農地不飽和帶土壤水分移動特性之研究－以安康農場為例

Abstract

由於台灣地窄人稠，山坡地的開發成了必然之勢，也因此造成台灣澇旱之災頻仍，如何合理的利用與管理土地，將是政府今後在國土開發的政策上，非常必要的策略。 本論文乃針對農地不同土地利用，諸如旱作地、水田、草生地以及裸露地等，進行入滲的相關試驗研究，因農地多屬不飽和帶，其土壤水分之移動，極為複雜，本研究乃以土壤水力傳導度的測定為基礎，分別對不同土壤深度、重量含水率以及孔隙率的相關性，進行現場與室內的試驗探討，獲得初步的結果。期望由本論文之初期研究成果，能探討出其不同的入滲狀況，作為今後農地土地利用上，有關灌溉方法、排水設計、逕流、地下水補助等應用上之重要參數的訂定，並作為今後國土開發規劃上之參考。

Due to the narrow lands and numerous people in Taiwan, it becomes necessary to open up the mountain slopes, and it also causes many times of floods and droughts in Taiwan. How to use and manage the lands reasonably will be very essential in the policy about development in the future. The thesis is the related experiments of Infiltration with the different use of farm, such as dry farmlands, paddy fields, grasslands and the uncovered lands. Because farmlands are mostly unsaturated, the movement of the soil water is very complicated.The study is on the basis of determinations of the hydraulic conductivity and to proceed the on-site and internal experiments aimed at the correlation between different depths, weight water contents and porosity. From the results of the initial stage on this study, we hope to probe into the different infiltration conditions, and provide consultations in making some important hydraulic parameters and be helpful for the land-use classification and management of farm for the future.