本研究利用水庫淤泥在砂丘地表面形成護甲層,藉此防止風蝕,並改善砂丘地保水能力。砂丘地淺根植被在種子發芽初期可由水庫淤泥中吸取足夠水分並得以定植,隨後再利用原根系發展出淺層根系土的固結進行深根植物的移植,如此逐一增加利用根系固結的砂丘地土壤深度,藉此改良砂丘地之土壤性質,使砂丘地得以有效利用。 試驗結果顯示當水庫淤泥泥水比在濃度1:1及1:2之間存在一臨界濃度,使得泥漿在砂丘地表層容易形成護甲層,除了增加土壤保水性,有利植物定植外,並可穩定砂丘地地表溫度,保護植物種子。但由於水庫淤泥中的黏土顆粒在水分子中受布朗運動及凡得瓦爾力的影響遠大於重力的作用,故在應用時如何在最低成本的考量下,將泥漿均勻分布在砂丘地上,將是未來應用上的重點。
The experiment in this study aimed to reduce the wind erosion of a sand dune area by covering it with a reservoir sediment layer. The moisture content of the reservoir sediment layer can supply the water needed for rattans to grow, which in turn stabilized the surface sand. Tresss con easily be planed on the sand dune afterward. The results showed that an armor layer will develop on the surface of the dune under a critical range of sediment to water in a ratio of 1:1 to 1:2. The variation of the sand surface temperature also lessened. And the retention of soil water was improved.