| تعداد نشریات | 286 |
| تعداد نشریات سازمان | 84 |
| تعداد شماره‌ها | 2,997 |
| تعداد مقالات | 33,571 |
| تعداد مشاهده مقاله | 44,201,204 |
| تعداد دریافت فایل اصل مقاله | 20,558,304 |
تأثیر اجرای شیوه تک‌گزینی بر تنوع گونه‌های علفی در جنگل آمیخته راش (مطالعه موردی: ناو اسالم، گیلان) | ||
| تحقیقات جنگل و صنوبر ایران | ||
| مقاله 2، دوره 23، شماره 4، دی 1394، صفحه 583-593 اصل مقاله (361.13 K) | ||
| نوع مقاله: علمی- پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijfpr.2015.106580 | ||
| نویسندگان | ||
| زهرا مرادی* 1؛ حسن پوربابایی2؛ علی صالحی3؛ علیرضا صیادی4 | ||
| 1کارشناس ارشد جنگل‌شناسی و اکولوژی جنگل، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 2استاد، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 3دانشیار، دانشکده منابع طبیعی، دانشگاه گیلان | ||
| 4کارشناس ارشد جنگل‌داری، اداره منابع طبیعی و آبخیزداری تالش | ||
| چکیده | ||
| تغییرات پوشش گیاهی جنگل تحت تأثیر عامل‌های متعددی قرار دارد که یکی از مهمترین و تأثیرگذارترین آنها تاج‌پوشش درختان است. پژوهش پیش‌رو با هدف بررسی تأثیر تاج‌پوشش باز و بسته درختان بر تنوع گونه‌های علفی در جنگل‌های ناو اسالم انجام شد. سه اندازه روشنه کوچک (100 تا 200 مترمربع)، متوسط (200 تا 300 مترمربع) و بزرگ (300 تا 400 مترمربع) هر کدام با پنج تکرار انتخاب شد. سطوح شاهدی نیز با همین اندازه زیر تاج‌پوشش بسته درنظر گرفته شد. در طول دو قطر اصلی روشنه، زیرقطعه‌نمونه‌های 2×2 متر با فاصله یک متر به روش تصادفی منظم پیاده شد و درصد پوشش گونه‌های گیاهی در آنها براساس مقیاس دومین برآورد شد. به‌منظور ارزیابی تنوع گیاهی در قطعات نمونه از شاخص‌های تنوع سیمپسون و شانون- وینر، یکنواختی اسمیت- ویلسون و شمارش گونه‌های علفی (غنا) استفاده شد. نتایج نشان داد که با افزایش مساحت روشنه، مقادیر شاخص‌های تنوع گونه‌ای و غنا افزایش معنی‌داری پیدا می‌کنند. مقایسه شاخص‌ها بین سطوح مختلف روشنه و جنگل شاهد تنها درمورد شاخص‌های تنوع گونه‌ای و غنا در روشنه کوچک و جنگل شاهد معنی‌داری نبود. | ||
| کلیدواژه‌ها | ||
| تاج‌پوشش جنگل؛ روشنه؛ شاخص‌های تنوع؛ ناو اسالم | ||
| عنوان مقاله [English] | ||
| The effect of single tree selection cutting on herbaceous diversity in mixed oriental beech forest (Case study: Nav-e Asalem, Guilan) | ||
| نویسندگان [English] | ||
| Zahra Moradi1؛ Hasan Pourbabaei2؛ Ali Salehi3؛ Alireza Sayyadi4 | ||
| 1M.Sc. Silviculture and Forest Ecology, Factually of Natural Resources, University of Guilan | ||
| 2Prof., Faculty of Natural Resources, University of Guilan | ||
| 3Associate Prof., Faculty of Natural Resources, University of Guilan | ||
| 4M.Sc. Forestry, Natural Resources and Watershed Management Office of Talesh | ||
| چکیده [English] | ||
| Variations in forest vegetation are effected by several factors, one of the most important of which being the crown canopy. This study aims to survey the effect of close and open crown canopy on the herbaceous diversity in Nav-e Asalem forests in Guilan province. To this aim, 15 canopy gaps of small (100-200 m2), medium (200-300 m2) and large (300-400 m2) sizes were selected with 5 replications each. Moreover, control plots of the same sizes were selected under the tree canopy. Along small and large diagonals in each gap microplots of 2×2 m each were measured in a randomized systematic design. The percentage of herbaceous cover was estimated using Domin scale. To assess plant diversity in each plot, diversity indices of Simpson, Shannon-Wiener, Smith-Wilson Evenness Index and herbaceous richness were derived. Results showed that increasing the gaps area resulted in a significant increase of diversity and richness. Furthermore, no significant difference was observed between diversity and richness indices between small area gaps and control areas. | ||
| کلیدواژه‌ها [English] | ||
| Forest canopy, Gap, diversity indices, Nav-e Asalem | ||
| مراجع | ||
|
- Abrari Vajari, K., Jalilvand, H., Pourmajidian, M.R., Espahbodi, K. and Moshki, A., 2011. The effect of single-tree selection system on soil properties in an oriental beech stand of Hyrcanian forest, north of Iran. Journal of Forestry Research, 22(4): 591-596. - Abrari Vajari, K., Jalilvand, H., Pourmajidian, M.R., Espahbodi, K. and Moshki, A., 2012. Effect of canopy gap size and ecological factors on species diversity and beech seedlings in managed beech stands in Hyrcanian forests. Journal of Forestry Research, 23(2): 217-222. - Akbarinia, M.S., Jalali, Gh. and Aliarab, A., 2011. Effect of forest gaps size on biodiversity of plant species in Querco-Carpinetum stands in Khanikan forest, Chalous. Iranian Journal of Biology, 24(4): 593-604 (In Persian). - Akbarinia, M., Shabani, S., Jalali, Gh. and Aliarab, A., 2009. The effect of forest gaps size on biodiversity of plant species in Lalis forest-Nowshahr. Iranian Journal of Forest, 1(2): 125-135 (In Persian). - Anonymous, 2008. Forest Management Plan, Series II Nav-e Asalem. Administration of Natural Resource at Guilan Province, 703p (In Persian). - Battaglia, L.L., Sharitz, R.R. and Minchin, P.R., 1999. Patterns of seedling and overstory composition along a gradient of hurricane disturbance in an old-growth bottomland hardwood community. Canadian Journal of Forest Research, 29(1): 144-156. - Berg, E.C. and VanLear, D.H., 2004. Yellow-poplar and oak seedling density responses to wind-generated gaps. Proceeding of the 12th Biennial Southern Silvicultural Research Conference, Biloxi, Mississippi, 24-28 Feb. 2003: 594p. - Collins, B.S. and Picket, S.T.A., 1988. Demographic responses of herb layer species to experimental canopy gaps in a northern hardwoods forest. Journal of Ecology, 76(2): 437-450. - Crow, T.R., Buckly, D.S., Nauertz, E. and Zasada, J.C., 2002. Effects of Management on the composition and structure of northern hardwood forests in upper Michigan. Forest Science, 48(1): 129-145. - Dastanpour, M., Kazemnezhad, F., Shekholeslami, A., Poor Mohammad, A. and Habibi, S., 2011. Investigation the vegetation biodiversity in the managed and unmanaged heaps of parrotio-carpintum in the north of Iran (Case study: Series 5 Behsara). Journal of Biology Science, 5(4): 169-177 (In Persian). - Ellenberg, H. and Leuschner, C., 1996. Vegetation Mitteleuropas mit den Alpen. 6. Auflage. Verlag Eugen Ulmer, Stuttgart, 1334p. - Falk, K. J., Burke, D.M., Elliott, K.A. and Holmes, S.B., 2008. Effects of single-tree and group selection harvesting on the diversity and abundance of spring forest herbs in deciduous forests in southwestern Ontario. Forest Ecology and Management, 255(7): 2486-2494. - Fallahchai, M.M., 2011. Study of single selection method with administering on tree species diversity in Siyahkal Shenroud forests. Journal of Science and Technology in Natural Resources, 6(2): 41-54 (In Persian). - Felton, A.M., Wood, J. and Lindenmayer, D.B., 2006. Vegetation structure, phenology, and regeneration in the natural and anthropogenic tree-fall gaps of a reduced-impact logged subtropical Bolivian forest. Forest Ecology and Management, 235(1-3): 186-193. - Godefroid, S., Phartyal, S.S., Weyembergh, G. and Koedam, N., 2005. Ecological factors controlling the abundance of non-native invasive black cherry (Prunus serotina) in deciduous forest understory in Belgium. Forest Ecology and Management, 210(1-3): 91-105. - Goldblum, D., 1997. The effects of treefall gaps on understorey vegetation in New York State. Journal of Vegetation Science, 8(1): 125-132. - Goleij, A., Jalilvand, H., Pormajidian, M.R., Tabari, M. and Mohammadi Samani, K., 2006. A quantitative investigation of natural regeneration in the gaps derived from the first selective cut in Meskeli buxus hyrcana stand. Journal of Science and Technology of Agriculture and Natural Resources, Water and Soil Science, 11(41): 465-473 (In Persian). - Haddadi Moghaddam, H., 2007. Investigation of gap size effect derived from selective cutting on plant species diversity and composition of Ramsar Safaroud beech forests. M. Sc. Thesis, Faculty of Natural Resources, University of Guilan, Sowme`eh Sara, 77p (In Persian). - Haghverdi, K., Kiadaliri, H., Sagheb-Talebi, Kh. and Hosseini, M., 2012. Impact of Relative Light Intensity on ground flora in dead-tree gaps of beech stands (Case study: Reserve Parcel of Langa-Kelardasht). Journal of Science and Technology in Natural Resources, 7(1): 15-26 (In Persian). - Kern, C.C., Palik, B.J. and Strong T.F., 2006. Ground-layer plant community responses to even-age and uneven-age silvicultural treatments in Wisconnsin northern hardwood forest. Forest Ecology and Management, 230(1-3): 162-170. - Klinka, K., Scagel, A.M. and Courtin, P.J., 1985. Vegetation relationships among some seral ecosystems in southwestern British Columbia. Canadian Journal of Forest Research, 15(3): 561-569. - Krebs, C.J., 1998. Ecological Methodology. 2th edition, Published by Benjamin Cummings, 624p. - Lertzman, K.P., 1992. Patterns of gap-phase replacement in a subalpine, old-growth forest. Ecology, 73(2): 657-669. - Maguran, A.E., 1988. Ecological Diversity and Its Measurement. Princeton University Press, 179p. - Mahmoudi, J., 2008. The study of species diversity in plant ecological groups in Kelarabad protected forest. Iranian Journal of Biology, 20(4): 353-362 (In Persian). - Moore, M.R. and Vankat J.L., 1986. Responses of the herb layer to the gap dynamics of a mature beech-maple forest. American Midland Naturalist, 115(2): 336-347. - Mosavi, S.R., 2000. Investigation on regeneration gaps silviculture in Shorab Golband. M. Sc. Thesis, Faculty of Natural Resources, University of Tarbiat Modares, Noor, 110p (In Persian). - Naaf, T. and Wulf, M., 2007. Effects of gap size, light and herbivory on the herb layer vegetation in European beech forest gaps. Forest Ecology and management, 244(1-3): 141-149. - Nobakht, M., Pourbabaei, H., Beygom Faghir, M. and Abedi, R., 2010. Variations of diversity indices and Species Importance Value (SIV) of plant species in the Dr. Dorostkar's Forest Reservoir Area, Gisum, Talesh. Journal of Natural Environment, 63(4): 389-398 (In Persian). - Ohsawa, M. Nagaike, T., 2006. Influence of forest types and effects of forestry activities on species richness and composition of Chrysomelidae in the central mountainous region of Japan. Biodiversity and Conservation, 15(4): 1179-1191. - Paritsis, J. and Aizen, M.A., 2008. Effects of exotic conifer plantations on the biodiversity of understory plants, epigeal beetlets and birds in Notofagus dombeyi forests. Forest Ecology and Management, 255(5-6): 1575-1583. - Pourbabaei, H. and Dado K.H., 2006. Species diversity of woody plants in the district 1, Kelardasht forest, Mazandaran province. Iranian Journal of Biology, 18(4): 307-322 (In Persian). - Pourbabaei, H., Haddadi Moghaddam, H. and Begyom Faghir, M., 2013. The influence of gap size on plant species diversity and composition in beech (Fagus orientalis) forest, Ramsar, Mazandaran province, North of Iran. Journal of Biodiversity, 14(2): 89-94 (In Persian). - Prescott, C.E., 2002. The influence of the forest Canopy on nutrient cycling. Tree Physiology, 22(15-16): 1193-1200. - Pyke, D.A. and Zamora, B.A., 1982. Relationships between overstory structure and understory production in the grand fir myrtle boxwood habitat type of Northcentral Idaho. Journal of Range Management, 35(6):769-773. - Runkle, J.R., 1985. Disturbance regimes in temperate forests in the ecology of natural disturbance and patch dynamics. Academic Press, Sandiego, Calif: 17-33. - Schumann, M.E., White, A.S. and Withman, J.W., 2003. The effect of harvest-created gaps on plant species diversity, composition, and abundance in a main oak-pine forest. Forest Ecology and Management, 176(1): 543-561. - Shabani, S., 2009. Relationship of forest gaps size with physiographic factor and vegetation in Lalis forest, Nowshahr. M. Sc. Thesis, Faculty of Natural Resources, University of Tarbiat Modares, Noor, 88p (In Persian). - Tavankar, F., Mahmoudi, J. and Iranparast Bodaghi, A., 2011. The effect of single selection method on tree species diversity in the northern forest of Iran (Case study: Asalem-Nav, Guilan province). Journal of Sciences and Techniques in Natural Resources, 6(1): 27-40 (In Persian). - Zhang, Q. and Liang, Y., 1995. Effects of gap size on nutrient release from plant litter decomposition in a natural forest ecosystem. Canadian Journal of Forest Research, 25(10): 1627-1638.
| ||
|
آمار تعداد مشاهده مقاله: 1,567 تعداد دریافت فایل اصل مقاله: 842 |
||