea L. (evergreen needle-leaved woodland resistant tocold), Pistacia atlantica Desf. and Quercus aegilps L. (cold-deciduos broad-leaved woodland) andfive shrubs (Colutea istria Miller, Gomphocarpus sinaicus R. Br., Thymelaea hirsute (L.) Endl.,Crataegus aronia (L.) Bosc.ex DC and Daphne linearifolia Hart.) dominate the woody vegetation inthe investigated area. Lower altitudes of southwest facing slopes demonstrate generally the higherplant densities than the higher altitudes of northeast facing slopes. Species segregation occurs on thebasis of community ecological importance value depending on altitudes, slopes and human impactfactor through grazing activities, wood gathering especially on plateau sites. Regenerationconsequently negatively affected due to continuous reduction in species diversity and tree sizedistribution.

【 授权许可】

Unknown