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生態規劃應用於土砂扞止保安林土地使用之研究

Research on Land Use of Soil Conservation Protection Forests- Application of Ecological Planning Method

摘要


由於時空變遷及社會經濟,政治環境變化,保安林是否能夠確實發揮功效,存有相當大的爭議。生態規劃爲分析環境資源的工具,適用於區域性的土地使用適宜性規劃,本文應用生態規劃方法,以台東縣第2508號土砂扞止保安林爲對象,應用地理資訊系統對於空間資料的分析與展示功能,整合土壤流失危險度,土地可使用限度分類標準,水系密度,環境風險率等四項評估準則,評估其環境特性及目前土地使用型態對土砂扞止保安林功能之衝擊。結果顯示:有74.8%應維持保安林狀態,基於土地使用效率考量,對超限或違法墾植之林地,應加強收回造林。

並列摘要


As the changes of social-economic and political environments, whether the protection forests could function efficiently remains controversial nowadays. One of the tools to analyze environmental resources is ecological planning which is suitable to local land-use suitable planning. This study applied above method to investigate No. 2508 soil conservation protection forests in Taitung County. An ARC/TNFO Geographic Information System (GIS) was involved to analyze the data. Four assessment criteria soil loss hazards class, land use constraint classification standard, drainage density, environment risk ratio) were integrated to evaluate the impacts on soil conservation protection forest in different environmental features and land use types. The results show that 74.58% of the experimental area should maintain its original protection functions. In consideration of land use efficiency, it is necessary to retake the over-used or illegal planted forest lands and reforest them.

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