農地景觀生態廊道建構之研究－－以得子口溪流域平原為例

PLANNING FOR THE ECOLOGICAL CORRIDOR OF AGRICULTURAL LANDSCAPE IN DE-ZI-KUO RIVER BASIN

生物棲地的碎裂化是現代農業地景中普遍存在的現象，因此積極尋求碎裂化景觀中棲地及生態功能的連結，成為改善農業景觀生態穩定性的重要途徑。而農地景觀的連結可積極促進農業景觀中棲地物種的互動交流，達成農業景觀生態功能的完整性。本研究從區域農地景觀生態規劃的角度，運用景觀安全格局中生態種源點、生態策略點及網絡連結的概念，分析宜蘭縣得子口溪流域之農地景觀，利用廊道元素對於生物播遷有不同阻抗力的觀點，從既有的廊道元素中尋求景觀陸域及水系最佳景觀生態網絡，作為區域農地景觀生態永續規劃的基礎，最後並提出未來農地利用規劃與管理策略之相關建議。

In modern agricultural landscapes, the habitats of many species are fragmented. Connectivity is an index to analyze the relationships between pattern and processes in fragmented landscape. Connectivity refers to the qualities of the landscape that facilitate the interaction among local populations of habitat patches. This research tries to explore this central question of agricultural land use and planning. Then, it applies the ecological principles of landscape network theory, security patterns(SP)theory to analyze and map the digital spatial data of De-Zi-Kuo river plain in Yi-Lan County. The primary spatial determinants of agricultural landscape such as existing corridors, river channels, irrigation canals, remnant hedgerows and roads of settlements, etc., are selected to build the appropriate ecological network for sustainable agricultural landscape. Finally, the result of this study tries to suggest the spatial strategies of agricultural land planning and management in future.