knowledge of behavior climatic indexes can be help to planning future programs bahabad study area in the eastern part of the province of yazd with a hot and dry climate, high potential evapotranspiration and low rainfall has a high potential for desertification. the aim of this research is evaluation of classification intensity by imdpa model with emphasis to climate criteria. the indices inclu...

هصلاخلا ودلا ريدقتل هديدج هيفيط هقيرط ريوطت هساردلا هذه يف مت ملا يف نيماب ح تسملا و هيئاملا ليلا ح تارض هينلاديصلا . هدسكؤم ةدامك مويساتوبلا تادويرب اتيم دوجوب نيمرياتلا عم نيمابودلا لعافت ىلع هقيرطلا تدنتسا . تسيق يجوملا لوطلا دنع صاصتما ىصقا تطعاو ءاملا يف هبئاذلا هجتانلا هيوضعلا هغبصلا هيصاصتما 274 رتيمونان . تتاك هيطخلا نيبام 5.0 ىلا 45 مارغوركيام / لم , ناكف فشكلا دح اما 5.40 مارغو...

One of the characteristics in Iranian Model of Desertification Potential Assessment (IMDPA) is vegetation. Sincevegetation is very important factor in the degradation of land, so some indices were determined for this item in order toevaluate desertification potential of arid, semi arid and arid sub humid areas of Iran. The indices included vegetationcondition, exploit and revegetation. To calib...

In many countries, studies to determine the severity of desertification and providing land plans to implement desertification. One of the models is modified MEDALUS or Iranian model (IMDPA), has been used in present research in order to investigate desertification situation in the Tashk region of Fars province. In this research, the modified IMDPA model used with emphasis on the water, soil and...

In this paper new semi-empirical formulas are developed to evaluate the variation of both real and imaginary parts of soil complex permittivity with depth inside the earth's surface. Computed values using these models show good agreement with published measured values for soils of the same textures and same frequency band. Use of these models may serve to handle more accurate results especially...