Investigation of changes in relation to some circumferential factor of Almagol lagoon

Destruction the earth in the arid and semi-arid ecosystems is considered as an environmental serious problem in 21th century that effect on the universe population.. The purpose of the present research is study the relationshipp between vegetation and soil feature, determine the most important environmental factors on separate types of eruption on the suberb lands of Alma Gol Pond. The sampling done randomly. To determine the correlation between environment and vegetation, for environmental facters used canoncial correspondence analysis, and to ordinate the types of eruption used cluster analysis by using CANOCO and PC-ord softwars. Cluster analysis results shown 50% similarity between 7 groups of plants, and the results of cononcial correspondence analysis show that plants react differently to environmental factors. So the plants groups which from plant communities are effected by similar environmental factors. Hygroscopic and moisture escape plants seperated totally. The hygroscopics contain Rumex acctatus, the moisture escape contain Artemisia siberi and Hordeum morinum, the communities on hillsides and height cotain Salsola turcomaniea, Phalaris minor, the halophyts communities contain Salicornia europa and salsola aurontiaceae. The non passion communities contain Plantago cornopus and Juncus inflexus. The results of this research show that the environmental factors effect on the establishment and mosaic distributon of plant communities, and the most important factors effective on plant communitiesseperation are soil acidity and soil salinity.