Observations of wet and dry depositions of nutrients in montane forest ecosystems: application of a canopy budget model

本文研究了日本山毛榉林和泰国山地常绿林两种山地森林生态系统的冠层养分循环过程。分析结果表明，在山毛榉、山毛榉、山毛榉占主导地位的样地，山毛榉和山毛榉的年透雨和茎流钾沉积总量均远大于山毛榉。而对于Mg、Ca、NO3等离子，常绿三叶草的年总沉降量远大于两种落叶山毛榉。阐明了山地常绿森林在日、季、年际时间尺度上的雾的发生模式，并讨论了雾对穿透雨产生的影响。

This study investigated nutrient cycling processes in canopy for two montane forest ecosystems, a beech forest in Japan and a hill evergreen forest in Thailand. The analyzed data showed that, for the beech forest site where Fagus crenata, F. japonica, Tsuga sieboldii dominated, an annual total of throughfall and stemflow K depositions of both Fagus crenata and F. japonica were much larger than that of T. sieboldii. In contrast, for ions such as Mg, Ca, and NO3, the annual total deposition of the evergreen T. sieboldii was much larger than those of the two deciduous beech trees. For the hill evergreen forest, fog occurrence patterns on diurnal, seasonal and inter-annual time scales were clarified and its impact on throughfall generation was discussed.