Flora, life forms and chorotypes of plants in Khezr Abad, area (Orzank) Yazd province
2008
Bakhshi Khaniki,, Gh.R | Ghouchani,, R
Khezr Abad area with 1146 hectares area is located in the west of dasht-e- Yazd – Ardakan and west and northwest of Yazd. This area has several water shed, that Orzanak is one of biggest them. The main object of this research is indentification of plant species and introduction of the flora in Khezr Abad (Orzanak). For this purpose, plant samples were collected from different habitats, of the area in three growing seasons, spring, summer and autumn of 2004 year and the then were identified by different floras. The life forms of species were determined and the biological spectrum of he area was plotted. The position of the region was studied with respect to phytogeographical classification based on geographical data and references. From 103 identified plant species are 1gymnosperms, 86 dicotyledones and 16 monocotyledones. They belong to 30 families and 86 genera. The following families have the highest number of species: Asteraceae (%20.4), Poaceae (%12.6), Lamiaceae (%9.7), Fabaceae (%8.7) and Rosaceae (%7.8). Hemicryptophytes with 40 species (%38.8) and therophytes with 23 species (%22.3) are the most frequent life forms in the area. The distribution of 71 species (%68.9) is restricted to Irano-Turanian region, 29 species (%28.1) of them are endemics of Iran. Among of endemic species, two species Nepeta gloeocephala and Helichrysum davisianum are endemic of Yazd.
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