Investigation on environmental factors influencing distribution of plant species (case study: damghan region of Semnan province)

摘要

The understanding of relationship between plant and ecological characteristics in rangeland ecosystems is very important and it can help the managers to manage the rangelands.Many researchers have proven that plant associations influenced by Environmental Factors such as, soil characteristics topographic factors, precipitation and other factor in ecosystems(Lents, Ro.1984 ; Aeraz & Zayed,1996 ; Bruce,McCune & James Grace,2002 ; Zare, 2001 ; Jafari, 2004 ) The purpose of current study is to investigate the reasons of plant species distribution in association with environmental factors to find the most important governing factors in the relation between vegetation cover and environmental factors.