长白山阔叶红松林夏季温度特征研究

森林是陆地生态系统的重要组成部分 ,而森林生态系统的生产、呼吸等生态过程都受温度的制约。对森林温度特征的研究 ,是揭示森林生态系统功能 ,评估森林对环境综合效益的基础。早在 2 0世纪初 ,德国学者Ｇｅｉｇｅｒ8] 就作了赤松林气温日变化研究 ,随之 ,后人也作了大量的相关工作 ,对森林温度特征认识逐步深化1～ 3,5,7] 。长白山阔叶红松林是我国东北东部中温带湿润气候区最重要的森林植被类型 ,是中国东北样带东部最典型的生态系统。它对调节气候 ,稳定生态平衡有着重要作用。此研究通过对长白山阔叶红松林林内空气温度与土壤温度进行…

Summer Temperature Characteristics of Broadleaved Pinus koriaensis Forest in Changbai Mountain

Air and soil temperatures were observed in and out of broadleaved P.koriaensis forest (average height 25m) at Changbai Mountain in July,2000.The results showed that there was a very obvious difference between temperatures in and out of forest and both of them showed diurnal variation.Air temperature in the forest at 2m height was always lower in daytime and higher at nighttime than that in the open air.Air temperature at height of 22m in the forest was higher than that at 2m.The difference of air and soil temperature at the two sites in clear day was larger than that in cloudy day,and the latter was larger than that in overcastday.Reasons were also explained.