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根据红外测温法和小气候观测，研究了云南西南季风区（景洪、瑞丽）橡胶林冠面温度（Ｔｃ）基本特征及其与林冠上方１．５ｍ处气温（Ｔａ）的差异（△Ｔ＝Ｔｃ－Ｔａ）。结果表明：在０９—１８时橡胶林冠具有加热作用，Ｔｃ较Ｔａ平均高５—６℃；强光、干燥的午后（１４—１５时）则达９—１１℃；在最低温度出现时，Ｔｃ与Ｔａ差异不显著。还详细讨论了其它环境因子对Ｔｃ或△Ｔ的影响，指出本区较高Ｔｃ有利于橡胶树安全越冬。
According to the infrared thermometry and microclimate observation, the basic characteristics of the crown temperature (Tc) and the temperature difference (Ta) at 1.5m above the forest canopy were studied in the southwest monsoon region (Jinghong, Ruili) of Yunnan Province (△ T = Tc -Ta). The results showed that the rubber canopy had a heating effect at 09-18, Tc was 5-6 ℃ higher than that of Ta, and 9-11 ℃ in bright and dry afternoon (at 14-15). At the lowest temperature, Tc The difference with Ta is not significant. The effects of other environmental factors on Tc or △ T are also discussed in detail. It is pointed out that the higher Tc in this zone is beneficial to the safe winter of rubber trees.