The arid regions are fragile and sensitive ecological environment and are vulnerable to desertification. This critical area around arid region where desertification occurs determines the ecological stability of the deserts. In order to combat desertification and decreasing its risks, the restoration projects using varieties of plant species were applied that could change the soil properties and...

یکی از گونه­های چوبی کمتر شناخته شده بومی منطقه زیر کوه قائن در شرق ایران، ammodendron persicum با نام محلی دیودال می باشد. در این تحقیق از سه پایه منتخب برای مطالعات ویژگی­های چوب آن استفاده گردید. برای اولین بار چوب این گونه کویری از جنبه­های مختلف فیزیکی و آناتومیکی مورد مطالعه قرار گرفته است. نتایج بررسی­ها نشان داد چوب گونه دیودال جزء پهن برگان بخش روزنه­ای می­باشد که سرتاسر مقطع عرضی آن د...

abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...

Due to the harsh environmental conditions in arid and semi-arid area of country, it is essential to assess the factors affecting the vegetation in such areas. This study aimed to investigate the effect of some soil physicochemical properties (including texture, bulk density, moisture, organic matter, carbon, nitrogen, potassium, lime, sodium, electrical conductivity and pH) on Haloxylon persicu...

Introduction: With thirteen critical erosion hubs containing an area of roughly 532 thousand hectares, and 14 regions influenced by wind erosion with an area of 1144311 hectares, the Yazd province ranks fifth among the Iranian provinces in terms of the magnitude of crisis hub, and third in terms of the extent of affected areas. The history of desertification activities in the province dates bac...