과제정보
We would like to express our deepest gratitude to the Forest and Park Services of the Royal Government of Bhutan for providing a research permit to carry out this study. We are extremely grateful to everyone who participated in the data collection.
참고문헌
- Adams RP, Morris JA, Schwarzbach AE. 2008. Taxonomic affintity of Rushforth's Bhutan juniper and Juniperus indica using SNPs from nrDNA and cp trnC-trnD, terpenoids and RAPD data. Phytologia 90: 233-245.
- Adams RP, Schwarzbach AE. 2012. Taxonomy of the turbinate shaped seed cone taxa of Juniperus, section Sabina: sequence analysis of nrDNA and four cpDNA regions. Phytologia 94: 388-403.
- Adams RP, Schwarzbach AE. 2013a. Phylogeny of Juniperus using nrDNA and four cpDNA regions. Phytologia 95: 179-187.
- Adams RP, Schwarzbach AE. 2013b. Taxonomy of the turbinate shaped seed cone taxa of Juniperus, section Sabina: revisited. Phytologia 95: 122-124.
- Alessandrini A, Biondi F, Di Filippo A, Ziaco E, Piovesan G. 2011. Tree size distribution at increasing spatial scales converges to the rotated sigmoid curve in two old-growth beech stands of the Italian Apennines. For Ecol Manag 262: 1950-1962.
- Bell G, Kerr A, McNickle D, Woollons R. 1996. Accuracy of the line intersect method of post-logging sampling under orientation bias. For Ecol Manag 84: 23-28.
- Bin Y, Ye W, Muller-Landau HC, Wu L, Lian J, Cao H. 2012. Unimodal tree size distributions possibly result from relatively strong conservatism in intermediate size classes. PLoS One 7: e52596.
- Burgi A. 2002. Fir (Abies densa) forests in Central Bhutan: a model-based approach to assess a suitable utilization. Forestry 75: 457-464.
- Clark DB, Palmer MW, Clark DA. 1999. Edaphic factors and the landscape-scale distributions of tropical rain forest trees. Ecology 80: 2662-2675.
- Covey K, Carroll CJW, Duguid MC, Dorji K, Dorji T, Tashi S, Wangdi T, Ashton M. 2015. Developmental dynamics following selective logging of an evergreen oak forest in the Eastern Himalaya, Bhutan: structure, composition, and spatial pattern. For Ecol Manag 336: 163-173.
- Daniels LD. 2003. Western redcedar population dynamics in old-growth forests: contrasting ecological paradigms using tree rings. For Chron 79: 517-530.
- Darabant A. 2008. Aspects of Tsuga dumosa regeneration ecology with special reference to sustainable utilization. PhD thesis. University of Natural Resources and Life Sciences, Vienna, Austria.
- Darabant A, Rai PB, Tenzin K, Roder W, Gratzer G. 2007. Cattle grazing facilitates tree regeneration in a conifer forest with palatable bamboo understory. For Ecol Manag 252: 73-83.
- de Caceres M, Chytry M, Agrillo E, Attorre F, Botta-Dukat Z, Capelo J, Czucz B, Dengler J, Ewald J, Faber-Langendoen D, Feoli E, Franklin SB, Gavilan R, Gillet F, Jansen F, Jimenez-Alfaro B, Krestov P, Landucci F, Lengyel A, Loidi J, Mucina L, Peet RK, Roberts DW, Rolecek J, Schaminee JHJ, Schmidtlein S, Theurillat JP, Tichy L, Walker DA, Wildi O, Willner W, Wiser SK. 2015. A comparative framework for broad-scale plot-based vegetation classification. Appl Veg Sci 18: 543-560.
- de Caceres M, Legendre P. 2009. Associations between species and groups of sites: indices and statistical inference. Ecology 90: 3566-3574.
- de Lima RAF, de Moura LC. 2008. Gap disturbance regime and composition in the Atlantic Montane Rain Forest: the influence of topography. Plant Ecol 197: 239-253.
- Diaci J, Rozenbergar D, Anic I, Mikac S, Saniga M, Kucbel S, Visnjic C, Ballian D. 2011. Structural dynamics and synchronous silver fir decline in mixed old-growth mountain forests in Eastern and Southeastern Europe. Forestry 84: 479-491.
- Dufrene M, Legendre P. 1997. Species assemblages and indicator species: the need for a flexible asymmetrical approach. Ecol Monogr 67: 345-366.
- Easdale TA, Healey JR, Grau HR, Malizia A. 2007. Tree life histories in a montane subtropical forest: species differ independently by shade-tolerance, turnover rate and substrate preference. J Ecol 95: 1234-1249.
- Farjon A, Filer D. 2013. An atlas of the world's conifers : an analysis of their distribution, biogeography, diversity, and conservation status. Brill, Leiden.
- Forest Monitoring and Information Division (FMID). 2023. National forest inventory volume I: state of forest report. FMID, Department of Forest and Park Services, Thimphu.
- Franklin JF. 1993. Preserving biodiversity: species, ecosystems, or landscapes? Ecol Appl 3: 202-205.
- Galili T. 2015. Dendextend: an R package for visualizing, adjusting and comparing trees of hierarchical clustering. Bioinformatics 31: 3718-3720.
- Gibbs D, Chamberlain D, Argent G. 2011. The red list of Rhododendrons. Botanic Gardens Conservation International, Richmond.
- Gini C. 1921. Measurement of Inequality of Incomes. Econ J 31: 124-126.
- Goodburn JM, Lorimer CG. 1999. Population structure in old-growth and managed northern hardwoods: an examination of the balanced diameter distribution concept. For Ecol Manag 118: 11-29.
- Gratzer G, Darabant A, Chhetri PB, Rai PB, Eckmullner O. 2004. Interspecific variation in the response of growth, crown morphology, and survivorship to light of six tree species in the conifer belt of the Bhutan Himalayas. Can J For Res 34: 1093-1107.
- Grierson AJC, Long DG, Noltie HJ, Pearce NR, Cribb P. 1983. Flora of Bhutan : including a record of plants from Sikkim. Royal Botanic Garden, Edinburgh.
- Hager A, Dohrenbusch A. 2011. Hydrometeorology and structure of tropical montane cloud forests under contrasting biophysical conditions in north-western Costa Rica. Hydroll Process 25: 392-401.
- Horikoshi M, Tang Y. 2018. Ggfortify: data visualization tools for statistical analysis results. https://CRAN.R-project.org/package=ggfortify. Accessed 1 Apr 2024.
- International Centre for Integrated Mountain Development (ICIMOD). 2011. Digital elevation model of Bhutan. https://rds.icimod.org/home/datadetail?metadataid=8823. Accessed 1 Apr 2024.
- International Union for Conservation of Nature (IUCN). 2024. The IUCN red list of threatened species. Version 2023-1. https://www.iucnredlist.org. Accessed 1 Apr 2024.
- Jang W, Park PS. 2010. Stand structure and maintenance of Picea jezoensis in a northern temperate forest, South Korea. J Plant Biol 53: 180-189.
- Janowiak MK, Nagel LM, Webster CR. 2008. Spatial scale and stand structure in northern hardwood forests: implications for quantifying diameter distributions. For Sci 54: 497-506.
- Joshi SC, Anderson OR. 2020. Poor regeneration of Brown Oak (Quercus semecarpifolia Sm.) in high altitudes: a case study from Tungnath, Western Himalaya. Int J Biodivers Conserv 12: 137-141.
- Kohyama T, Suzuki E, Partomihardjo T, Yamada T, Kubo T. 2003. Tree species differentiation in growth, recruitment and allometry in relation to maximum height in a Bornean mixed dipterocarp forest. J Ecol 91: 797-806.
- Lan G, Hu Y, Cao M, Zhu H. 2011. Topography related spatial distribution of dominant tree species in a tropical seasonal rain forest in China. For Ecol Manag 262: 1507-1513.
- Lanker U, Malik AR, Gupta NK, Butola JS. 2010. Natural regeneration status of the endangered medicinal plant, Taxus baccata Hook. F. syn. T. wallichiana, in northwest Himalaya. Int J Biodivers Sci Ecosyst Serv Manag 6: 20-27.
- Larsen JB, Angelstam P, Bauhus J, Carvalho JF, Diaci J, Dobrowolska D, Gazda A, Gustafsson L, Krumm F, Knoke T, Konczal A, Kuuluvainen T, Mason B, Motta R, Potzelsberger E, Rigling A, Schuck A. 2022. Closer-to-nature forest management. From science to policy 12. European Forest Institute, Joensuu.
- Lasky JR, Bachelot B, Muscarella R, Schwartz N, Forero-Montana J, Nytch CJ, Swenson NG, Thompson J, Zimmerman JK, Uriarte M. 2015. Ontogenetic shifts in trait-mediated mechanisms of plant community assembly. Ecology 96: 2157-2169.
- Leak WB; United States Department of Agriculture (USDA). 2002. Origin of sigmoid diameter distributions. USDA Forest Service, Newtown Square, PA. Research Paper NE-718. pp 10.
- Loehle C. 2000. Strategy space and the disturbance spectrum: a life-history model for tree species coexistence. Am Nat 156: 14-33.
- Long S, McQuarrie N, Tobgay T, Grujic D, Hollister L. 2011. Geologic map of Bhutan. J Maps 7: 184-192.
- Lorimer CG, Dahir SE, Nordheim EV. 2001. Tree mortality rates and longevity in mature and old-growth hemlock-hardwood forests. J Ecol 89: 960-971.
- Lu G, Ren Y, Fu S, Xue H. 2023. Statistics of isolated deep convection initiation and its relation to topography in the North China Area. J Geophys Res Atmos 128: e2022JD037949.
- Lucas A. 2022. Amap package. https://cran.r-project.org/web/packages/amap/vignettes/amap.pdf. Accessed 30 Jun 2024.
- Lyche T. 2020. The singular value decomposition. In: Numerical linear algebra and matrix factorizations (Barth TJ, Griebel M, Keyes DE, Nieminen RM, Roose D, Schlick T, eds). Springer, Switzerland, pp 153-168.
- Maechler M, Rousseeuw P, Struyf A, Hubert M, Hornik K. 2023. Finding groups in data: cluster analysis basics and extensions. R package version 2.1.6. https://cran.r-project.org/web/packages/cluster/cluster.pdf. Accessed 30 Jun 2024.
- Mao K, Hao G, Liu J, Adams RP, Milne RI. 2010. Diversification and biogeography of Juniperus (Cupressaceae): variable diversification rates and multiple intercontinental dispersals. New Phytol 188: 254-272.
- McCune B, Grace JB, Urban DL. 2002. Analysis of ecological communities. MjM Software Design, Gleneden Beach, OR.
- McDonald M. 2016. Nepal: an introduction to the natural history, ecology and human environment in the Himalayas. Mt Res Dev 36: 563-564.
- Mendez-Toribio M, Ibarra-Manriquez G, Navarrete-Segueda A, Paz H. 2017. Topographic position, but not slope aspect, drives the dominance of functional strategies of tropical dry forest trees. Environ Res Lett 12: 085002.
- Menegoz M, Gallee H, Jacobi HW. 2013. Precipitation and snow cover in the Himalaya: from reanalysis to regional climate simulations. Hydrol Earth Syst Sci 17: 3921-3936.
- Metz JJ. 1997. Vegetation dynamics of several little disturbed temperate forests in East Central Nepal. Mt Res Dev 17: 333-351.
- Muller-Landau HC, Condit RS, Harms KE, Marks CO, Thomas SC, Bunyavejchewin S, Chuyong G, Co L, Davies S, Foster R, Gunatilleke S, Gunatilleke N, Hart T, Hubbell SP, Itoh A, Kassim AR, Kenfack D, LaFrankie JV, Lagunzad D, Lee HS, Losos E, Makana JR, Ohkubo T, Samper C, Sukumar R, Sun IF, Nur Supardi MN, Tan S, Thomas D, Thompson J, Valencia R, Vallejo MI, Munoz GV, Yamakura T, Zimmerman JK, Dattaraja HS, Esufali S, Hall P, He F, Hernandez C, Kiratiprayoon S, Suresh HS, Wills C, Ashton P. 2006. Comparing tropical forest tree size distributions with the predictions of metabolic ecology and equilibrium models. Ecol Lett 9: 589-602.
- Namgay S, Sridith K. 2020. Distribution pattern of the genus Rhododendron in Bhutan Himalayan range. Sci Asia 46: 429-435.
- Nimasow G, Nimasow OD, Tsering G. 2015. Vanishing Taxus baccata L. Due to unsustainable exploitation and climate change in West Kameng and Tawang Districts of Arunachal Pradesh. Earth Sci 4: 11-18.
- Nishimura N, Hara T, Kawatani M, Hoshino D, Yamamoto SI. 2005. Promotion of species co-existence in old-growth coniferous forest through interplay of life-history strategy and tree competition. J Veg Sci 16: 549-558.
- Ohsawa M. 1987. Vegetation zones in the Bhutan Himalaya. In: Life zone ecology of the Bhutan Himalaya (Ohsawa M, ed). Chiba University, Chiba, pp 1-72.
- Oksanen J, Kindt R, Legendre P, O'Hara B, Simpson GL, Solymos PM, Stevens MHH, Wagner H. 2008. The vegan package. Community ecology package. https://github.com/vegandevs/vegan. Accessed 1 Apr 2024.
- Olson DM, Dinerstein E, Wikramanayake ED, Burgess ND, Powell GVN, Underwood EC, D'amico JA, Itoua I, Strand HE, Morrison JC, Loucks CJ, Allnutt TF, Ricketts TH, Kura Y, Lamoreux JF, Wettengel WW, Hedao P, Kassem KR. 2001. Terrestrial ecoregions of the world: a new map of life on earth: a new global map of terrestrial ecoregions provides an innovative tool for conserving biodiversity. Bioscience 51: 933-938.
- Pakgohar N, Rad JE, Gholami G, Alijanpour A, Roberts DW. 2021. A comparative study of hard clustering algorithms for vegetation data. J Veg Sci 32: e13042.
- Pant S, Samant SS. 2008. Population ecology of the endangered Himalayan Yew in Khokhan Wildlife Sanctuary of North Western Himalaya for conservation management. J Mt Sci 5: 257-264.
- Piovesan G, Di Filippo A, Alessandrini A, Biondi F, Schirone B. 2005. Structure, dynamics and dendroecology of an old-growth Fagus forest in the Apennines. J Veg Sci 16: 13-28.
- R Core Team. 2021. R: a language and environment for statistical computing (version 1.2.5033). https://www.R-project.org. Accessed 1 Apr 2024.
- Rai DM, Pongpattananurak N, Poolsiri R, Ngersaengsaruay C. 2018. The relationship of Himalayan Yew (Taxus baccata L.) with other plant communities and environmental factors in the western part of Bhutan. J Trop For Res 2: 36-52.
- Roder W, Gratzer G, Wangdi K. 2002. Cattle grazing in the conifer forests of Bhutan. Mt Res Dev 22: 368-374.
- Rosset J. 1999. Temperate conifer forests of Bhutan : a review of forestry research activities until June, 1998. RNR-RC, Jakar.
- Rousseeuw PJ. 1987. Silhouettes: a graphical aid to the interpretation and validation of cluster analysis. J Comput Appl Math 20: 53-65.
- Sharma CM, Tiwari OP, Rana YS, Krishan R, Mishra AK. 2016. Plant diversity, tree regeneration, biomass production and carbon storage in different oak forests on ridge tops of Garhwal Himalaya. J For Environ Sci 32: 329-343.
- Simon A, Dhendup K, Rai PB, Gratzer G. 2018. Soil carbon stocks along elevational gradients in Eastern Himalayan mountain forests. Geoderma Reg 12: 28-38.
- Slowikowski K. 2011. Automatically position non-overlapping text labels with 'ggplot2'. https://github.com/slowkow/ggrepel. Accessed 1 Apr 2024.
- Sollins P. 1982. Input and decay of coarse woody debris in coniferous stands in western Oregon and Washington. Can J For Res 12: 18-28.
- Sterba H. 2008. Diversity indices based on angle count sampling and their interrelationships when used in forest inventories. Forestry 81: 587-597.
- Takahashi K. 1997. Regeneration and coexistence of two subalpine conifer species in relation to dwarf bamboo in the understorey. J Veg Sci 8: 529-536.
- Tashi S. 2004. Regeneration of Quercus semecarpifolia Sm. in an old growth oak forest under Gidakom FMU-Bhutan. MS thesis. Wageningen University, Wageningen, Netherlands.
- Tenzin K. 2008. Regeneration and gap dynamics in mixed conifer forests of the Bhutan Himalayas. PhD thesis. University of Natural Resources and Life Sciences, Vienna, Austria.
- van Wagner CE. 1968. The line intersect method in forest fuel sampling. For Sci 14: 20-26.
- Vetaas OR. 2000. The effect of environmental factors on the regeneration of Quercus semecarpifolia Sm. in Central Himalaya, Nepal. Plant Ecol 146: 137-144.
- Vila-Vilardell L, Keeton WS, Thom D, Gyeltshen C, Tshering K, Gratzer G. 2020. Climate change effects on wildfire hazards in the wildland-urban-interface - blue pine forests of Bhutan. For Ecol Manag 461: 117927.
- Wangda P, Ohsawa M. 2006. Structure and regeneration dynamics of dominant tree species along altitudinal gradient in a dry valley slopes of the Bhutan Himalaya. For Ecol Manag 230: 136-150.
- Weiss AD. 2001. Topographic position and landforms analysis. In: Poster presentation, ESRI user conference; San Diego, USA; July 9-13, 2001.
- Westphal C, Tremer N, von Oheimb G, Hansen J, von Gadow K, Hardtle W. 2006. Is the reverse J-shaped diameter distribution universally applicable in European virgin beech forests? For Ecol Manag 223: 75-83.
- Whitford PB. 1949. Distribution of woodland plants in relation to succession and clonal growth. Ecology 30: 199-208.
- Whittaker RH. 1956. Vegetation of the great smoky mountains. Ecol Monogr 26: 1-80.
- Wickham H. 2016. Ggplot2: elegant graphics for data analysis. https://ggplot2.tidyverse.org. Accessed 1 Apr 2024.
- Wilson JB, Agnew ADQ, Roxburgh SH. 2019. Mechanisms of coexistence. In: The nature of plant communities (Wilson JB, Agnew ADQ, Roxburgh SH, eds). Cambridge University Press, Cambridge, pp 66-104.
- Wright SJ, Muller-Landau HC, Condit R, Hubbell SP. 2003. Gap-dependent recruitment, realized vital rates, and size distributions of tropical trees. Ecology 84: 3174-3185.
- Zenner EK. 2005. Development of tree size distributions in Douglas-Fir forests under differing disturbance regimes. Ecol Appl 15: 701-714.