عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In this research, the changes in groundwater table and the volume of water reservoirs of the Kuhpayeh Segzi and southern Mahyar aquifers during the years ۱۹۸۱-۱۹۸۲ to ۲۰۱۲-۲۰۱۳ were investigated. For this purpose, the average level of aquifers' water table was calculated using the Thiessen method. The mean values of the groundwater table obtained from the Kuhpayeh Segzi and southern Mahyar aquifers were recorded as the average level of groundwater table in the Gavkhouni wetland during a ۲۲-years statistical period. Then, changes in the groundwater table and the water volume of Kuhpayeh Segzi and southern Mahyar aquifers, as well as the average changes of the above mentioned parameters were calculated for the wetland area. The trend of groundwater table changes was examined using the Mann-Kendall method. Finally, a hydrodynamic gradient map and field observations were applied to analyze the the interaction of the wetland and its leading aquifers. The results showed that the groundwater table in the Kuhpayeh Segzi and the southern Mahyar aquifers has decreased ۲.۷۵m and ۱۲.۸۳ m, respectively and the water volume of the aquifers was reduced by ۱۶۰ m۳ and ۳۰۰ m۳ per year, respectively, until the end of the statistical period studied. The results of Mann-Kendall test also showed a significant decrease in the level of groundwater table in the studied aquifers during the study period. In general, the level of groundwater and the volume of water resources in the wetland area has declined were ۷.۸ m and ۲۲۹ million m۳, respectively. Also, the results indicated that the Gavkhoni wetland had a nutritional role for the aquifers surrounding during ۲۲ years.