نوع مقاله : مقاله پژوهشی
نویسنده
مربی پژوهشی، موسسه تحقیقات جنگلها و مراتع کشور. صندوق پستی، 116-13185، تهران، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Recent occurrence of tree decline affecting natural forest tree stands, particularly Acacia species in southern coasts of Iran has evoked local authorities to find out attributing factors and take appropriate steps to launch restoration programs and revive these limited and dispersed vegetations which have great impact on soil & water conservation and livestock fodder supply. To overcome the problem, first research findings at local and international levels for similar sites were surveyed. Then all growing factors in six selected sites were investigated and compared with the similar localities at different regions. This helped to figure out the causes of tree decline at Hormozgan province and adopt appropriate management approaches based on prevalent conditions, facilities and ecological characters.The results showed that prominent factors with combined effect include: drought and water stress, over maturity, lack of natural regeneration, overgrazing of livestock, development programs, soil erosion, deepening drain channels and soil salinity development. The most important action plans at the moment to restore the natural tree stands include: provide and modify water catchments systems,
re-plantation with proper tree species, manage livestock grazing and apply environmental considerations in all development projects.
کلیدواژهها [English]
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