List of Articles Amameh

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Evaluation of land-use change and its effect on flood hydrograph in Amameh watershed, Tehran Province
  Maral Pezeshki Baharak Motamedvaziri Hasan Ahmadi
  Changes in the land-use pattern has affected hydrological processes in the watersheds and disrupted the natural balance of water flow. In the present study, changes in hydrological components of Amameh watershed as a result of land-use changes from1988 - 2013 were studi More

  Changes in the land-use pattern has affected hydrological processes in the watersheds and disrupted the natural balance of water flow. In the present study, changes in hydrological components of Amameh watershed as a result of land-use changes from1988 - 2013 were studied. Due to lack of the land-use map in past years, the land-use map was prepared and analyzed by Landsat TM satellite images in the ERDAS Imagine software in 1988. Furthermore, the available ‎information were used to provide land-use map ‎in 2013. Land-use maps of 1988 - 2013 were prepared using ArcGIS software. In existing maps, six land-use classes; class 1, 2, and 3 rangelands, agricultural and ‎garden, arid land, and river-bed were designed. ‎ The results showed that Amameh watershed was affected by severe changes in the land-use‎ during the study period, so that the class 1 rangelands‎ to class 2, class 2 to class 3, and even arid‎ land were changed. In addition, the residential areas (villa) were increased from 2.5% in 1988 to 8.4 in 2013. The HEC-HMS model was used to investigate the effect of land-use changes on the hydrological flood hydrograph of Amameh watershed‎. The results of hydrograph study of 1988 and 2013 showed the volume increase of runoff and peak discharge rates during the 25-year period, and also the watershed runoff coefficient was increased from 0.82 to 0.89. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Evaluation of climate change performance using two hydrological models with different structures
  Sadegh Valeh Baharak Motamedvaziri Hadi Kiadaliri Hasan Ahmadi
  10.30495/wsrcj.2021.18544
  One of the major challenges affecting the natural ecosystems and various aspects of human life is climate change. The effects of global warming on the hydrology and water cycle in nature are very serious, and the quantitative recognition of these effects creates more re More

  One of the major challenges affecting the natural ecosystems and various aspects of human life is climate change. The effects of global warming on the hydrology and water cycle in nature are very serious, and the quantitative recognition of these effects creates more readiness to deal with its consequences. In the present study, the black box model (artificial neural network) and the semi-distributed model (SWAT) were selected and examined according to error and uncertainty. This paper employed the large-scale model (CanESM2) under scenarios RCP2.6 and RCP8.5 to investigate the effect of climate change. The results of climate change in this study showed that runoff (3-59%) and temperature (1.53-6.93 °C) have an increasing trend. In particular, this increasing trend is further exhibited by extreme values and severe floods. Also, the amount of runoff will increase by 7-11% in the upcoming period. For this reason, it is necessary to pay attention in urban studies to the increase of flood occurrence in the future. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - The effect of grassland conversion to the other agricultural uses on some soil physicochemical properties (Case Study: Watershed Basin of Amameh)
  Mohammad Pichand
  The change of rangeland to agricultural lands has serious effects on the amount of soil organic matter and physico- chemical characteristics. This study was conducted to investigating the effects of rangeland conversion into agricultural land use on soil properties in A More

  The change of rangeland to agricultural lands has serious effects on the amount of soil organic matter and physico- chemical characteristics. This study was conducted to investigating the effects of rangeland conversion into agricultural land use on soil properties in Amameh watershed (Tehran province). Four land use types were selected including rangeland, fallow, orchard and agricultural lands. Soil sampling was carried out as random systematic method (three repeat for each land use) from 0-30 cm depths. Some soil properties such as pH, electrical conductivity, calcium carbonate, sodium, Saturation, magnesium, phosphorus, potassium, carbon and gravel were measured. Statistical analysis were also performed on the data and the results showed that changing land use from rangeland to agricultural lands, fallow and orchard did not show any significant changes on pH, Mg and Na; whereas electrical conductivity, gravel, calcium carbonate, Saturation, carbon, potassium and phosphorus showed significant changes due to the land use change. The results revealed that by changing land use from rangeland to other use types the amounts of calcium carbonate, phosphorous, potassium and gravel have decreased, more obviously in fallow and agricultural lands. In addition, soil carbon increased, this was due to land-use conversion from rangeland to orchard and agriculture. Moreover, electrical conductivity, Saturation, potassium, phosphorus and carbon in the orchard were significantly higher than the other land uses. Generally, results of this study showed that changing land use had significant effect on the soil properties. Manuscript profile