پیوندهای مفید
اخبار و اعلانات
آمار
| تعداد نشریات | 25 |
| تعداد شماره‌ها | 956 |
| تعداد مقالات | 7,836 |
| تعداد مشاهده مقاله | 13,201,800 |
| تعداد دریافت فایل اصل مقاله | 9,330,350 |
بررسی روش‌های نمونه برداری فاصله‌ای در برآورد مشخصه‌های کمی جنگل | ||
| زیست شناسی کاربردی | ||
| مقاله 3، دوره 34، شماره 3 - شماره پیاپی 69، آبان 1400، صفحه 41-57 اصل مقاله (553.2 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22051/jab.2021.34791.1402 | ||
| نویسندگان | ||
| رضاحسین حیدری* 1؛ کوثر خالتی2؛ نسیم سلیمی خواه2 | ||
| 1استادیار، گروه منابع طبیعی، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران | ||
| 2کارشناس ارشد، گروه منابع طبیعی، دانشکده کشاورزی، دانشگاه رازی، کرمانشاه، ایران | ||
| چکیده | ||
| آگاهی از وضعیت تراکم و تاج‌پوشش درختان جنگل‌های زاگرس برای حفظ، احیا و گسترش آنها اهمیت دارد. هدف این بررسی معرفی مناسب ترین برآوردکننده روش‌های نمونه برداری فاصله‌ای برای برآورد مشخصه های کمی این جنگل‌ها است. برای این منظور درختان و دو قطر بزرگ و کوچک تاج آنها در33 قطعه نمونه دایره‌ای شکل برداشت گردید. در هر قطعه نمونه دایره‌ای روش‌های نمونه برداری فاصله‌ای نزدیکترین فرد، نزدیکترین همسایه، دومین نزدیکترین همسایه، ترکیبی، مربع تی، نقطه مشترک و مربعی با نقطه مرکزی برداشت گردیدند. بعد تراکم و تاج پوشش درختان با روش دایره‌ای و برآوردکننده‌های روش‌های نمونه برداری فاصله‌ای محاسبه گردید، با استفاده از معیار صحت نتایج برآوردکننده‌های فاصله‌ای با نتایج قطعه نمونه دایره‌ای شکل مقایسه گردیدند. نتایج نشان داد که براساس صحت قابل قبول (دامنه10±درصد)، از بین 16 برآوردکننده روش‌های مذکور، مناسب‌ترین آنها برای برآورد تراکم و تاج پوشش درختان این جنگل‌ها، برآوردکننده PCQ3 بود. | ||
| کلیدواژه‌ها | ||
| تاج‌پوشش؛ تراکم؛ صحت؛ کرمانشاه؛ مقدار واقعی | ||
| عنوان مقاله [English] | ||
| Study of Distance Sampling Methods for Estimating Quantitative Characteristics of Forest | ||
| نویسندگان [English] | ||
| Reza Hossein Haidari1؛ Kosar Khaleti2؛ Nasim Salimikhah2 | ||
| 1Assistant Professor, Department of Natural Resources, Faculty of Agriculture, Razi University, Kermanshah, Iran | ||
| 2M.Sc., Department of Natural Resources, Faculty of Agriculture, Razi University, Kermanshah, Iran | ||
| چکیده [English] | ||
| Awareness of the density and canopy cover of Zagros forests is important for their preservation, restoration and expansion. The purpose of this study was to introduce the most appropriate estimator of distance sampling methods for estimating quantitative characteristics of these forests. For this purpose, trees and their two large and small crown diameters in 33 circular sample plots in Kermanshah province inventoried. Within each circular plots, seven distance sampling methods such as Nearest individual, Nearest neighbor, second nearest neighbor, Compound, T-square, Joint-point method and Point-centered quarter were sampled. After calculating the density and canopy cover of trees in circular method (true value) and distance sampling method estimators, the results of this estimators were compared with circular plots with using accuracy. The results showed that among 16 estimators of above distance sampling methods, the most suitable estimator for density and canopy cover of this forest was PCQ3 estimator. | ||
| کلیدواژه‌ها [English] | ||
| Accuracy, canopy cover, density, Kermanshah, true density | ||
| مراجع | ||
|
Askari, Y., Kafassh Saei, E., & Rezaei, D. )2013(. Evaluation of different sampling methods to study of shrub density in Zagros forest. European Journal of Experimental Biology, 3(2), 121-128. Badehian, Z., Mansouri, M. & Sanjabi, H. (2017). Economic valuation of some of the most important functions and services of Quercus forests in the centeral Zagros (Case study: Lorestan province). J.Env. Sci. Tech., 19(5):353-363. Basiri, R., Moradi, M., Kiani, B., & Maasumi Babaarabi, M. )2018(. Evaluation of distance methods for estimating population density in Populus euphratica Olivier natural stands (case study: Maroon riparian forests, Iran). Journal Of Forest Science, 64 (5), 230–244. Bazrafkan, A., Bavaghar, M.P., & Fathi, P. (2014). Capability of Liss III data for forest canopy density mapping in Zagros forests (Case study: Marivan Forests). Iranian Journal of Forest, 6(4), 387-401. Borges Silva, L., Mário, A., Rui Bento, E., & Silva, L. )2017(. Comparison of 𝑇-Square, point centered Quarter, and 𝑁-Tree sampling methods in Pittosporum undulatum Invaded woodlands. International Journal of Forestry Research, 28(13), 1-15. Bryant, D.M., Ducey, M.J., Innes, J.C., Lee, T.D., Eckert, R.T., & Zarin, D.J. (2004). Forest community analysis and the point-centered quarter method. Plant Ecology, 175(2), 193-203. Byth K. (1982): On robust distance-based intensity estimators. Biometrics, 38: 127–135. Byth K., Ripley B.D. (1980): On sampling spatial patterns by distance methods. Biometrics, 36: 279–284. Cottam G., Curtis J.T. (1956): The use of distance measures in phytosociological sampling. Ecology, 37: 451–460. Dehshiri, M.M., (2019). Study on the plant species diversity along an altitudinal gradient in Nova Mountain, Kermanshah Province of Iran. Journal of Applied Biology, 33(1):61-77. Diggle P.J. (1975): Robust density estimation using distance methods. Biometrika, 62: 39–48. Engeman R.M., Sugihara R.T., Pank L.F., Dusenberry W.E. (1994): A Comparison of plotless density estimators using Monte Carlo simulation. Ecology, 75: 1769–1779. J. FOR. SCI., 64, 2018 (5): 230–244 243 F.R.W.M.O. (2021). Forests, Range and Watershed Management Organization. https://frw.ir/ Haidari, R.H. (2020). Presentation a new Joint-point Sampling method estimator for tree density. Journal of Forest Research and Development. 6(3):505-517. Haidari R.H., Zobeiri M., Namiranian M., Sobhani H. ( 2007) Application of T-square sampling method in Zagross forests (Case Study: Kerman-shah province) - Iran. J. For. Poplar Res. 15: 32-42. Haidari, R.H., Zobeiri, M., Namiranian, M., & Sobhani, H. (2008). Application of T-square sampling method in Zagross forests (Case Study: Kermanshah province). Iranian Journal of Forest and Poplar Research, 15(1), 32-42. Haidari, R.H., Sohrabi Zadeh A. and Haidari, M. (2019). Effect of Physiographic Factors on Plant Biodiversity in the Central Zagros Forests (Case Study: Educational Forest of Razi University of Kermanshah). Ecology of Iranian Forests. 7(1):66-75. Karamshahi, A., Zobeiri, M., Namiranian, M., & Feghhi, J. (2012). Investigation on application of k-nn (k-nearest neighbor) sampling method in Zagros forests (Case study: Karzan forest, Ilam). Iranian Journal of Forest and Poplar Research, 19(4), 453-465. Khaleti,K. (2019). Comparison of quantitative characteristics of Sorkhe-dizeh forest in beginning and end of 13 Years period with plot-less sampling methods. M.Sc. Thesis in Forest Science and Engineering. Faculty of Agriculture, Razi University. 71p. Kiani, B., Fallah, A., Tabari, M., Hosseini, S.M., & Iran-Nejad Parizi, M.H. (2013). Comparing Distance-based and Quadrate-based Methods to Identify Spatial Pattern of Saxaul Haloxylon ammodenderon C.A.Mey (Siah-Kooh Region, Yazd Province). Journal of Natural Environment, Iranian Journal of Natural Resources, 65(4), 475-486. Kint, V., Wulf Robert, D., & Noel, L. (2004). Evaluation of sampling methods for the estimation of structural indices in forest stands. Ecological Modeling, 180(4), 461-476. Kissa, D.O., & Sheil, D. )2012(. Visual detection based distance sampling offers efficient density estimation for distinctive low abundance tropical forest tree species in complex terrain. Forest Ecology and Management, 263, 114-121. Kleinn, Ch., & Vilcko, F. )2006(. A new empirical approach for estimation in k-tree sampling. Forest Ecology and Management, 237(1-3), 522-533. Krebs, C.J. 1989. Ecological Methodology. Harper Collins: New York. 653 PP. Marvie Mohadjer, M.R., (2006). Silviculture, University of Tehran Press, 388pp Moghadam, M.R. )2001(. Quantative plant ecology. Tehran University press. 285pp. Morisita M. (1957): A new method for the estimation of density by spacing method applicable to non-randomly distributed populations. Physiology and Ecology, 7: 134–144. (in Japanese with English summary) Pollard J.H. (1971): On distance estimators of density in randomly distributed forests. Biometrics, 27: 991–1 Salehi, A., & Taheri Sarteshnizi, M.J. (2014). Comparison of accuracy assessment of canopy cover density using a device similar to Cajanus tube and line intersect sampling in a Persian oak stand. Iranian Journal of Forest, 6(3), 309-320. Savage, Sh.L., Lawrence, R.L., Squires, J.R., Holbrook, J.D., Olson, L.E., Braaten, J.D., & Cohen, W.B. (2018). Shifts in forest structure in Northwest Montana from 1972 to 2015 using the Landsat Archive from Multispectral Scanner to Operational Land Imager. Forests, 9(157), 1-20. Seraj, H., B. Kiani & M. Mirabdollahi. (2019). Investigating the accuracy and precision of sector sampling in juniper forests of Amin Abad, FiroozkoohM, Journal of Forest Research and Development, 5(1): 1-13 Sheikholeslami, N., Erfanifard, S.Y., Fallah Shamsi, R., Masoudi, M., & Khosravi, E. (2017). Effect of spatial pattern of trees on efficiency of distance and plot sampling methods in Zagros woodlands. Iranian Journal of Forest, 9(1), 101-117. Southwood, T.R.E. & Henderson, P.A. (2000). Ecological Methods. Blackwell Science. http://www. Blackwell Science. Con/Southwood. 575 pp. Zobeiri, M. (2007). Forest Biometry, University of Tehran Press, 405pp | ||
|
آمار تعداد مشاهده مقاله: 605 تعداد دریافت فایل اصل مقاله: 283 |
||