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داود بهارلویی شجاع قربانی دشتكی بیژن خلیل مقدم مهدی نادری پژمان طهماسبی

چکیده

پژوهش حاضر به منظور بررسی تاثیر آتش‌سوزی بر میزان فرسایش پاشمانی و برخی ویژگیهای وابسته به فرسایش خاک در مناطقی که طی سال‌های 1387، 1388، 1389 و 1390 در مراتع کرسنک دچار آتش‌سوزی شده‌اند، انجام گردیده است. نمونه برداری در سال 1391 انجام و از هر منطقه 16 نمونه (8 نمونه از منطقه سوخته شده و 8 نمونه به عنوان شاهد) از عمق 7-0 سانتی متری برداشته شد. فرسایش پاشمانی در 2 شیب 9 و 46 درصد با شدت بارش 2 میلی متر بر دقیقه با استفاده از کاسه پاشمان چند متغیره اندازه‌گیری شد. تجزیه و تحلیل آماری داده ها توسط آزمون t مستقل در سطح 5 درصد انجام شد. نتایج نشان داد که خاک پاشمان شده در مناطق سوخته ‌شده افزایش معنی‌دار در تیمار 1 سال پس از آتش سوزی در هر دو شیب 9 و 46 درصد و همچنین در تیمار 2 سال پس از آتش سوزی در شیب 46 درصد داشت. سایر ویژگی های اندازه‌گیری شده نیز (بجز کربنات کلسیم معادل) تحت تاثیر آتش‌سوزی قرار گرفته بود. همچنین بسیاری از ویژگی‌ها تنها در 2 سال اول پس از آتش‌سوزی دارای اختلاف معنی‌دار با مناطق شاهد بوده اند ولی در سال‌های سوم و چهارم پس از آتش‌سوزی به شرایط اولیه خود نزدیک گردیده اند.

جزئیات مقاله

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ارجاع به مقاله
بهارلویید., قربانی دشتكیش., خلیل مقدمب., نادریم., & طهماسبیپ. (2015). تاثیرآتشسوزی برفرسایش پاشمانی خاک درمراتع نیمه استپی کرسنک،چهارمحال وبختیاری. آب و خاک, 29(4), 898-907. https://doi.org/10.22067/jsw.v0i0.31000
نوع مقاله
علمی - پژوهشی