List of Articles R11

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  1 - Comprehensive Biophysical-Economic Modeling of Climate and Agriculture (Case Study: Roodshour Watershed)
  Abouzar Parhizkari gholamreza yavari abolfazl mahmoodi gholamreza bakhshi khaniki
  In this study using panel dataset (combining the time series data related to the climatic variables of rainfall during 1986-2016 and the cross sectional data related to the base year 2015-2016) the comprehensive biophysical-economic modeling of climate and agriculture i More

  In this study using panel dataset (combining the time series data related to the climatic variables of rainfall during 1986-2016 and the cross sectional data related to the base year 2015-2016) the comprehensive biophysical-economic modeling of climate and agriculture in Roodshour watershed basin was studied. In order to achieve the applied results, modeling is done by combining two parts of the biophysical (the products yield estimation model) and the economic (positive mathematical programming model) under mild, moderate and severe testing scenarios and with advanced programming in the GAMS 24.7 software environment. The results show that after year 2001, behavioral pattern of rainfall climate variable was accompanied with a decreasing trend in the Roodeshoor basin. With occurrence of the climate change resulting from rainfall reduction under mild, medium and intense scenarios, the available water resources decreased 5/75 to 13/8 percent, agricultural products decreased 3/60 to 8/54 percent and farmers' gross profit decreased 2/71 to 8/04 percent. But the economic value of irrigation water increases 5/13 to 12/7 percent ratio to base year. Finally, in order to protection of the water resources in the Roodeshoor basin and coping with the effects of climate change, Redetermination of the rate of water charge to farmers on the basis of equality consideration, fallow-lands and equipping farms to modern irrigation systems were proposed. Manuscript profile
• Open Access Article
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  2 - Study of Relationship between Food Security with Urban Population and Development Plans in Iran
  jalal salem
  The purpose of this study is investigating the food security among the Iranian's urban households and effective factors involved for the period of 1983 to 2011. For this purpose, time series pattern used for evaluating the effective factors. The results showed that duri More

  The purpose of this study is investigating the food security among the Iranian's urban households and effective factors involved for the period of 1983 to 2011. For this purpose, time series pattern used for evaluating the effective factors. The results showed that during the period the food security of urban households had an increasing trend. Despite the enhancement of food security among urban households, 5.1 percent of the urban population received less than necessary calorie level in 2011. The effect of the percentage of urban population on urban households' food security index has been negative, although not significant at an appropriate level. The lag variable of aggregate food security index changes on growth of aggregate food security index in the next year will be negative, so that increasing in one unit growth of food security index in one year; its growth will be decreased by 0.008 units in the next year. According to the results, the index stability and keeping its increasing trend should be considered as a priority in the future development plans. Manuscript profile