「嚴重地層下陷地區」屬於需要國土復育之重點區域。雖然政府多年來為解決雲林沿海地層下陷日益惡化之問題,已經採取各項補救與防治措施,對超抽地下水的問題加強管理與違法取締,惟針對地層下陷地區土地適宜性之空間利用模式研究則尚未完善深入。 本研究選擇雲林沿海嚴重地層下陷地區之北港溪流域下游集水區為案例範圍,實證操作地景生態規劃方法之應用;首先調查與評估實證地區之非生物類型資源、生物類型資源、文化類型資源,其次採用可利用土地決定程序(Net Usable Land Area Process)方法,排除不合適的土地利用類型,以界定土地使用衝突與適宜之空間格局,同時根據實證區域之現況地景空間結構、空間發展概念與規劃目標樹,研擬防衛型、機會型、進攻型等三種類型之規劃策略,最後提出未來永續性之土地使用願景方案,分別為擴大濕地、農地調整、排水改善等三項願景方案,建議以分期分年分區執行,分階段達成願景方案之規劃目標。
Serious Surface Subsidence Area is an important area for national territory restoration. Although the government has adopted remedial and preventive measures for deterioration of surface subsidence by enhancing its management and putting a ban on illegal excessive groundwater abstraction, the land use suitability model of surface subsidence area still has not been studied thoroughly. This research applies the Landscape Ecological Planning method to study the Penkang River basin downstream watershed in the Yu-Lin surface subsidence coastal area. First, this research surveys and evaluates three kinds of environmental resources: inorganic type, organic type, and cultural type. Second, it employs the Net Usable Land Area Process method to eliminated unusable land types in order to define the conflict and suitable land use patterns. According to the landscape spatial structure, space developing concepts, and planning objective tree, it, then, develops three planning devices: defensive, opportunity, and offensive. Finally, it proposes the future sustainable land development scenarios, which are expanding wetlands, regulating farmlands, and improving drainage systems, and it suggests that they shall be implemented by phases and areas to achieve the planning objectives.