| تعداد نشریات | 284 |
| تعداد نشریات سازمان | 82 |
| تعداد شماره‌ها | 3,077 |
| تعداد مقالات | 34,308 |
| تعداد مشاهده مقاله | 47,272,864 |
| تعداد دریافت فایل اصل مقاله | 78,223,747 |
تعیین همبستگی بارندگی با تولید علوفه سالانه مهمترین بوته‌ای‌های مرتعی منطقه فیروزکوه | ||
| تحقیقات مرتع و بیابان ایران | ||
| مقاله 6، دوره 25، شماره 1 - شماره پیاپی 70، فروردین 1397، صفحه 54-62 اصل مقاله (227.76 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/ijrdr.2018.116226 | ||
| نویسندگان | ||
| سیدتقی میرحاجی* 1؛ مرتضی اکبرزاده2؛ فرهاد آژیر3 | ||
| 1کارشناس ارشد بخش تحقیقات مرتع موسسه تحقیقات جنگلها و مراتع کشور | ||
| 2استادیار، بخش تحقیقات مرتع، مؤسسه تحقیقات جنگلها و مراتع کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، تهران، ایران | ||
| 3مربی پژوهشی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی استان مازندران، سازمان تحقیقات، آموزش و ترویج کشاورزی، ساری، ایران | ||
| چکیده | ||
| آگاهی از تولید سالانه و ماهانه تیپ‌های مختلف مرتعی برای مدیریت کارآمد و مؤثر مراتع ضروری است. دستیابی به این مهم با تعیین رابطه بین میزان تولید علوفه گیاهان و متغیرهای اقلیمی مؤثر بر آنها به‌ویژه بارندگی درعرصه مراتع آسان می‌گردد. مراتع فیروزکوه به منظور تعیین ارتباط بین بارندگی و میزان تولید علوفه گیاهان بوته‌ای، به‌مدت پنج سال(1389-1385) مورد مطالعه قرار گرفت. از ابتدای فصل رویش تولید علوفه گونه‌ها در داخل قطعات محصور با فواصل زمانی یک ماهه برداشت و هر ساله تا پایان فصل رویش ادامه یافت. هر یک از گونه‌های مورد بررسی در طول فصل چرا و در سال های مختلف، تولید معینی داشتند. رابطه میان تولید و بارندگی زمستانه، بهاره و ماه‌های مختلف زمستان و بهار به‌طور جداگانه بررسی گردید. نتایج نشان داد که همبستگی تولیدگونه‌های مورد مطالعه با بارش در دوره‌های زمانی مشتمل بر؛ سال زراعی(06/0-42/0)، زمستان و بهار(01/0-23/0)، اسفند و بهار (13/0-35/0)، اسفند و اردیبهشت (06/0-45/0)، بهمن تا خرداد (13/0-40/0) مثبت بوده و در ماه خرداد (63/0-94/0) به‌بالاترین میزان خود رسید، به‌طوری‌که بین تولید گونه‌های، Acanthophyllumspinosum، Acantholimonerinaceum، Onobrychiscornuta، Thymusfedtschenkoi، با بارندگی خرداد رابطه معنی‌دار در سطح یک‌تا پنج درصد مشاهده شد. | ||
| کلیدواژه‌ها | ||
| گیاهان بوته‌ای؛ تولید علوفه؛ فیروزکوه؛ لزور | ||
| عنوان مقاله [English] | ||
| Relationship between rainfall and annual forage production of the most important shrubs Species in Firuzkuh region | ||
| نویسندگان [English] | ||
| Seyed Taghi Mirhaji1؛ Morteza Akbarzadeh2؛ Farhad Azhir3 | ||
| 1Senior Research Expert, Range Research Division, Research Institute Forests and Rangelands, Tehran, Iran | ||
| 2Assistant Professor, Research Range Division, Research Institute of Forests and Rangelands, Agricultural Research, Education and Extension Organization (AREEO),Tehran, Iran | ||
| 3Research Instructor, Mazandaran Agricultural and Natural resources Research Education and Extension center, Sari, Iran | ||
| چکیده [English] | ||
| Awareness of annual and monthly production of various rangeland types is essential for efficient management of rangelands. It would be achievement by determining the relationship between plant forage production and climatic variables affecting them especially rainfall which would make easier management. Achieving this goal is facilitated by determining the relationship between the amount of forage production and climatic variables affecting it, especially rainfall, in rangelands. Firuzkuh rangelands were studied to determine the relationship between rainfall and shrub forage production during 2006-2010. For this purpose, the annual and monthly forage production was measured during plant growth season in research exclosure plots by clip and weigh method. Each plant species studied had a specific production during the grazing season in different years. Relationship between forage production and precipitation in periods of winter and spring as well as each month of winter and spring was estimated. Results showed that correlation between the forage production of study species and precipitation in different periods including crop year (0.06 - 0.42), winter and spring (0.01-0.23), March and spring (0.13 -0.35), March and May (0.06 – 0.45), February to June rainfall (0.13 – 0.40), was positive and reached its highest level in June (0.63 -0.94). A significant relationship was found between the forage production of Acantholimon erinaceum, Acanthophyllum spinosum, Astragalus gossypinus, Onobrychis cornuta and Thymus fedtschenkoi and June rainfall. | ||
| کلیدواژه‌ها [English] | ||
| Shrub, forage production, Firuzkuh, Lazur | ||
| مراجع | ||
|
-Abdollahi, J. and Arzani, H., 2011. The investigation of vegetation changes in relation to rainfall variation in Ebrahim abad steppe rangelands, Yazd province, Watershed Management Research, Pajouhesh & Sazandegi, 90:68-77. -Abdollahi, J., Arzani, H., Savaghebi, M. H., Azimi, M. and Naderi, H., 2012. The effect of precipitation fluctuations on canopy cover and range forage production in Yazd semi-steppe rangelands (Khud area 1378-1386), Iranian Journal of Rangeland and Desert Research, 19(1): 45-59. -Alizade, A., 2004. Relationship between Water Soil Plant, Emam Reza University, Mashhad, 470 p. -Baghestani Maybodi, N. and Zare, M. T., 2007. Investigation of relationship between annual precipitation and yield in steppic range of Poosht-kooh region of Yazd province, Iranian Journal of pajouhesh & Sazandegi, 75: 103-107. -Duncan, D. A. and Woodmansee, R. G., 1975. Forecasting forage yield from precipitation in California’s annual, Journal of Range Management, 28(4):327-329. -Ehsani, A., Arzani, H., Farahpoor, M., Ahmadi, H., Jafari, M., Jalili, A., Mirdavodi, H., Abbasi, H. and Azimi, M., 2007. The effect of climatic conditions on range forage production in steppe ranglands, Akhtarabad of Saveh, Iranian Journal of Rangeland and Desert Research, 14(2): 249-260. -Ehsani, A., Arzani, H., Farahpur, M., Ahmadi, H., Jafari, M. and Akbarzadeh, M., 2012. Evapotranspiration Estimation Using Climatic Data, Plant Characteristics and Cropwat 8.0 Software (Case Study: Steppic Region of Markazi Province, Roodshore Station). Iranian Journal of Rangeland and Desert Research, 19(1): 1-16. -Holechek, J. L., Pieper, R. D. and Herbal, C. H., 1995. Range management, principles and practices. Prentice Hall upper Saddle River, New Jersey, 526p. -Jabbogy, E. G. and Sala, O. E., 2002. Control of grass and shrub above ground production in Patagonian steppe. Ecological Applications, 10(2): 594-541. -Karabulut, M., 2003. An examination of relationship between vegetation and rainfall Using maximum value composite of AVHRR –NDVI data. Research Article, Turk Journal of Botany, 27:93-101. -Laidiaw, A. S., 2005. The effect of extremes in soil moisture content on perennial ryegrass growth International Grassland congress, Ireland United Kingdom. -Le Houerou, H. N., 1984. Rain use efficiency and unifying concept of arid land ecology. Journal of Arid Environment, 7: 213-247. -Miranda, J. D., Padilla, F. M. and Pugnaire, F. I., 2009. Response of a Mediterranean semi-arid community to changing patterns of water supply, Persp. Journal of Plant Ecology System, 11: 255- 266. -Munkhtsetseg, E., Kimura, R., Wang, J. and Shinoda, M., 2007. Pasture yield response to precipitation and high temperature in Mongolia, Journal of Arid Environment, 70:94-110. -Murphy, A. H., 1970. Predicted Forage yield based on fall precipitation in California annual grassland, Journal of Range Management, 23:363 -365. -Silver Town, J., Mike, E., McConway, K., Jacqueline, P. and crawley, M., 1994. Rainfall, Biomass variation and community composition in the park Grass Experiment, Journal of Ecology, 75(8): 2430-2437. -Silvertown, J., Wilson, J. B., 1994. Community Structure in a Desert Perennial Community, Journal of Ecology ecological society of America, 75(2): 409-417. -Smoliak, S., 1986. Influence of Climatic Conditions on production of Stipa Bouteloua prairie over a 50- year period. Journal of Range Management, 39(2): 100 -103. -Wylie, B. K., Pieper, R. D. and Southward, G. M., 1992. Estimating herbage standing crop from rainfall data in Niger, Journal of Range Management,45: 284-277. -Yang, Y., Fang, J., Ma, W. and Wang, W., 2008. Relationship between variability in aboveground net primary production and precipitation in global grasslands. Journal of Geophysical Research Letters, 10(4):237-351. -Zarekia, S., Zare, N., Ehsani, A., Jafari, F. and Yeganeh, H., 2012. Relationship between rainfall and annual forage production of important range species (Case study: Khoshkerood –Saveh). Iranian Journal of Rangeland and Desert Research, 19(4): 614-623. -Zhang, Y., Moran, M. S., Nearing, M., Ponce Campos, G. E., Huete, A, H., Buda, A. R., Bosch, D. D., Gunter, S. A. and Kitchen, S. G., 2013. Extreme precipitation patterns and reductions of terrestrial ecosystem production across biomes, Journal of Geophysical Research Biogeosciences, 118: 1-10.
| ||
|
آمار تعداد مشاهده مقاله: 453 تعداد دریافت فایل اصل مقاله: 359 |
||