Floristic composition in Baraki Barak district, Logar Province, Afghanistan

Floristic studies are the first step towards understanding ecological conditions, plant geography, identification of new plant species, destructive factors in natural habitats and conservation of genetic resources. The present study provides an analysis of the floristic composition, life form and chorology of the plant species of Baraki Barak district, located southeast Kabul in Logar province. All plant specimens were collected in summer ۲۰۲۰ and spring ۲۰۲۱. The plant specimens were dried, transferred to the herbarium of the University of Guilan, Rasht, Iran and identified using Identification keys. The results led to the identification of ۱۲۰ species of angiosperms belonging to ۹۷ genera and ۳۱ families. Asteraceae (۲۳ species), Brassicaceae and Fabaceae (۱۰ species each) were the largest families in the region. The results showed that therophytes with ۵۴ species (۴۵.۳۷%) and hemicryptophytes with ۴۲ species (۳۵.۲۹%) were the most abundant life forms in the region. In terms of geographical distribution, most species belong to pluriregional (۲۷.۵۰ %) and Irano-Turanian elements (۱۸.۳۳ %). In addition, the current results led to the identification of three and ۱۵ new species for Afghanistan and Logar Province, respectively

کلیدواژه ها:

Chorology ، Floristic ، Life form ، Genera ، Species