نوع مقاله : مقاله پژوهشی
نویسنده
دانشجوی دکتری تخصصی بیابانزدایی، دانشگاه علوم کشاورزی و منابع طبیعی گرگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسنده [English]
Desertification is a phenomenon that ranks among the greatest environmental challenges of our time. This phenomenon is a global issue, with serious implications worldwide for biodiversity, eco-safety, poverty eradication, socio-economic stability and sustainable development. The most suitable methods for desertification assessment intensity considered to be experimental models. In order to evaluate desertification in Mazinan region, the soil criterion of ESAs model was used. For this purpose, work unit map (geomorphologic facies) was created using slope, geology, elevation, vegetation cover, land use, Landsat 5 satellite imagery and Google Earth data. Then, in each work unit, soil criterion was assessed based on the selected indices. Then, desertification intensity map of the region was obtained using the geometric average of all indices. The results showed that drainage condition and Rock's fragments have the most severe impacts on desertification with weighted mean of 1.51, and 1.50, respectively. Mazinan region was divided into four classes of Non-classified, Potential, Fragile, and Critical classes which the largest area of the region is covered by Fragile class (38.04 %).
کلیدواژهها [English]
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