云南省桉树与水分及气候的关系

The relationship between Eucalyptus and climate

近年云南省持续干旱,一部分人认为是桉树耗水量过大导致地下水位下降。分析云南省历史气候记录,及桉树在云南省的历史和现状,认为没有坚实的科学依据可以证明桉树是云南目前的干旱根源。对桉树的耗水量和水分利用率以及桉树人工林对林下土壤水分的影响进行分析,得到,桉树人工林水分利用率相当高,并且会随水分环境进行一定调节,并不会发生掠夺性的耗水,林下土壤的水分涵养效果也比较好。只要合理科学的经营桉树人工林,不仅可以促进经济的发展,同样可以实现桉树的生态效益。

There was a continuous drought in Yunnan Province in recent years,some people consider that Eucalyptus' excessive water consumption led to the decrease of the underground water level.Analyse the historical climate records of Yunnan Province,and the history and status quo of Eucalyptus in Yunnan Province,come to there is no solid scientific basis to prove that Eucalyptus was reason of the current drought in Yunnan.Analyse the Water consumption and water use efficiency of Eucalyptus and the influence of Eucalyptus plantations to the soil moisture,come to that water use efficiency of Eucalyptus plantation is quite good,and will be in accordance with the water environment,there won't be excessive water consumption,forest's soil moisture conservation effect is good.Management the Eucalyptus plantation reasonably and scientificly,it not only can promote the development of economy,also can achive the Eucalyptus' ecological benefits.