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اثر سه سال آتش‌سوزی متوالی بر برخی از ویژگی‌های فیزیکی و شیمیایی یک خاک جنگلی در اطراف دریاچه زریوار مریوان | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 18، دوره 46، شماره 3، مهر 1394، صفحه 555-565 اصل مقاله (763.25 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2015.56744 | ||
| نویسندگان | ||
| زاهد شریفی* 1؛ چیاکو نظری2؛ کیومرث محمدی سمانی3؛ نقی شعانیان4 | ||
| 1استادیار گروه علوم و مهندسی خاک دانشکدة کشاورزی دانشگاه کردستان، سنندج | ||
| 2دانشجوی کارشناسی ارشد گروه جنگلداری دانشکدة منابع طبیعی دانشگاه کردستان، سنندج | ||
| 3استادیار گروه جنگلداری و مرکز پژوهش و توسعة جنگلداری زاگرس شمالی، دانشکدة منابع طبیعی دانشگاه کردستان، سنندج | ||
| 4دانشیار گروه جنگلداری و مرکز پژوهش و توسعة جنگلداری زاگرس شمالی، دانشکدة منابع طبیعی دانشگاه کردستان، سنندج | ||
| چکیده | ||
| این پژوهش به منظور بررسی اثر سه سال آتش‌سوزی متوالی بر برخی ویژگی‌های فیزیکی و شیمیایی خاک سطحی (0ـ 5 سانتیمتر) و خاک زیرسطحی (5ـ 10 سانتیمتر) در جنگل تپه درویش واقع در اطراف دریاچۀ زریوار مریوان انجام شد. تیمار شاهد نیز با شرایط یکسان در کنار منطقة سوخته و بدون اثر آتش‌سوزی انتخاب شد. از منطقة سوخته و شاهد هر یک سه نمونة تصادفی مرکب، از دو عمق یادشده، برداشته شد. نمونهها برای بافت خاک، pH، هدایت الکتریکی (EC)، ظرفیت تبادل کاتیونی (CEC)، کربن آلی کل، نیتروژن کل و نیتروژن نیتراتی (NO3--N) و آمونیومی (NH4+-N)، فسفر، پتاسیم، کلسیم، و منیزیم قابل دسترس و همچنین کربنات کلسیم معادل (TNV) با استفاده از روشهای استاندارد تجزیه شدند. نتایج نشان داد به طور عموم آتش‌سوزی بر ویژگی‌های بررسیشدة خاک سطحی بیشترین اثر و بر خاک زیرسطحی اثری میانه دارد. هدایت الکتریکی و TNV با بیشترین میزان در خاک سوخته تغییرات شایان توجه از خود نشان دادند. همچنین، میزان قابل دسترس نیتروژن، پتاسیم، فسفر، کلسیم، و منیزیم پس از آتش‌سوزی افزایش یافت؛ در حالی که CEC در خاک سوختهشده در مقایسه با خاک شاهد بدون تغییر باقی ماند. میزان pH و مقدار کربن و نیتروژن کل خاک نیز افزایش اندکی در خاک سوختهشده از خود نشان دادند. همچنین بافت خاک با نشان دادن میزان کمتر رس در خاک سوختهشده سبک شد. در مجموع، نتیجه گرفته شد که آتش‌سوزی بر ویژگی‌های فیزیکی و شیمیایی خاک اثر چشمگیری دارد و سبب کاهش کیفیت خاک اراضی جنگلی میشود. | ||
| کلیدواژه‌ها | ||
| آتش سوزی متوالی؛ خاک جنگلی؛ مریوان؛ ویژگی های فیزیکی و شیمیایی | ||
| عنوان مقاله [English] | ||
| Effect of Three Successive Years of Fire on Some Physicochemical Properties of a Forest Soil around Zarivar Lake in Marivan | ||
| نویسندگان [English] | ||
| Zahed Sharifi1؛ Chiako Nazari2؛ Kyumars Mohammadi Samani3؛ Naghi Shabanian4 | ||
| 1Assistant Professor, Department of Soil Science, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran | ||
| 2Graduate Student, Forestry, Department of Forestry, Faculty of Natural Resources, University of Kurdistan, Sanandaj | ||
| 3Assistant Professor, Department of Forestry and Center for Research and Development of Northern Zagros Forestry, Faculty of Natural Resources, University of Kurdistan | ||
| 4Associate Professor, Department of Forestry and Center for Research and Development of Northern Zagros Forestry, Faculty of Natural Resources, University of Kurdistan | ||
| چکیده [English] | ||
| The present study was conducted to investigate the effects of three successive years of fire burning on some physicochemical properties of surface (0-5 cm) and subsurface soil (5-10 cm) in Tappeh Darvish forest located in the surroundings of Zarivar Lake, Marivan. A control with similar conditions, but not affected by fire was selected in the vicinity of the fire burned area. Three composite soil samples were taken from the mentioned depths in the burned site and from control site. The samples were analyzed for texture, EC, pH, T.O.C, T.N, Nava. (NO3- and NH4+), Pava., Kava., Ca ava., Mg ava., Cation Exchangeable Capacity (CEC) and Total Neutralizing Value (TNV) contents using standard methods. The results showed that, in general, changes in the soil properties following fire were greatest at the subsurface soil and more modest at the subsurface soils. Soil TNV and EC content changed notably, following fire, with higher values in burned soils. Nitrogen, potassium, phosphorus, calcium and magnesium became more available following fire, while CEC levels were found to be unchanged in the burned soil in comparison with the unburned soil. Soil pH, total C and N content slightly increased in the burned soil. Furthermore, the soil texture became lighter following fire with a lower content of clay in the burned soils. In total, it was concluded that fire significantly affects soil physicochemical properties and reduces the quality of soil as in forestlands. | ||
| کلیدواژه‌ها [English] | ||
| Forest soil, Marivan, Soil physicochemical properties, Successive fire | ||
| مراجع | ||
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