تأثیر درازمدت مالچ نفتی بر شاخص‌های تنوع زیستی ماکروفون خاک و پوشش گیاهی در منطقه جاسک | ||
| خشک بوم | ||
| مقاله 3، دوره 7، شماره 1، خرداد 1396، صفحه 27-38 اصل مقاله (400.62 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.29252/aridbiom.7.1.27 | ||
| نویسندگان | ||
| فرزانه جعفری1؛ داود کرتولی نژاد* 2؛ مجتبی امیری2؛ معصومه شایان مهر3؛ محمد اکبریان4 | ||
| 1دانشجوی کارشناسی ارشد رشته بیابان‌زدایی، دانشگاه سمنان | ||
| 2استادیار گروه جنگلداری دانشکده کویرشناسی دانشگاه سمنان، دانشکده کویرشناسی دانشگاه سمنان | ||
| 3استادیار گروه گیاه‌پزشکی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، مازندران | ||
| 4استادیار جغرافیای طبیعی، دانشگاه هرمزگان | ||
| چکیده | ||
| بخش وسیعی از کشور ایران در ناحیه خشک و نیمه‌خشک قرار دارد؛ از این نظر استان های متعددی در معرض هجوم ماسه های روان به هنگام وزش بادهای دائمی و فصلی هستند. یکی از روش های تثبیت ماسه های روان استفاده از مالچ نفتی است. در این پژوهش، تأثیر مالچ نفتی بر شاخص‌های تنوع، غنا و یکنواختی ماکروفون خاک و پوشش گیاهی در شهرستان جاسک استان هرمزگان مطالعه شد. داده‌های تحقیق شامل تراکم، تاج پوشش و غنای پوشش گیاهی و غنا و تنوع ماکروفون خاک است. پوشش گیاهی با استفاده از 60 پلات 5×5 مترمربعی و ماکروفون خاک نیز 80 تله گودالی (شیشه های حاوی پلی‌اتیلن گلایکول 50%) نمونه برداری شد. شاخص های غنا و تنوع زیستی نیز با استفاده از نرم افزار Past محاسبه شد. نتایج مقایسه شاخص های تنوع ماکروفون خاک نشان داد که غنای منطقه مالچ پاشی شده در دو فصل پاییز و بهار به ترتیب 9/2 و 5/16 برابر منطقه شاهد است. شاخص تنوع شانون و سیمپسون در منطقه مالچ پاشی شده نیز در فصل پاییز، به ترتیب 6/3 و 1/3 برابر منطقه شاهد بود. شاخص های تنوع منطقه مالچ پاشی شده در فصل بهار 15 برابر منطقه شاهد بود که بیانگر بیشتر بودن گونه های نادر ماکروفون خاک منطقه مالچ پاشی شده نسبت به منطقه شاهد است. نتایج تأثیر مالچ نفتی بر شاخص های غنا و تنوع زیستی پوشش گیاهی در دو منطقه مالچ پاشی شده و شاهد نیز بیانگر یکسان بودن تنوع پوشش گیاهی پس از گذشت 10 تا 14 سال از زمان مالچ پاشی در مناطق مورد مطالعه است. | ||
| کلیدواژه‌ها | ||
| تعداد گونه؛ تنوع؛ شاخص یکنواختی؛ ماکروفون خاک؛ مالچ نفتی | ||
| عنوان مقاله [English] | ||
| Long term effect of oil mulch on richness and biodiversity of soil macro-fauna and vegetation in Jask, Iran | ||
| نویسندگان [English] | ||
| F. Jafari1؛ D. Kartoolinejad2؛ M. Amiri2؛ M. Shayanmehr3؛ M. Akbarian4 | ||
| 1Department of Arid Land Forestry, Faculty of Desert Studies, Semnan University | ||
| 2Department of Arid Land Forestry, Faculty of Desert Studies, Semnan University | ||
| 3Department of Plant Protection, Faculty of Crop Sciences, Sari University of Agricultural Sciences and Natural Resources | ||
| 4Assistant professor of Physical Geography, University of Hormozgan | ||
| چکیده [English] | ||
| Several provinces in Iran are subjected to the invasion of moving sands during permanent and seasonal wind blowing. In this research, effect of oil mulch on biodiversity, richness and evenness indices of soil macrofauna and vegetation has been investigated in Jask region. The research data were including density, canopy and richness of vegetation and the richness and biodiversity of soil macrofauna. Vegetation was sampled using 60 plots with the area of 5Í5 m2 and soil macrofuana investigated using 80 pit traps (glasses containing poly ethylene glycol 50%). Richness and biodiversity indices were calculated using Past software. Results of compared biodiversity indices for macrofauna showed that richness of soil macrofauna of mulched areas in autumn and spring, were 2.9 and 16.5 times than the control area, respectively. Shannon’s and Simpson’s biodiversity indices related to autumn were 3.6 and 3.1 times than the control area in mulched areas, respectively. Results of oil mulch effect on richness and biodiversity of vegetation in mulched and control areas indicating similar plant diversity after 10 to 14 years than the mulching process in the studied areas. | ||
| کلیدواژه‌ها [English] | ||
| Number of taxa, Diversity, Evenness index, Soil macrofauna, Oil mulch | ||
| مراجع | ||
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