Modelling of radiation transfer through natural multilayer media is relevant for many climatological, hydrological and ecological issues. Te possibility of using the models is determined by the comprehensiveness of
the information on the properties and structure of certain layers: ground, vegetation, atmosphere. Tree-dimensional spatial organisation of tundra vegetation cover is understudied compared to vegetation structure
of the boreal zone. In the scope of the research, the structure of sedge-tundra vegetation cover in the Nenets
Autonomous Area and the Murmansk Region was investigated using specialised hardware-sofware system
which allows to take photos of the cover from diferent angles, construct virtual three-dimensional models
and obtain the values of parameters characterising the structure. Te feld survey of the sites was carried
out in August 2016 and 2017. Phytoelement angle distributions obtained difer from standard erectophile
distribution frequently used for modelling orientation of phytoelements in cover formed by grasses/sedges.
Te shape of phytoelement angle distribution varies from site to site depending on the dominant species.
Experiments on ftting real distributions by diferent functions established that the generalised shape of the
distribution in the studied cover is best described by a rotated-ellipsoidal function with a parameter equal to
2.69. Information obtained on the structure of the vegetation cover can be used in modelling microwaves and
solar radiation propagation.