Stormflow generation in tropical rainforests: a hydrochemical approach
Stormflow generation in tropical rainforests: a hydrochemical approach
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热带雨林风暴流的产生：水化学方法
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
H. Elsenbeer
中科院分区：
文献类型：
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作者：
D. Hensel;H. Elsenbeer
土壤物理和水文气象特征的相互作用决定了特定地质生态系统的主要水文流动路径。在昆士兰州东北部和亚马逊河流域西部的热带雨林中，这种相互作用有利于近地表流动路径参与暴雨流生成，其化学指纹与地下流动路径不同。使用钾与二氧化硅的摩尔比，以明确区分近地表和地下流动路径，在端元混合模型中，我们表明，事件水的暴雨流量贡献的饱和坡面流的形式，几个可能的近地表流动路径之一，达到50%。近地表流动路径的总贡献，其中也包括事件前的水，可以大大提高。
The interaction of soil physical and hydrometeorological characteristics determine the prevailing hydrological flow paths for a given geo-ecosystem. In the tropical rainforests of northeast Queensland and western Amazonia that interaction favors the participation of near- surface flow paths in stormflow generation whose chemical fingerprint is distinct from that of subsurface flow paths. Using the molar ratio of potassium to silica, to differentiate unambiguously between near- surface and subsurface flow paths, in an end-member mixing model, we show that the stormflow contribution of event water in the form of saturation overland flow, one of several possible near-surface flow paths, reaches 50%. The total contribution of near-surface flow paths, which also encompass pre-event water, can be considerably higher.