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 ผลงานตีพิมพ์ในวารสารวิชาการHabitat divergence in sympatric Fagaceae tree species of a tropical montane forest in northern Thailandผู้แต่ง: Noguchi, Hideyuki, Itoh, Akira, Mizuno, Takashi, Sri-Ngernyuang, Kriangsak, Kanzaki, Mamoru,  Dr.Sakhan Teejuntuk, Assistant Professor , Sungpalee, Witchaphart, Hara, Masatoshi, Ohkubo, Tatsuhiro, Mr.Pongsak Sahunalu, Professor , Mr.Pricha Dhanmanonda, Associate Professor, Yamakura, Takuo, วารสาร: 
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ผลงานตีพิมพ์ในวารสารวิชาการIntra- and interspecific variation in wood density and fine-scale spatial distribution of stand-level wood density in a northern Thai tropical montane forestผู้แต่ง:Sungpalee, W, Itoh, A, Kanzaki, M, Sri-Ngernyuang, K, Noguchi, H, Mizuno, T, Dr.Sakhan Teejuntuk, Assistant Professor, Hara, M, Chai-Udom, K, Ohkubo, T, Sahunalu, P, Dhanmmanonda, P, Nanami, S, Yamakura, T, Sorn-Ngai, A, วารสาร:  |
ผลงานตีพิมพ์ในวารสารวิชาการAntibiotic resistance profiles of soil bacterial communities over a land degradation gradientผู้แต่ง:Doi, R, Mr.Pongsak Sahunalu, Professor, Wachrinrat, C, Dr.Sakhan Teejuntuk, Assistant Professor, Sakurai, K, วารสาร: |
ผลงานตีพิมพ์ในวารสารวิชาการSemiquantitative color profiling of soils over a land degradation gradient in Sakaerat, Thailandผู้แต่ง:Doi, R, Wachrinrat, C, Dr.Sakhan Teejuntuk, Assistant Professor, Sakurai, K, Mr.Pongsak Sahunalu, Professor, วารสาร: |
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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Preliminary Study on the Transpiration Rate of Tropical Tree Species in Thailand) ผู้เขียน:นายปรีชา ธรรมานนท์, รองศาสตราจารย์, Mamoru Kanzaki, นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์, Ladawan Atipanumpai สื่อสิ่งพิมพ์:pdf AbstractThe diffusive resistance and the transpiration rates of 35 species, both exotic and indigenous were measured at four study sites throughout Thailand. The diurnal changes of transpiration rate were observed from morning to evening. The diffusive resistance of most species temporally increased around noon. The transpiration rate fluctuated remarkably with the Photosynthetic Photon Flux Density (PPFD). The effect of leaf ages and the upper and the lower surfaces of leaf on the transpiration rates were discussed. Water consumption in stand level and the transpiration ratio were calculated for E. camaldulensis and A. mangium. E. camaldulensis showed higher water consumption but lower transpiration ratio based on stem biomass compared to A. mangium. |
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ที่มา:วารสารการจัดการป่าไม้หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Stand Structure and Species Composition in the Long-term Dynamic Plots of Sakaerat Deciduous Dipterocarp Forest, Northeastern Thailand) ผู้เขียน:นายพงษ์ศักดิ์ สหุนาฬุ, ศาสตราจารย์ สื่อสิ่งพิมพ์:pdf AbstractStand structure and species composition were analyzed in 4 stands, each 1 ha square plot established for the long-term forest dynamic studies in Sakaerat deciduous dipterocarp forest (SDDF) in 1894. All 4 stands exhibit their stand structural organization as being open and less crown overlapping among the canopy tree species. The stands are identified as having considerable large canopy gap. The forest canopy is stratified into 2 layers in stand 1 and 3; and 3 layers in stand 2 and 4 in this forest type. The stands are dominated by tree species belonging to Dipterocarpaceae family and being co-occurrence with several tree species in other families. Stand density of trees (DBH ? 4.5 cm) in the 4 stands varies from 555 to 823 trees.ha-1. Species composition ranges from 32 to 37 species, average tree height from 7.48 to 12.08 m, total basal area from 14.52 to19.11 m2.ha-1. Species diversity as determined by Shannon-Weiner’s index varies from 1.980 to 2.732. These stand parameters are recorded and used as the baseline information for future long-term study on their dynamics. The different 4 stands are classified basing on the highest and the next following importance value index (IVI) of the leading two co-occurring tree species as 4 association types: (1) Shorea roxburghii-Quercus kerrii, (2) Shorea obtusa-Shorea siamensis, (3) Shorea obtusa- Pterocarpus macrocarpus and (4) Shorea siamensis-Shorea roxburghii association types in stands1, 2, 3, and 4 respectively. |
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