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مقایسهی کارایی مدل اکولوژیکی مخدوم و فائو برای برآورد توان اکولوژیکی کاربری کشاورزی و مرتعداری (مطالعه موردی: حوضه آبخیز آبهار خوزستان) | ||
دانش کشاورزی وتولید پایدار | ||
مقاله 6، دوره 28، شماره 3، مهر 1397، صفحه 67-78 اصل مقاله (741.44 K) | ||
نوع مقاله: مقاله پژوهشی | ||
نویسندگان | ||
ایرج حاتمی کاهکش؛ سولماز دشتی* ؛ سینا عطار روشن | ||
گروه محیط زیست، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران | ||
چکیده | ||
این پژوهش با هدف مقایسهی کارایی مدل اکولوژیکی مخدوم و فائو برای برآورد توان اکولوژیکی کاربری اراضی مرتعداری و کشاورزی در حوضه آبخیز آبهار خوزستان انجام پذیرفته است. پس از جمعآوری اطلاعات مورد نیاز در روش مخدوم تجزیه و تحلیل، جمعبندی و ارزیابی توان بصورت سیستمی انجام پذیرفت. سپس در روش فائو نیز پس از جمعآوری اطلاعات، بررسی محدودیتها و سطوح توان هر یک از اجزاء واحد اراضی، نقشه استعدادهای اراضی ایجاد گردید. بر اساس روش مخدوم، 39/23 درصد منطقه دارای توان طبقه دو برای کاربری کشاورزی و میزان 17/22 درصد دارای توان طبقه سه برای همین کاربری و همچنین میزان 03/33 درصد دارای توان درجه 1 (طبقه 4 مدل) جهت کاربری مرتعداری و 41/21 درصد دارای توان درجه 2 (طبقه 5 مدل) برای کاربری مرتعداری میباشد. در مدل فائو از کل مساحت منطقه مورد مطالعه به میزان 66/11 درصد دارای کلاس IV برای زراعت آبی و 26/11 درصد دارای تناسب کلاس IV برای زراعت دیم میباشد و به میزان 08/77 درصد توان مناسب برای کاربری مرتع را دارا میباشند. با جمعبندی کلیه اطلاعات بدست آمده و تناسب حاصل دو روش تقریبا حدود 35 درصد اراضی حوضه دارای توان لازم جهت کاربری کشاورزی میباشد و مابقی آن یعنی حدود 65 درصد مساحت کل عرصه جهت کاربری مرتعداری مناسب است. همچنین در روش فائو میزان اراضی مناسب و دارای توان اکولوژیکی جهت کاربری کشاورزی نسبت به روش تجزیه و تحلیل سیستمی مخدوم کمتر است و در عوض به همین میزان به سطح کاربری مرتعداری افزوده شده است. | ||
کلیدواژهها | ||
ارزیابی توان اکولوژیک؛ کاربری اراضی؛ روش فائو؛ روش مخدوم؛ حوضه آبخیز آبهار | ||
مراجع | ||
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