بررسي فلوريستيكي و آلولوژيكي جوامع گياهي تالاب گاوخوني

Ghavkhoni wetland is a protected area in about 140 km southeast of Esfahan. In this study a total of 63 species were identified. The following families have the highest number of species: Chenopodiaceae, Asteraceae and Brassicaceae. 33 species (52.4%) are endemics of Irano-Turanian region. Of these, 5 species are endemics of Iran: Callingonum bungei, Echinops robustus, Fortuynia garcinii, Paracaryum salsum and Sterigmostemum longistylum. Therophytes with 30 species (47.6%) are the most frequent life from in the wetland. The vegetation of Ghavkhoni wetland was studied, using the Braum-Blanquet school. 83 releves in different association individuals were recorded. Phytosociological data were analysed by FCA and HAC methods, using the computer program of Anaphyto. 14 association were distinguished, that belong to 7 classes, 8 orders and 10 alliances. The following associations constitute the major part of the natural vegetation of the study area: Halocnemetum strobilacei, Seidlitzio romarini-Salsoletum turcomanicae, Astragaletum squarrosi, Seidlitzietum rosmarini and Artemisietum sieberi. The distribution and zonation of plant communities are mainly affected by ground level, water table and edaphic features including salinity, texture, organic matter and gypsum.