Study of floristic and plant geography Miandar region in Gilangh

Introduction :

Miandar region is located at a distance of 3 km from Gilangharb city. This region is located at 45 degrees and 51 minutes to 46 degrees and 37 minutes east longitude and 33 degrees and 49 minutes latitude to 34 degrees and 28 minutes north. The average annual rainfall is 384 mm and the altitude of the region is 810 meters above sea level.

Purpose of the research:

 The purpose of this study was floristic and plant geography of Miandar region in Gilan-e-Gharb city.

Methodology :

After preparing the map (scale: 1: 25000) and viewing the photos and determining the geographical area, the plants were collected in late winter and all the months of spring and summer 2011. The collected samples were dried according to the conventional method and attached to the cardboard of each barium. Samples of each barium were identified and placed in Payam-e-Noor University of Gilan-e-Gharb each time.

Geographical area of research: 

The purpose of this study was to study the floristics and plant geography of Miandar region in Gilangharb County.

The plant collection of this region is 229 plant species belonging to 41 genera and 148 genera. Asteraceae (33 species, 14.41%), papilionaceae (22 species, 9.6%) poaceae (19 species) , 8.3%) Apiaceae (16 species, 6.99%), Lamiaceae (15 species, 6.55%) and Liliaceae (12 species, 5.24%) are the most important plant genera in the region, which in total 51.9% of the total Species are included. The largest plant species in the study area are Astraglus (10 species), Silene (5 species), Euphorbia (5 species). In terms of biological form, 40.6% of the species are hemicryptophytes, 35.38% are therophytes, 11.36% are cryptophytes, 8.3% are phanrophytes, 3.94% are kamphites and 0.44% are geophytes.

The geographical distribution of the flora of the region showed that the highest geographical distribution is related to the Iranian-Turanian region with 122 species (53.27%) and Iranian-Turanian / Mediterranean with 34 species (14.85%). Keyword: FLORA,