بررسی آت آکولوژی گونه های ‭Agropyron pectiniforme ‬و ‭Bromus tomentosus ‬در مراتع طبیعی استان مازندران

‭For study of aut ecology wheat grass(Agropyron pectiniforme) and brome grass(Bromus tomentosus) were selected 9 sites for Ag.pe and 4 sites for Br. to in Mazandaran rangelands. 3-500m transects located in the sites and assessment ecological properties in 30 plots I m2 in transects. The result of study show that Ag.pe growing in 1200-3000m height of sea in loamy and silt loam soils with EC=0.45-0.94d.s/m and pH==7.217.86‬ص ‭. The climate of sites is cold semi-arid and cold Mediterranean with mean annual precipitation 320-553mm and mean temperature 7.2-11.2 Co. Mean cover of Ag.pe is 7.2% and their mean of frequency is 36.55%. The seeds vitality vary is between 52%-100% and the mean weight of 1000 seeds is 2.79 r in sites. Br.to growing in 2300-3300m height of sea in loamy and silt loam soils with EC=OAO-0.45d.s/m and pH=7.21-7.47. The climate of sites is cold and ultra cold Mediterranean with mean annual precipitation: 510-653mm and mean temperature 7.2Co. Mean cover of Br. to is 16.75% and their mean of frequency is 59.5%. The seeds vitality vary is between 68%-100% and the mean weight of 1000 seeds is 3.35gr in sites. Key Words: Aut ecology- Bromus tomentosus- Agropyron pectiniforme- Rangelands- Mazandaran‬

کلیدواژه ها:

گونه ‭Agropyron pectiniforme ، ‬گونه ‭Bromus tomentosus ، ‬آت اکولوژی ، مراتع ، رویشگاه ، فنولوژی ، مازندران ، منطقه لاوشم ، منطقه باییجان ، منطقه رینه