Journal of Korean Society of Forest Science (한국산림과학회지)

Korean Society of Forest Science (한국산림과학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of Tree Density of Pinus koraiensis Forest on the Thermal Comfort and the Physiological Response of Human Body in Summer Season

잣나무림의 입목밀도가 여름철 온열환경 및 인체 생리반응에 미치는 영향

  • Park, Bum-Jin (Department of Environment and Forest Resources, Chungnam National University) ;
  • Kyeon, Chiwon (Department of Environment and Forest Resources, Chungnam National University) ;
  • Choi, Yoonho (Department of Environment and Forest Resources, Chungnam National University) ;
  • Yeom, Dong-geol (Department of Environment and Forest Resources, Chungnam National University) ;
  • Kim, Geonwoo (Department of Environment and Forest Resources, Chungnam National University) ;
  • Joung, Dawou (Department of Environment and Forest Resources, Chungnam National University)
  • 박범진 (충남대학교 산림환경자원학과) ;
  • 권치원 (충남대학교 산림환경자원학과) ;
  • 최윤호 (충남대학교 산림환경자원학과) ;
  • 염동걸 (충남대학교 산림환경자원학과) ;
  • 김건우 (충남대학교 산림환경자원학과) ;
  • 정다워 (충남대학교 산림환경자원학과)
  • Received : 2014.06.30
  • Accepted : 2015.03.09
  • Published : 2015.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study was conducted to examine the effect of tree density of Pinus koraiensis forest on the thermal comfort and the physiological response of human body in summer season. As the indicators of thermal comfort were used the predicted mean vote (PMV) and predicted percentage of dissatisfied (PPD), while the heart rate variability was used for the physiological indicator of subjects. The subjects were 15 physically healthy men and women in their 20s ($23.7{\pm}1.7$ years old). The subjects sat in each site to measure HRV for 5 minutes and the thermal comfort of each site was measured. As a results, it was proven by PMV and PPD that the Pinus koraiensis forest with 120% tree density was thermally more comfortable than the Pinus koraiensis forest with 80% tree density. In case of the subjects' physiological response, the Pinus koraiensis forest with 120% tree density showed significantly higher HF of HRV than the Pinus koraiensis forest with 80% tree density and significantly lower LF/HF. Therefore, the findings of this study scientifically proved that the Pinus koraiensis forest with 120% tree density is thermally more comfortable and physiologically more relaxing than the Pinus koraiensis forest with 80% tree density.

본 연구는 잣나무림의 입목밀도에 따른 여름철 온열쾌적감 및 인체의 생리반응을 조사하기 위해서 진행되었다. 본 연구의 온열쾌적감 지표로는 예상평균한서감지수(PMV)와 예상불만족도(PPD)를 사용하였으며, 피험자의 생리지표로는 심박변동성(HRV)을 사용하였다. 피험자는 신체적으로 건강한 20대 남녀 15명(23.7${\pm}$1.7세)이 참가하였다. 피험자는 각 실험구에 앉아 5분 동안 HRV를 측정하였고, 각 실험구의 온열 환경을 측정하였다. 연구 결과, PMV와 PPD를 통하여 입목밀도가 120%인 잣나무림은 80%인 잣나무림보다 열적으로 쾌적하다는 사실을 확인할 수 있었다. 또한 피험자의 생리반응의 경우 입목밀도가 120%인 잣나무림은 80%인 잣나무림보다 HRV의 HF가 유의하게 높았으며, LF/HF가 유의하게 낮은 것을 알 수 있었다. 따라서 본 연구의 결과를 통하여 입목밀도가 120%인 잣나무림은 80%의 잣나무림보다 열적으로 쾌적하며, 인체 생리적으로 안정된다는 사실을 과학적으로 증명할 수 있었다.

Keywords

References

  1. Cacioppo, J.T., Berntson, G.G., Binkley P.F., Quigley K.S., Uchino, B.N., and Fieldston A. 1994. Autonomic cardiac control. II. Noninvasive indices and basal response as revealed by autonomic blockades. Psychophysiology 31(6): 586-598. https://doi.org/10.1111/j.1469-8986.1994.tb02351.x
  2. Harazono, Y., Murakami, T., and Hayashi, Y. 1990. Thermal environmental characteristics of the shaded area of dense and sparse red pine canopies. Journal of the Japanese Institute of Landscape Architects 53(5): 233-238. https://doi.org/10.5632/jila1934.53.5_233
  3. Joung, D.W., Choi, W.H., Kwoun, C.W., Yeom, D.G., Kim, G.W., Kang, K.N., Kim, Y.T., Ji, D.H., Miyazaki, Y., and Park, B.J. 2013. Effect of thermal environment of forest and grass area on human physiological response. Journal of the Korean Institute of Forest Recreation 17(4): 143-148.
  4. Kim, K.W. 1999. Technical methods for enhancing the health effect in the recreational forest. Journal of Korea Society for People Plants and Environment 2(4): 1-12.
  5. Kobayashi, H., Ishibashi, K., and Noguchi, H. 1999. Heart Rate Variability; An index for monitoring and analyzing human autonomic activities. Journal of Physiological Anthropology 18(2): 53-59.
  6. Lee, J.Y. 2013. Evaluation of the historical development of forest administration paradigm changes. The Journal of Korean Policy Studies 13(3): 261-279.
  7. Lee, M.S., Ka, J.N., Kim, S.A., Park, M.W., Lee, J.W., and Park, B.J. 2011. Effect of walking at the urban arboretums on psychological stability of male university students. Journal of Korea Society for People Plants and Environment 14(5): 271-277.
  8. Lee, Y.H. and Kim, K.W. 2012. The forest landscape management of therapeutic forests by visual preference on the simulation of tree density. Journal of Korean Forest Society 101(4): 648-655.
  9. Park, B.J. and Miyazaki, Y. 2008. Physiological effects of viewing forest landscapes: Results of field tests in Atsugi city, Japan. Journal of Korean Forest Society 97(6): 634-640.
  10. Park, B.J., Tsunetsugu, Y., Kasetani, T., Kagawa, T., and Miyazaki, Y. 2010, The physiological effects of Shinrin-yoku (taking in the forest atmosphere of forest bathing): evidence from field experiments in 24 forests across Japan. Environmental Health and Preventive Medicine 15(1): 18-26. https://doi.org/10.1007/s12199-009-0086-9
  11. Park, B.J., Furuya, K., Kasetani, T., Takayama, N., Kagawa, T. and Miyazaki, Y. 2011. Relationship between psychological responses and physical environments in forest settings. Landscape and Urban Planning 102: 24-32. https://doi.org/10.1016/j.landurbplan.2011.03.005
  12. Shin, W.S., Shin, C.S., Yeoun, P.S., Lee, N.W., Park, K.T., Lee, E.J., and Lee, H.E. 2013. The preference survey of pine tree density for forest healing. Journal of the Korean Institute of Forest Recreation 17(1): 71-80.
  13. Song, C.R., Lee, J.Y., Park, B.J., Lee, M.S., Matsuba, N., and Miyazaki, Y. 2011. Psychological effects of walking in the urban forest: Results of field tests in Shinjuku-gyoen, Japan. Journal of Korean Forest Society 100(3): 344-351.
  14. Takayama, N., Kagawa, T., Kasetani, T., Park, B.J., Tsunetsugu, Y., Oishi, Y., Hirano, H., and Miyazaki, Y. 2005. The Comfortableness of the Light/Thermal Environment for Bathing in the Forest Atmosphere. Journal of The Japanese Institute of Landscape Architecture 68(5): 819-824. https://doi.org/10.5632/jila.68.819
  15. Weise, F. and Heydenreich, F. 1989. Effects of modified respiratory rhythm on heart rate variability during active orthostatic load. Biomedica Biochimica Acta 48(8): 549-556.