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مقایسۀ توزیع بارش در تیپ‌های جنگلی بلوط، اوجا و انجیلی | ||
| اکوهیدرولوژی | ||
| مقاله 9، دوره 7، شماره 2، تیر 1399، صفحه 383-396 اصل مقاله (1.74 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ije.2020.299975.1310 | ||
| نویسندگان | ||
| سید حمیدرضا صادقی* 1؛ بهروز چوگان2؛ امیر سوادکوهی3؛ مرتضی اسماعیل‌زاده2؛ عاطفه جعفرپور4؛ مهین کله‌هوئی4 | ||
| 1استاد گروه مهندسی آبخیزداری، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس | ||
| 2دانشجوی دکترای عمران و بهره برداری جنگل، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس | ||
| 3دانشجوی دکترای عمران و بهره برداری جنگل، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس | ||
| 4دانشجوی دکترای علوم و مهندسی آبخیزداری، دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس | ||
| چکیده | ||
| در بومسازگانهای جنگلی، ویژگیهای پوشش گیاهی همراه با متغیرهای اقلیمی تأثیر زیادی بر توزیع اجزای بارش و چرخۀ آب میگذارد. از طرفی، چرخۀ آب کارکرد بسیار زیادی در روابط بین خاک، پوشش گیاهی و محیط در سطوح مختلف به عهده دارد. این چرخه یکی از پدیدههای مهم اکولوژیکی در جامعههای زیستی به‌خصوص در بومسازگان جنگلی است. پژوهش حاضر با هدف اندازهگیری مقادیر بارش، هدررفت ربایشی، میانگذر، ساقاب در تودههای بلوط، اوجا و انجیلی در محل دانشکدۀ منابع طبیعی دانشگاه تربیت مدرس شهرستان نور بهعنوان نمایندگان تودههای جنگلهای هیرکانی کشور انجام شده است. اندازهگیری اجزای بارش توسط 23 ظرف جمعآوریکننده طی دورۀ یک‌ساله از تاریخ 15/08/1397 تا 15/08/1398 با ثبت 34 رگبار انجام شد. نتایج نشان داد بیشترین میزان ساقاب بهترتیب در تیپ‌های بلوط، انجیلی و اوجا با مقدار 97/0، 56/0 و 34/0 درصد بود. بین ساقاب و بارندگی کل یک رابطۀ افزاینده و قوی در تیپ انجیلی (70/0R2=) بهدست آمد. بیشترین میزان هدررفت ربایشی بهترتیب در گونههای بلوط، اوجا و انجیلی با مقدار 19، 17 و 8 درصد بوده است. تحلیل رگرسیون بین میزان بارندگی کل و میانگین هدررفت ربایشی در گونۀ بلوط (61/0R2=) در اوجا (62/0R2=) و در گونۀ انجیلی (46/0R2=) مشاهده شد. نتیجۀ آزمون ANOVA نیز مؤید نبود اختلاف معنادار بین هدررفت ربایشی (790/0P=) و میانگذر (894/0P=) بین سه تیپ مطالعاتی بوده است. در حالی که اختلاف بین میزان رطوبت موجود در لاشبرگهای بلوط نسبت به دو تیپ اوجا و انجیلی (015/0=P) و همچنین، بین مقادیر ساقاب تیپ‌های بلوط و اوجا (009/0P=) معنادار بوده است. | ||
| کلیدواژه‌ها | ||
| اکوهیدرولوژی؛ چرخۀ آب؛ مدیریت جنگل؛ هدررفت ربایشی؛ هیدرولوژی جنگل | ||
| عنوان مقاله [English] | ||
| Comparison of Distribution of Precipitation in Quercus castanifolia, Ulmus glabra and Parotica percica Forest Types | ||
| نویسندگان [English] | ||
| Seyed Hamidreza Sadeghi1؛ Behroz Chogan2؛ Amir Savadkouhi3؛ Morteza Esmaeilzadeh2؛ Atefeh Jafarpoor4؛ Mahin Kalehhouei4 | ||
| 1Professor, Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, Iran | ||
| 2PhD Students of Forestry and Natural Resources Faculty of Tarbiat Modares University, Iran | ||
| 3PhD Students of Forestry and Natural Resources Faculty of Tarbiat Modares University, Iran | ||
| 4PhD Students in Watershed Science and Engineering Faculty of Natural Resources Tarbiat Modares University, Iran | ||
| چکیده [English] | ||
| In forest ecosystems, vegetation characteristics along with climatic parameters have a great influence on the distribution of precipitation components and water cycle. The present study was therefore conducted to measure the amounts of interception loss, throughfall and stemflow in Quercus castanifolia, Ulmus glabra and Parotica Percica at the campus of Faculty of Natural Resources of Tarbiat Modarres University, Noor, as representative of Hyrcanian forests of the country. Precipitation measurements were carried out by 23 collector containers over the course of a year from 06/10/2018 to 06/10/2019 with 34 storm events. The results showed that the rates of steamflow in Quercus, Parotica and Ulmus species were 0.97, 0.56 and 0.34%, respectively. There was a strong, positive and linear relationship between steamflow and precipitation in the Parotica type (R2 = 0.70). The interception losses were also 19, 17 and 8% in the Quercus, Ulmus and Parotica species, respectively. Regressions were also satisfactorily established between total precipitation and mean interception loss with coefficient of determination of 0.61, 0.62 and 0.46 for Quercus, Ulmus and Parotica stands, respectively. The results of ANOVA verified no significant difference between interception loss (P = 0.790) and throghfall values (P = 0.894) among the three study species. However, there was significant difference (p=0.015) between the moisture contents of litters in Quercus sp. compared to other two types of Ulmus sp. and Parotica sp. There was also a significant difference between the values of Quercus sp and Ulmus sp (P = 0.009). | ||
| کلیدواژه‌ها [English] | ||
| Ecohydrology, Forest Hydrology, Forest Management, Interception Loss, Water Cycle | ||
| مراجع | ||
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