نتایج جستجو برای: drastic model
تعداد نتایج: 2112599 فیلتر نتایج به سال:
Ground water is regarded as an important source of sweet water because it has less pollution potential and it has high reserve capacity compared with surface water. Therefore, it I necessary to prevent pollution from ground water, considering management of ground water resources in line with quantitative management of water resources. In this research the potential vulnerability of ground water...
drastic model has been used to map groundwater vulnerability to pollution in many areas. since this method is used in different places without any changes, it cannot consider the effects of pollution type and characteristics. therefore, the method needs to be calibrated and corrected for a specific aquifer and pollution. in the present research, the rates of drastic parameters have been correct...
introduction one of the most vulnerable water resources against contamination is ground water table. these resources are exposed to contamination in various forms. identifying and controlling contamination in these resources are more difficult and costly than surface waters. also because of the persistence of contamination in these resources, the best way to prevent their contamination is to id...
introduction water is the most important parameter in the development of human societies. one of the pillars in the development of water resources is the investigation of environmental conditions and environmental compatibility of the project. identification of the areas vulnerable to pollution can play a major role in development strategies. in most areas of iran, located in the arid and semi-...
The issue of protection of groundwater against pollution is of crucial significance. Groundwater vulnerability maps provide useful information to protect groundwater resources and evaluate the potential for water quality improvement with changes in agricultural practices and land use applications. In Yazd province, especially in Abarkooh, the majority of agricultural and drinking water is provi...
در اکثر مناطق ایران آب زیرزمینی مهم ترین تامین کننده آب کشاورزی، شرب و صنعت است. از اینرو، دستیابی به روش های مناسب و موثر برای حفاظت از آبخوان ها در برابر آلودگی ها ضروری است. در این تحقیق، به منظور تهیه نقشه های پهنه بندی آسیب پذیری و حریم کیفی آبخوان بجنورد، واقع در استان خراسان شمالی، از سه روش drastic،ahp و fuzzy-ahp استفاده شده است. در گام نخست، نقشه آسیب پذیری ذاتی آبخوان با مدل drastic ...
1-introduction one of the problems that is important in the waste management is the topic of waste rural landfill site selection and latex resulting from that in rural areas. the latex can be because groundwater pollution the contamination vulnerability and groundwater protection assessment has proved to be an effective tool for the delineation of protection zones in area affected by groundwate...
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