Yuichirou KODAMA

Interception Evaporation Amounts Depending on Tree Species

Minjiao LU

This study purpose was estimating the interception evaporation amounts of the deciduous broad-leaved forest and evergreen coniferous forest by rainfall interception model, and simulating the change of the interception evaporation amounts when evergreen coniferous forest changed in the deciduous broad-leaved forest. The interception model was used by Kondo model, and the calculation of the potential evaporation was used by Pristley-Taylor method. The meteorological data employed for the model were obtained from Japan Meteorological Agency and Ministry of Land, Infrastructure, Transport and tourism. The leaf area index was referred by documents. The subject catchments were Inagawa (about 59km2), Dokigawa (about 90km2) and Abegawa (about 288km2).
As a result, there is more interception evaporation amounts of the evergreen coniferous forest than one of the deciduous broad-leaved forest. When the area of broad-leaved forest was increased as much as the area of evergreen coniferous forest was deciduous, all forest of the interception evaporation amounts was decreased. In addition, the difference of interception evaporation amounts of that case is not small in the area where drought flow is small.

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