Do coniferous forests evaporate more water than broad-leaved forests in Japan?
Do coniferous forests evaporate more water than broad-leaved forests in Japan?
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DOI：
10.1016/j.jhydrol.2007.01.009
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发表时间：
2007-04
影响因子：
6.4
通讯作者：
H. Komatsu;N. Tanaka;T. Kume
中科院分区：
文献类型：
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作者：
H. Komatsu;N. Tanaka;T. Kume
根据美国的一项案例研究，在日本，人们普遍认为针叶林比阔叶林蒸发更多的水。如果这是真的，那么将针叶林转变为阔叶林将导致水产量的增加。然而，目前尚不清楚美国的案例研究是否适用于日本的森林。在回顾67个干冠层和16个湿冠层蒸发研究的基础上，建立了一个计算森林年蒸散量E的简单模型。我们计算了在日本发现的气象条件下的阔叶林和针叶林的E值。阔叶林的E值与幼龄针叶林的E值基本相同，但高于老龄针叶林的E值。该模型的预测结果得到了日本三个试验集水区水量平衡数据的支持。从数据中得出的结论是，在日本，针叶林蒸发的水分并不比阔叶林多。
It is a commonly held belief in Japan, based on a US case study, that coniferous forests evaporate more water than broad-leaved forests. If this is true, converting coniferous forests into broad-leaved forests would result in an increased water yield. However, it is not known whether the US case study is applicable to Japanese forests. A simple model was developed to calculate annual forest evapotranspiration E based on the review of 67 dry-canopy and 16 wet-canopy evaporation studies. We calculated the E values for broad-leaved and coniferous forests under meteorological conditions found in Japan. E of broad-leaved forests was approximately the same as E of young coniferous forests and higher than E of old coniferous forests. The results predicted by the model were supported by water balance data from three Japanese experimental catchments. The conclusion from the data is that coniferous forests do not evaporate more water than broad-leaved forests in Japan.