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ارزیابی پتانسیل گونه‌هایAgropyron intermedium (Host) P. Beauv. و Dactylis glomerata L. در گیاهپالایی خاک آلوده به نفت خام سبک در شرایط گلخانهای | ||
| نشریه علمی - پژوهشی مرتع و آبخیزداری | ||
| مقاله 5، دوره 70، شماره 2، مرداد 1396، صفحه 315-331 اصل مقاله (1.04 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jrwm.2017.218659.1065 | ||
| نویسندگان | ||
| جواد دائی زاده* 1؛ مهشید سوری2؛ احسان زند اصفهانی3؛ جواد معتمدی4 | ||
| 1دانش آموختۀ کارشناسی ارشد مرتع داری، دانشکدۀ منابع طبیعی، دانشگاه ارومیه، ایران. | ||
| 2استادیار پژوهشی، بخش تحقیقات مرتع، موسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران | ||
| 3استادیار پژوهشی، بخش تحقیقات مرتع، مؤسسۀ تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران. | ||
| 4دانشیار پژوهشی، بخش تحقیقات مرتع، موسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران | ||
| چکیده | ||
| هیدروکربنهای نفتی از جمله آلایندههای پایدار سمی بوده که تهدیدی اساسی برای اکوسیستم بهشمار میرود. گیاهپالایی، شامل استفاده از گیاهان برای پاکسازی خاکهای آلوده، یک روش مؤثر و اقتصادی در کاهش آلودگیهای نفتی خاک است. در این پژوهش پتانسیل گیاهپالایی گیاهان مرتعی Agropyron intermedium و Dactylis glomerata بر خاک آلوده با غلظتهای مختلف نفت خام (20، 30، 40 و 50 درصد) برای مدت 120 روز در شرایط گلخانهای مورد بررسی قرار گرفت. در انتهای تحقیق، تغییرات فاکتورهای زیستی (ارتفاع اندامهوایی، وزن خشک اندامهوایی و وزن خشک ریشه) هر کدام از گونهها و تغییرات هیدروکربنهای نفتی خاک اندازهگیری گردید و نتایج با استفاده از نرمافزار SPSS تجزیه و تحلیل شد. روند منحنی سینتیک زوال درصد ترکیبات نفتی برای محاسبۀ مدت زمان لازم برای تجزیۀ هیدروکربنهای نفتی، ارزیابی گردید. نتایج نشان داد سه شاخصۀ مهم فاکتورهای زیستی هر دو گونه در تیمارهای مختلف، تفاوت معنیداری با تیمار شاهد داشتند. آنالیز حاصل از تغییرات درصد ترکیبات نفتی نشان داد، گیاه Ag.intermedium با کاهش 81/79 درصد مواد نفتی در تیمار 20 درصد و 54/58 درصد کاهش در تیمار 50 درصد، توانایی بهتری نسبت به گیاه D.glomerataدر گیاهپالایی خاکهای آلوده به مواد نفتی را دارد. نتایج حاصل از آنالیز درصد ترکیبات نفتی نمونههای خاک و برازش آن با سه مدل سینتیک درجۀ صفر، سینتیک درجۀ اول و مدل هیگوچی، در هر دو گونه نشان داد که مدل سینتیک درجۀ اول مناسبترین مدل برای شبیهسازی روند تغییرات مقادیر هیدروکربنهای نفتی خاک میباشد. | ||
| کلیدواژه‌ها | ||
| گیاهپالایی؛ گیاهان مرتعی؛ نفت خام سبک؛ Agropyron intermedium؛ Dactylis glomerata | ||
| عنوان مقاله [English] | ||
| Evaluate the potential of Agropyron intermedium (Host) P. Beauv. and Dactylis glomerata L. species in phytoremediation of soil contaminated with crude oil in terms of greenhouse | ||
| نویسندگان [English] | ||
| Javad Daeizadeh1؛ MAHSHID souri2؛ Ehsan Zandi Isfahan3؛ javad motamedi4 | ||
| 1Forest, Range and Watershad Management Organization | ||
| 2Assistant Professor, Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran | ||
| 3Assistant Professor, Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran. | ||
| 4Professor associated, Rangeland Research Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO), Tehran, Iran | ||
| چکیده [English] | ||
| Total Petroleum Hydrocarbons are toxic and persistent pollutants that are considered as fundamental threat to the ecosystem. Phytoremediation, the use of plants for remediation of contaminated soils, is an effective and affordable way to reduce soil pollution. In this study, the potential phytoremediation of pasture plants i.e. Agropyron intermedium and Dactylisglomerata in soil contaminated with crude oil of different concentrations (20, 30, 40 and 50 percent) was scrutinized for 120 days under greenhouse condition. At the end of the study, changes in biological factors (shoot height, shoot dry weight and root dry weight) of each species and changes in petroleum hydrocarbons of soil were measured and results were analyzed using SPSS software. The process of decay kinetics curve of petroleum percent was used to calculate the time it takes for decomposition of petroleum hydrocarbons. Results showed that three main features of biological factors of both studied species in different treatments were significantly different compared to control group. Analysis of changes in petroleum hydrocarbons indicated that Agropyronintermedium reduced 79.81 percent of oil in the treatment of 20% and reduced 58.54 percent of oil in the treatment of 50%. Therefore, it has higher phytoremediation ability in comparison with Dactylisglomerata. The results of the analysis of petroleum in soil samples, fitted with zero-order kinetic model showed that the first order kinetic model is the best model for simulating the trend of changes of Petroleum hydrocarbon of the soil | ||
| کلیدواژه‌ها [English] | ||
| Phytoremediation, Rangeland plants, Crude Oil, Agropyron intermedium, Dactylis glomerata | ||
| مراجع | ||
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