جستجوی مقالات مرتبط با کلیدواژه "کموگراف" در نشریات گروه "آبخیزداری، بیابان، محیط زیست، مرتع"

In recent years, rainfall reduction and the occurrence of drought phenomenon has exacerbated the quality changes of Zeydon plain groundwater. Therefore, this study was carried out to evaluate the rainfall fluctuations on the quality of groundwater and to improve the utilization management and optimal utilization of groundwater resources. In this study, sampling of the water resources of Zeydon plain was performed in two stages in order to study the quality of Zeydon plain groundwater and assess the role of rainfall in the qualitative results of these resources. First, 10 samples of water wells in April 2012 as the rainy season and then 10 samples were selected in September 2012 as the dry season. Finally, it was concluded that in terms of quality along with the rainfall, the concentration of groundwater ions and salts in this plain is increased, which means that during rainy years along with the rainfall, the quality of the aquifer groundwater is getting worse. Based on the obtained reviews, the increase in the concentration of ions during rainfall in Zeydon aquifer is due to the presence of Gachsaran, Mishan and Aghajari formations in the north of the plain and the high groundwater level in some areas, especially in the center of the plain.

Ground water is one of the major resources of fresh water needed for humans, especially in arid areas. It will be seriously threatened in future due to climate change and global warming. The purpose of this study is to examine the effects of climate change on groundwater resources in the Kerman-Baghin plain. Accordingly, climate prediction at 2055 horizon (2065-2046) was used by the atmospheric general circulation model HadCM3 with A2 emissions scenario. Also groundwater table during the years (1986 -2009) and the quality situation (salinity) over the years (2003-2009) were studied. The results of LARS-WG model showed that the average annual rainfall at the 2055 horizon will be reduced about 3.6 mm. Also the annual maximum and minimum temperatures will increase during the 2055 horizon, 2.8°C and 2.8 °C, respectively. Assessing of unit hydrograph and chemograph in Kerman- Baghin plain highlighted a drop in the water table (0.89 meter depletion per year) and increase of aquifer salinity. According to the results of atmospheric general circulation model (HadCM3), this trend in the water table and increase in aquifer salinity expected to be continued.