maliheh mahmoudi

Diapir is a process in which material with a lower specific weight rises from the upper layers, breaks them and appears on the surface of the earth. In this process, the type of salt's response to the applied stresses creates specific geomorphological forms, which study is important due to the presence of oil resources, the establishment of human settlements, and the passage of communication routes.Failure to pay attention to salt diapirism studies in construction projects can cause their failure.In this research, which was conducted with the aim of investigating the geomorphology caused by salt diapirs, in the south of Semnan privance and with field, library and Remote Sensing methods, it was found that salt deposits cause the creation of specific geomorphological structures and shapes through the creation of tension. local cracks, surface dislocations and tensile fractures.Also, the fluidity of salt has been created on the surface structures and their dimensions are effective, and these structures, in turn, create local forces and control the morpho-geo-structural situation of the region.In addition, the dissolution process has played an important role in the formation of salt karsts in the region and has created significant shapes.Based on this, the geomorphological forms resulting from the Salt diapirismof the region were identified and in three groups of building forms including salt domes, salt anticlines and salt walls, salt karsts including dolines, ponors, karns and forms resulting from hydrological processes including valleys, springs, salt fluxes and salt glaciers were classified.

Sclerorhachis leptoclada belongs to Asteraceae family is one of the most medicine vegetable in traditional medicine in Birjand. In many field observation duos to investigate of aut ecology, ethnopharmacology and ecomorphology of Sclorhachis leptoclada Boiss. aerial parts of plant in blooming were collected from Ark (1395-1396). Ethno pharmacological data and biological spectrum of medicinal plants were obtained from rural healers. Also, by selecting three points in the habitat and three heights in each position, morphological characteristics such as plant height, number of leaves, number of flowering stems, dry weight and tremor were evaluated at the flowering stage. Results showed that this natural plant was wild grew in sandy loam soil, Ec=8/18, PH=7, Plant flowers appeared in Jun and May falled in late of July. Biological spectrum was showed that 31 medicine plants were grow wild in this region belongs to Asteraceae (19/3%), Apiaceae (12/9%), Lamiaceae (16/1), and in terms of biophyte Therophytes with 13 species (93.41%), Geophytes with 11 species (48.35%), Had the largest number of species and mostly belonged to the Iranian-Turanian, Mediterranean (41.9%) European-Siberian, Mediterranean (19.3%) origin. The results also showed that with increasing altitude in all three selected locations in the habitat, the number of leaves, dry and wet weight and plant height decreased. Finally, the observed diversity can be related to the role of altitude and the genetic structure of the populations, which can also be considered as a kind of adaptation and physiological response of Mastar to environmental conditions.