Environmental (topography, climate) features have an important influence on plant diversity and richness of Iran. Topography is from –28m which is close to Caspian Sea to 5678m which is located on the Alborz Mountain. Two mountains (Alborz and Zagrosss) prevent moist air moving to the centre of Iran. On the basis of environmental factors, four ecological zones with specific plant richness from ...

The geographic distribution of Astragalus (Fabaceae) in Iran was analyzed using a database of 7606 georeferencedobservations. Astragalus occurs in all provinces of Iran, but 88% ofthe observations are in five provinces including Tehran, West-Azerbaijan, Esfahan, Kordestan, and Khorasan-e Razavi.Most species are rare and narrowly endemic: Thelargest distance between two observations of the same ...

springs are the important water resources, which thier study is necessary in terms of their management and exploitation. in northern iran, the karst springs locate in the central alborz highlands and alluvial springs on the caspian southern coasts.the karst and alluvial springs discharge is variable because of different conditions in terms of aquifer, topography and precipitation .this study ha...

Feldspar grains, as a significant provenance indicator, of two terrigenous formations from Central Iran, the Upper Red Formation, and Moghan area, Zivah Formation, are used for provenance determination and the study of transportation and depositional history. The Upper Red Formation (URF) is volumetrically the most important siliciclastic unit of the Central Iran and Zivah Formation (ZF) repres...

The archaeological mound of Sofalin south of the Alborz Mountains of Northern Iran (Eastern Rey plain) sheds considerablelight on at least four problems connected with the emergence of complex societies in this part of Iran. The first, it helpsfill a chronological gap in an important archaeological sequence by revealing a previously unidentified late fourth andthird millennium B.C. sequence of ...

Abstract The 350 km-long Adjara-Trialeti fold-and-thrust belt of southwestern Georgia is the result structural inversion a continental back-arc basin developed in Paleogene on upper (Eurasian) plate northward subducting northern branch Neotethys. Low-temperature thermochronological data [fission-track and (U-Th)/He analyses apatite] from sedimentary plutonic rocks provide robust constraints tec...

the presence of glacial deposits is among the most important evidences of quaternary climatic changes. the aalamkooh and thakht-e-solieman glaciers are the samples of those glaciers in the alborz mountains. all iranian and foreign researchers who have worked on the alamkooh glaciers believe the glaciers of northern alborz are parts of active ones in iran. the objective of this research is inves...

the presence of glacial deposits is among the most important evidences of quaternary climatic changes. the aalamkooh and thakht-e-solieman glaciers are the samples of those glaciers in the alborz mountains. all iranian and foreign researchers who have worked on the alamkooh glaciers believe the glaciers of northern alborz are parts of active ones in iran. the objective of this research is inves...