用气象站资料推算附近森林浅层地温和气温

森林生态系统碳循环研究已成为全球气候变化研究的焦点之一.森林的碳循环包含着复杂的生理和物理过程,主要包括树木的光合与呼吸作用,土壤温度和空气温度对这些过程具有重要影响,例如,土壤呼吸占整个森林生态系统呼吸的40%～80%(Raich et al.，1992),一般认为土壤呼吸强度与浅层土壤温度呈指数关系，所以浅层土壤温度成为该领域研究的一个重要指标(Anthoni et al., 1999; Hollinger et al., 1994;吴家兵等，2003;关德新等,2004;于贵瑞等，2004),而森林冠层气温是决定树木光合作用和其他生理活动的重要环境因子(胡新生等,1996;1997;何维明等，2003).

Estimating Air and Shallow Soil Temperatures in Forest Site by the Recordings at Neighboring Meteorological Station

Air and shallow soil temperature in forest site are important factors impacting carbon cycle and plant physiology of the ecosystem.It is an effective method to estimating these temperatures by the recordings at neighboring meteorological station.The estimations will fill the gap of micrometeorological measurements in forest area.An empirical model to estimate the air temperature in the crown and soil temperature at 5 and 20 cm depth in the mixed forest of broad_leaved and Korean_pine was established,according to the recordings at adjacent meteorological station.The effects of seasons and snow coverage were taken into account in model establishment.The results showed that estimations were well accordance with the measurements.