A Ansari - Department of Environmental Sciences , Faculty of Agriculture and Natural Resources, Arak University , Arak , ۳۸۱۵۶-۸- ۸۳۴۹, Iran

The forbidden hunting area of Meighan wetland in central Iran is an important habitat for birds and habitats of desert and salt-resistant plants. This study was conducted by comparing and interpreting satellite imagery and sampling of wastewater and plants in the area. Results show, In the past due to the specific chemical composition and high salinity of the soil and water in the reservoir of the lake, no plant was able to be established. And the dominant vegetation type is the south-western margin of the salt-loving saline (Halocnemum-Salsola). And for aquatic birds it has been a temporary habitat. However, in recent years, with the entry of wastewater from the chemical compounds of Arak city sewage from the southwest to the Meighan wetland, the chemical quality of water and soil in this part of the wetland has changed. Therefore, the type of land cover and plant species of (Phragmites-Cyperus) from aquatic plants have replaced the salty and salty vegetarian type (Halocnemum-Salsola). As a result, the straw variety of (Phragmites-Cyperus) has changed 527 hectares of saline lake type and 225 hectares of rangelands with the (Halocnemum-Salsola) types. And has become a permanent habitat for aquatic plants and birds.