Saeedeh Khaledi; Mohammad Nohtani; Mohammad reza Dahmardeh ghaleno
Abstract
In arid areas, water resources management and utilization is of great importance in minimizing the damage caused by water shortages in these areas while maximizing water resources efficiency. The present research aims to assess water resources management in Sistan with an approach to cope with dust storms ...
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In arid areas, water resources management and utilization is of great importance in minimizing the damage caused by water shortages in these areas while maximizing water resources efficiency. The present research aims to assess water resources management in Sistan with an approach to cope with dust storms and desertification phenomena using lexicographic goal programming method. Lexicographic goal programming is one of the most important multi-objective optimization problem solving methods. GAMS programming was considered to design research model. The results showed that according to the experts, in order to coping with dusts phenomenon, followed by meeting domestic demands in Sistan, water transfer priorities are related to critical control point of Hamoon Wetland and plantation areas in wind sedimentation. For this, once research model was run and under optimal water resources management, in addition to meeting all domestic consumption demands, the amount of water transmitted to Hamoon Lake to supply its minimum water requirement was 61.4 million cubic meters. Hence, the water needed for the stabilization of the critical control point of Hamoon Wetland was fully supplied. In addition, under optimal management conditions, water transportation to plantation farms of northern Mohammad Shahkarm and Jazinak cities was increased by 13.22 and 7.76 million cubic meters, respectively, i.e. up to twice a current value. As a result, all of water demands in these sectors have been met completely. According to the results, under optimal water management conditions in addition to meeting basic needs, water transferring to critical control point of fine grain sediment origins to stabilize them.
Mohammad Reza Dahmardeh Ghaleno; Mohammad Nohtani; Saeedeh Khaledi
Abstract
Human interventions on natural trend and overexploitation of natural resources, altogether have interrupted nature reclamation and accelerated its degradation. The present research aims to determine anthropogenic factors on wind erosion intensification in Hamun area, Sistan. The study populations included ...
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Human interventions on natural trend and overexploitation of natural resources, altogether have interrupted nature reclamation and accelerated its degradation. The present research aims to determine anthropogenic factors on wind erosion intensification in Hamun area, Sistan. The study populations included two groups, first all experts in the natural resources sector in city of Zabol (36 experts) which were surveyed and second group included all households in Hamoon area of Sistan which their number was 4121 households and according to Cochran formula, the sample size was obtained 221 households. The results of the questionnaires responded by experts showed that off-season cultivation of melon Hamoon lake bed, Excavation of water storing pits and manipulation of stabilized Lake bed and overgrazing vegetation in Hamoon bed are found to be the most important factors in exacerbation of wind erosion in this area. Pearson correlation coefficient was used to determine anthropogenic factors affecting the above three factors. Data analysis showed that experience of stakeholders and number of stockholders family members both have positive significant role in increasing our off-season cultivation of melons on the lake bed, Excavation of water storing pits and grazing on lake bed in 99% confidence level. On the other hand those stakeholders owning greater farmlands, high education level and income have fewer tendencies to overexploitation and degrade area.
