List of Articles Open Access Article Abstract Page Full-Text 1 - Zonation of rainfall erosivity strength; using Fournier method and some interpolation techniques (a case study of Ghazvin province) حسن ahmadi Open Access Article Abstract Page Full-Text 2 - Canopy gaps properties effect on regeneration of oriental beech (Fagus orientalis Lipsky) in the mixed beech stands Kiomars Sefidi Mohammad reza Marvi mohajer Vahid Etemad Raynhard Mozandel Open Access Article Abstract Page Full-Text 3 - Effect of fire vegetation on some properties of soil in rangelands of Bamo national park in Shiraz Parviz Gholami Jamshid Ghorbani Hasan Abbasi Open Access Article Abstract Page Full-Text 4 - Investigation of some Environmental Conditions effect on the Quality and Quantity of Essential Oil of Origanum vulgare L (Case study: Nemarestagh, Amol) Seyyedeh khadijeh Mahdavi Naser Sadegh nia omran Hasan Ghelich nia Narjes Alipoor Open Access Article Abstract Page Full-Text 5 - Evaluation of neural network and regression models to predict species diversity using some soil and physiographic factors (Case Study: Kharabeh Sanji watershed of Urmia) Behnam Bahrami Ardovan Ghorbani Open Access Article Abstract Page Full-Text 6 - Ecological investigation of changes in rangeland condition and its relationship to poisonous plants Kourosh Khalatbari Mohammad hasan Jouri Hamid reza Mehrabi Open Access Article Abstract Page Full-Text 7 - Factors affecting the rate of participation of beneficiaries in the implementation Range Management Plan (case study of summer pastures Vazroud area)