Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest
Energy balance storage terms and big-leaf evapotranspiration in a mixed deciduous forest
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落叶混交林的能量平衡储存条件和大叶蒸散量
DOI：
10.1051/forest:2001143
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发表时间：
2001
影响因子：
3
通讯作者：
R. Lemeur
中科院分区：
文献类型：
--
作者：
R. Samson;R. Lemeur
在混交林中研究了五种不同的储热条件。在计算总蓄热量时，应考虑到所有项，因为它们在某些天气条件和时间内都可能是重要的。利用红外辐射计测得的表面温度来估计生物质的蓄热，这似乎是一种很好的方法。经常被忽视的光合储热也不能忽略。在季节基础上，土壤蓄热似乎是最重要的术语。总体蓄热量在秋季向大气释放热量的趋势不大。总蓄热量的波动是几个气候参数复杂变化的结果。由于森林与大气的高度耦合，对于测定大叶林的蒸散量而言，准确地测量总蓄热量并不是最重要的。
Five different heat storage terms were studied in a mixed deciduous forest. All terms should be taken into account for the cal- culation of the overall heat storage, because they all can be significant during certain weather conditions and hours. Heat storage in bio- mass is estimated using surface temperatures measured with an infrared radiometer, which seems to be a good method. The often neglected photosynthetic heat storage may not be omitted. On a seasonal basis soil heat storage seems to be the most important term. The overall heat storage shows a small tendency for releasing heat to the atmosphere during fall. Fluctuations in overall heat storage are a re- sult of complex changes of several climatic parameters. Due to the high degree of coupling of the forest to the atmosphere, accurate mea- surements of overall heat storage for the determination of big leaf forest evapotranspiration are not of the utmost importance.