بررسی ذخیرة کربن و تغییرات برخی از ویژگی‌های خاک در جنگل‌های زاگرس شمالی (مطالعة موردی: جنگل‌های سردشت و پیرانشهر)

نوع مقاله : مقاله پژوهشی

نویسندگان

1 بخش تحقیقات جنگل‌ها و مراتع، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان آذربایجان غربی، سازمان تحقیقات، آموزش و ترویج کشاورزی، ارومیه، ایران.

2 بخش تحقیقات جنگل‌ها و مراتع، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان چهارمحال و بختیاری، سازمان تحقیقات، آموزش و ترویج کشاورزی، شهرکرد، ایران.

3 بخش تحقیقات جنگل، مؤسسة تحقیقات جنگل‌ها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران.

10.22059/jfwp.2025.389326.1329

چکیده

پژوهش حاضر با هدف مطالعه، پایش و مقایسۀ ذخیرة کربن و برخی از خصوصیات خاک در دو تودۀ مختلف شاخه‌زاد (پردانان پیرانشهر) و دانه و شاخه‌زاد بلوط (دارساروین سردشت) در استان آذربایجان ‌غربی انجام شد. بدین‌منظور در هر یک از رویشگاه‌های انتخابی، یک قطعه‌نمونۀ مربعی یک هکتاری تعیین و مشخصه‌های کمی و کیفی تمام پایه‌ها به‌صورت صددرصد برداشت شد. برای اندازه‌گیری کربن آلی و سایر مشخصه‌های خاک، در هر رویشگاه، پنج نمونه خاک به‌طور منظم و از عمق 30-0 سانتی‌متری برداشت شد. جهت استخراج روند تغییر متغیرها و پایش آنها، اندازه‌گیری‌ها طی چهار سال از 1398 تا 1401 انجام گرفت. بررسی ذخیرة ‌کربن خاک در دو رویشگاه مورد بررسی نشان می‌دهد که رویشگاه پردانان (154/24تن در هکتار) اختلاف معنی‌داری با رویشگاه دارساروین (121/96تن درهکتار) دارد. میانگین درصد کربن آلی خاک در تودة پردانان 3/70 و در تودة دارساروین 2/91 به‌دست آمد. این اختلاف میان دو رویشگاه و همچنین در سال‌های مختلف پایش، در سطح احتمال 99 درصد معنی‌دار بود.  نیتروژن کل و فسفر قابل جذب خاک نیز اختلاف معنی‌دار در سطح احتمال 99 درصد بین دو توده‌‌ و در سال‌های مختلف نشان دادند. میزان رطوبت خاک در دو رویشگاه مورد بررسی در سطح احتمال 99 درصد اختلاف معنی‌دار نشان دادند ولی در سال‌های پایش تفاوت معنی‌داری نشان نداد. در یک نتیجه‌گیری کلی، نتایج در دو رویشگاه با تراکم و مبدأ متفاوت، بیانگر اختلاف در ذخیرة کربن و سایر ویژگی‌های خاک دارد که ناشی از تأثیر مدیریت توده و تخریب جنگل در دو توده می‌باشد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Investigation of the carbon storage and some soil characteristics in the northern Zagros forests (case study: Sardasht and Piranshahr forests)

نویسندگان [English]

  • Jalal Henareh 1
  • Yaghoub Iranmanesh 2
  • Mehdi Pourhashemi 3
1 Forests and Rangelands Research Department, West Azarbaijan Agricultural and Natural Resources Research and Education Center (AREEO), Urmia, Iran.
2 Forests and Rangelands Research Department, Chaharmahal and Bakhtiari Agricultural and Natural Resources Research and Education Center, AREEO, Shahrekord, Iran.
3 Forest Research Division, Research Institute of Forests and Rangelands, Agriculture, Research, Education and Extension Organization (AREEO), Tehran, Iran.
چکیده [English]

This study aimed to investigate, monitor, and compare carbon storage and selected soil characteristics in two different forest stands: a coppice stand in Pardanan (Piranshahr) and a coppice-with-standard oak stand in Darsarvin (Sardasht), West Azerbaijan Province. A square one-hectare sample plot was established in each site, and the quantitative and qualitative characteristics of all trees were fully recorded. To measure soil organic carbon and other properties, five soil samples were systematically collected from each site at a depth of 0–30 cm. Measurements were carried out over four years (2019–2022) to track trends in the variables. The results showed that soil carbon storage at the Pardanan site (154.24 tons per hectare) was significantly higher than at Darsarvin (121.96 tons per hectare). The average percentage of soil organic carbon was 3.70% in Pardanan and 2.91% in Darsarvin. This difference between sites, and across the monitoring years, was statistically significant at the 99% confidence level. Total nitrogen and available phosphorus also showed significant differences between the two stands and across the years at the same confidence level. Soil moisture differed significantly between the sites (99% level), though no significant variation was found over the years. Overall, the results indicate that differences in forest density and origin have led to notable variations in carbon storage and soil characteristics, reflecting the influence of forest management and degradation.

کلیدواژه‌ها [English]

  • Coppice
  • Monitoring
  • Stand management
  • West Azerbaijan
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