High-level phytomass of mountain communities of various bioclimatic sectors of the Altai-Sayan mountain area

The presented paper is the continuation of stud-ies on the reserves of high-level phytomass (HLPh) of high mountain communities of the Altai-Sayan mountain area (ASMA). The analysis includes the stocks of NFM of 223 mountain communities of 25 reference grounds of vegetation. The total number of registration areas in the communities was 2230, where 900 correspond to humid, 640 to the semi-arid and 690 to the arid bioclimatic sector of ASMA. It was established that in the types of communities of different sectors the values of HLPh range from 218 to 4718 g/m2 (an average from 279 to 3714 g/m2) and the percentage of their mass remained quite stable. General patterns were revealed in the distri-bution of living high-level mass of communities‟ types of the area. So the share participation of mosses and lichens decreases from semiarid to arid, grasses - from arid to humid, shrubs and semi-shrubs - from arid to semiarid highlands in the stock of living mass. The mass of bushes de-creased in a number of communities from sub-highland shrubs to alpine meadows, but their pres-ence had significant effect on fractional composi-tion of the HLPh communities of different types of communities. There are significant differences be-tween the types of communities in different sectors according to the HLPh and the living mass.