Study of some ecological characteristics of Vitex agnus-castus L. in Qom province

Vitex agnus-castus species of Lamiaceae family and is native to the Mediterranean region and Central Asia. In this investigation, some ecological characteristics of this species were studied in two representer sites representing in Qom province (Iran) in random-systematic method. In these sites, density, coverage, height, stem diameter, companion species and regeneration of Vitex were measured. Cover shrubs were determined by measuring the diameter of large and small crown. Also, three soil samples were taken from the depth gathering of roots and some of their chemical and physical properties were measured. The measured characteristics of soil included texture, electrical conductivity (EC), acidity (pH), nitrogen (N), phosphorus (P), potassium (K) and organic matter (OM). The raw data were analyzed by ANOVA method in Minitab software ver.14. According to the results, plants height, show significant difference at 5% level (P