抄録
The purpose of this report is to study the relationship between soil temperature and geographical location (altitude andlatitude). The air temperature is expressed as the function of latitude φ and altitude H, and the experimental equation is expressed as follows; spring θa=43.5-1.07φ-0.0056H* summer θa=36.7-0.52φ-0.0050H* fall θa=43.4-0.93φ-0.0050H* winter θa=44.2-1.33φ-0.0060H* annual mean θa=40.7-0.93φ-0.0052H* H*=H-1,000 These eqations indicate average air temperatures of three months in each season. The following are the experimental equations to get the variation of the air temperature (Δθ) in each season. spring Δθ=0.32φ-0.6 summer Δθ=0.28φ-5.3 fall Δθ=0.30φ+0.8 winter Δθ=-0.07φ+5.3 The average lapse-rate of air temperature in mountainous region are 0.59℃/100m in spring, 0.56℃/100m in summer, 0.58℃/100m in fall, 0.72℃/100m in winter and 0.61℃/100m in annual mean. The lapse-rate of air temperature is greatly influenced by the arid Sibelia air-mass in winter and by the humid Ogasawara air-mass in summer
