Fire effects on germination of soil seed bank in a semi-arid rangeland (a case study in Darehshahr, Ilam Province)
محل انتشار: مجله علوم زیستی خاورمیانه، دوره: 17، شماره: 4
سال انتشار: 1398
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 73
فایل این مقاله در 9 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_CJES-17-4_007
تاریخ نمایه سازی: 27 خرداد 1403
چکیده مقاله:
The size and longevity of soil seed bank in rangeland ecosystem change continuously due to natural and anthropogenic disturbances such as seed mortality, decomposition, consumption by seedivores, fire, and germination. This study aimed to examine the influence of human-induced fire on seeds germination rate in soil seed bank of a semi-arid rangeland. The study was carried out in Darehshahr, southeast of Ilam Province, western Iran in ۲۰۱۶ with two treatments, i.e. burned and unburned sites, in three replications. Soil samples was randomly taken at two different layers of ۰-۵ and ۵-۱۰ cm. Totally, ۳۰ soil samples were taken in each soil layers at each site. Soils were spread on ۱۵ × ۲۰ cm sterilized sand bed and germinated seed was monitored for ۳ months. Seedlings were counted every ۱۰ days and then removed from the trays. Diversity and richness of seedling were calculated using respective indices. The Repeated Measure Analysis of Variance was used to compare the diversity and richness of seedlings. The values of the Margalef and Menhinick richness indices in the burned site were ۳۱.۱۲ and ۲۵.۱۵% greater than that in unburned site. In addition, the values of the Simpson’s and also Shannon-Wiener diversity indices in the burned site were ۲۶.۶ and ۲۳.۲۷% greater than that in the unburned site, respectively.
کلیدواژه ها:
نویسندگان
Tahereh Radmard
Range and Watershed Management Department, Faculty of Soil and Water, University of Zabol, Zabol, Iran
Majid Ajorlo
Range and Watershed Management Department, Faculty of Soil and Water, University of Zabol, Zabol, Iran
Roholah Zeynivand
Range and Watershed Management Department, Faculty of Soil and Water, University of Zabol, Zabol, Iran
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :