蓮華池坡地檳榔園土壤入滲模式之研究

Infiltration Models for Soils on a Sloping Betel Palm Farm in the Lienhuachi Area of Central Taiwan

盧惠生(Hui-Sheng Lu) ； 胡蘇澄(Su-Cherng Hu) ； 林壯沛(Jaung-Pey Lin)

《台灣林業科學》 11卷4期 (1996/12) Pp. 409-420

https://doi.org/10.7075/TJFS.199612.0409

摘要

本研究經由野外模擬降雨試驗，量測台灣中部蓮華池坡地檳榔園入摻特性，並驗證Philip及Horton入滲模式的適合性。檳榔園土壤為土深甚淺的黏質壤土，檳榔樹齡已達10年生。根據野外量測與模式驗證獲知於蓮華池坡地檳榔園，推估土壤入滲以Philip入摻模式較Horton入滲模式為佳。Philip入滲模式參數中的相當於飽和土壤導水度(k(θ(下標 s)))，於蓮華池坡地檳榔園測得之極限值為：陡坡地(30°)約45mm/hr，緩坡地(20°)約65mm/hr；而另一參數吸著力(s)與土壤初期含水量呈反比關係。蓮華池坡地檳榔園的土壤最終入滲率，陡坡(30°)的極限值約約50mm/hr，緩坡(20°)的極限值約70mm/hr，且土壤最終入滲率小於極限值時，降雨強度增大，土壤最終入摻率隨之增加。

關鍵字

入滲 ； 檳榔園 ； 蓮華池

並列摘要

The objectives of this study were to measure infiltration characteristics of soils on a steep betel palm (Areca catecha) farm in the Lienhuachi area of central Taiwan using simulated rainfall, and to test the adaptability of Philip's and Horton's respective infiltration models for sloping lands. Soils on the betel palm farm were shallow clay barns. The betel palms were about ten years old. Based on comparisons of model predictions with field data. Philip's infiltration model was better than Horton's infiltration model for predicting infiltration characteristics on the betel palm farm. The maximum value of the parameter related to saturated soil hydraulic conductivity (k(θ(subscript s))) in Philip's infiltration model was about 45mm/hr on steeper slopes (30°) and about 65mm/hr on less steep slopes (20°). The sorptivity (S) in Philip's infiltration model was negatively related to initial soil moisture. The maximum value of the final infiltration rate was about 50mm/hr on steeper slopes (30°) and about 70mm/hr for less steep slopes (20°). The final infiltration rate increased as rainfall intensity increased until the maximum value of the final infiltration rate was reached.

並列關鍵字

infiltration ； betel palm farm ； Lienhuachi