Surface runoff as affected by soil water repellency in a Japanese cypress forest
Surface runoff as affected by soil water repellency in a Japanese cypress forest
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DOI：
10.1002/hyp.6749
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发表时间：
2007-08
影响因子：
3.2
通讯作者：
S. Miyata;K. Kosugi;T. Gomi;Y. Onda;T. Mizuyama
中科院分区：
文献类型：
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作者：
S. Miyata;K. Kosugi;T. Gomi;Y. Onda;T. Mizuyama
近年来的研究表明，土壤斥水性是影响水源地水文过程的重要因素之一。在日本，已知在日本柏树（Chamaaparis obtusa）森林下发生拒水性，日本的典型种植园类型，然而，以前的研究没有评估拒水性的严重性及其对地表径流产生的影响。为了量化防水性及其影响，本研究将临界表面张力（CST）测试与一种新的喷雾实验相结合，在该实验中，比较了在0·09-m2地块上喷洒水和乙醇溶液的渗透率。同时对2 m2地块的地表径流、土壤水势和土壤含水量进行了长期密集的水文观测。
Recent studies have suggested that soil water repellency can be one of the important factors affecting hydrological processes on headwater catchments. In Japan, water repellency is known to occur under Japanese cypress (Chamaecyparis obtusa) forests, a typical plantation type in Japan, however, previous studies have not evaluated the severity of water repellency and its effects on surface runoff generation. To quantify water repellency and its effects, this study combined the critical surface tension (CST) test with a new spraying experiment in which the infiltration rates of water and ethanol solutions sprayed over 0·09‐m2 plots were compared. Long‐term intensive hydrological observations of surface runoff from 2‐m2 plots, soil water potential, and soil water content were conducted concurrently.