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تغییرات الگوی ذخیره کربن در رابطه با تغییرات فیزیکی و شیمیایی خاک (مطالعه موردی: پارک جنگلی سوکان سمنان) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 7، دوره 25، شماره 2 - شماره پیاپی 68، تیر 1396، صفحه 244-253 اصل مقاله (387.03 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2017.111759 | ||
| نویسندگان | ||
| علیرضا مشکی* 1؛ الهام نوری2؛ ندا سلیماندهکردی3 | ||
| 1استادیار، گروه جنگلداری مناطق خشک، دانشکده کویرشناسی، دانشگاه سمنان، سمنان، ایران | ||
| 2دانشجوی دکتری بیابانزدایی، دانشکده کویرشناسی، دانشگاه سمنان، سمنان، ایران | ||
| 3کارشناس ارشد بیابانزدایی، دانشکده کویرشناسی، دانشگاه سمنان، سمنان، ایران | ||
| چکیده | ||
| این پژوهش بهمنظور مدلسازی تغییرات ذخیره کربن در ارتباط با ویژگیهای فیزیکی و شیمیایی خاک در تودههای درختی کاج تهران (Pinus eldarica Medw.) و اقاقیا (Robinia pseudoacacia L.) کاشتهشده بهصورت خالص و آمیخته در پارک جنگلی سوکان سمنان انجام شد. چهار تیمار خالص کاج تهران، خالص اقاقیا، آمیخته کاج تهران و اقاقیا و تیمار شاهد (منطقه بدون پوشش گیاهی) درنظر گرفته شدند. پس از نمونهبرداری از خاک در افقهای صفر تا 5، 10-5، 20-10 و 30-20 سانتیمتردر هر یک از این تیمارها، نمونههای خاک به آزمایشگاه منتقل و ویژگیهای فیزیکی و شیمیایی آنها اندازهگیری شدند. نتایج نشان داد که درخت کاج باعث کاهش اسیدیته خاک و افزایش مقدار پایداری خاکدانهها شده بود. اقاقیا باعث افزایش معنیدار مواد آلی، نیتروژن، پتاسیم و فسفر قابل جذب برای گیاهان شده بود. تیمار آمیخته بهطور عمده وضعیت بینابینی داشت. مقدار ترسیب کربن در تیمارهای خالص اقاقیا، خالص کاج تهران، آمیخته و شاهد بهترتیب 28/67، 18/74، 24/05 و 1/73 تن در هکتار بود. در مدلسازی مقدار ترسیب کربن در رابطه با ویژگیهای فیزیکی و شیمیایی خاک، نیتروژن و فسفر مهمترین عاملهای تأثیرگذار بر مقدار ترسیب کربن خاک تعیین شدند. بنابراین، افزایش نیتروژن خاک در این مناطق از طریق کاشت گونههای تثبیتکننده ازت میتواند نقش مهمی در افزایش موفقیت پروژههای جنگلکاری و ترسیب کربن داشته باشد. | ||
| کلیدواژهها | ||
| اقاقیا؛ ترسیب کربن؛ جنگلکاری؛ کاج تهران | ||
| عنوان مقاله [English] | ||
| The pattern of soil carbon sequestration changes regarding physico-chemical soil properties (Case study: Semnan Sokan forest park) | ||
| نویسندگان [English] | ||
| Aliraza Moshki1؛ Elham Nouri2؛ Neda Soleyman Dehkordi3 | ||
| 1Assistant Prof., Department of Forestry in Arid Regions, Faculty of Desert Studies, University of Semnan, Semnan, Iran | ||
| 2Ph.D. Student Desert Studies, Faculty of Desert Studies, University of Semnan, Semnan, Iran | ||
| 3M.Sc. Desert Studies, Faculty of Desert Studies, University of Semnan, Semnan, Iran | ||
| چکیده [English] | ||
| This study was carried out to model the soil carbon sequestration changes regarding to soil physical and chemical properties in pure and mixed stands of Eldar pine (Pinus eldarica Medw.) and black locust (Robinia pseudoacacia L.) planted in Semnan Sokan forest park. Four different treatments including pure Eldar pine, pure black locust, mixed of these species and control (without any plant cover) were considered. Soil samples were taken from different soil depth (0-5, 5-10, 10-20, and 20-30 cm) in the treatments and transported to laboratory for further analysis. The results showed that the Eldar pine trees decreased soil acidity and increased aggregates stability of soil. Black locust increased organic matter content, phosphorus, potassium, and nitrogen content of soil which can improve the quality of poor soils of this area. The mixed treatments affect soil properties partly between two above mentioned treatments. The carbon sequestration for Robinia, Pine, mixed and control treatments were 28.67, 18.74, 24.05 and 1.73 tons per hectare, respectively.The modeling of carbon sequestration with physical and chemical properties of soil, the nitrogen and phosphorus were determined as the most important effecting factors on the soil carbon sequestration. Therefore, increasing soil nitrogen in such regions via biological methods (planting nitrogen fixing plants) can play important role in success of afforestion and carbon sequestration projects in such regions. | ||
| کلیدواژهها [English] | ||
| afforestation, Carbon sequestration, PINUS ELDARICA, Robinia pseudoacacia | ||
| مراجع | ||
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