ارزیابی شاخص خشکسالی رطوبت محصول (CMI) برعملکردگندم دیم مطالعه موردی(حوضه آبریزسیمینه رود دریاچه ارومیه)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکتری رشته اقلیم کشاورزی دانشگاه خوارزمی تهران

2 استاد آب وهواشناسی دانشگاه خوارزمی تهران

3 کارشناس ارشد سنجش ازدور و GIS دانشگاه تبریز

چکیده

خشکسالییک  نوع مخاطرهطبیعیاستکهاثراتسوء اقتصادیآندر کشاورزیدیم،سریعترازسایربخشهای کشاورزیاست. این مطالعه با هدف بررسی وضعیت خشکسالی در حوضه آبریز سیمینه رود در چهار ایستگاه سینوپتیک بوکان ، مهاباد، میاندوآب و سقز انجام شده و از سال 2007 تا 2010 مورد بررسی وتجزیه تحلیل قرار گرفته است. در این تحقیق میزان تنش خشکی برعملکرد محصول گندم دیم با استفاده ازشاخص رطوبت محصول پالمر  بصورت هفتگی به دست آمد. نتایج این شاخص نشان دادکهدربازه زمانیپرشدندانهتقریباً بین 20 اردیبهشت تا 15 خرداد مقدار شاخص رطوبت محصول منفی می باشد که نشان از تأثیر خشکسالی بر عملکرد محصول گندم دیم داشته است. ایستگاه سقز در شرایط رطوبتی مطلوب ولی ایستگاههای بوکان، مهاباد و میاندوآب در وضعیت تنش بوده و مقدار رطوبت در2010 درهمه ایستگاهها منفی بوده و منطقه در معرض خشکسالی شدید قرار داشته است.

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