全球氣候變遷的情況下，自然條件改變，河川年平均流量能值將會增加的情況下，自然河道的型態將明顯不易維持，整體流域的投資經營管理將日形重要。隨著人口成長，土地利用需求快速增加，人類擷取自然環境資源轉換為具有經濟價值的物質，但人類利用自然資源的速率遠超過自然界自行修復的速率，以致生態系結構逐漸惡化、生態物種歧異度降低，進而減少環境原本能提供的物質與服務。隨著社會經濟的發展，人類在追求物質的滿足之餘，開始講究生活環境的舒適度，重視人類與環境的共存關係，以及人類行為對環境所造成的嚴重衝擊。
本研究在流域尺度下，運用Odum建立之能值方法，計算系統的能量流動狀況，據以描述流域的整體環境特性。根據各種能量流間之比例關係及國內外已建立之多項能值指標，以蘭陽溪流域為例，分析該流域之生態-經濟介面，並評價自然環境對經濟系統的貢獻。本研究進一步探討河川永續發展之方向，建立流域在遭受洪水衝擊下的河川脈衝(RPI)與能值匹配(EMI)等兩種經營管理指標，以供運用。
在同一流域相同匹配（EMI值）條件下，方案應選擇配合RPI的內容，定出最佳選擇方案。在生態工程與河川管理方案的選擇上，將各種可能從事的經營管理或是生態工程方案的能值計算出來，最佳方案應為能值投入密度與EMI相稱者。環境能值的投入，不應受到管理或是工程措施改變，因此，方案實施前後應評估流域的RPI，以瞭解對生態環境的影響程度或趨勢。

The contradictory viewpoints of hydraulic engineers and ecologists have long been a conflict in watershed management. The traditional approach of hydraulic engineering is to use levees to stop water and prevent flooding, but these concrete structures are not very environmental friendly and are likely to keep people away from the aquatic environment. The harmonious interactions between people and nature are often overlooked. Ecologists, on the contrary, tend to over emphasize the aesthetic issues by preserving the natural environment and utilizing natural materials instead of man-made materials, such as concrete. In some circumstances, such materials have been used without sufficient consideration for hazard-mitigation and prevention. Attempts to bring these two conflicting viewpoints into reconciliation all seem to be a long shot.
The concept of emergy, developed by Howard T. Odum, is usually used to assess the contribution of natural environment to human economic system. Emergy is the availability of energy of one kind that is used up in transformations directly and indirectly to make a product or services. In this study, emergy synthesis is proposed as a tool for studying the watershed management approach in Taiwan. The emergy contributions of river at different levels of the global and regional hydrological cycle are evaluated. Two new indicators for river management, River Pulsing Index and Emergy Matching Index, are developed to judge the trade-off between economy and ecology.

中文部分

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黃書禮，「都會區生態經濟系統與環境品質之研究」，行政院國家科學委員會，NSC 80-0421-P-005-02Z，台北(1992)。
黃書禮、吳修綺、陳維斌，「引介生態工程理念評估都市生態經濟系統之環境品質」，都市與計畫，第21卷，215-232 (1994) 。
黃書禮、高文彥，「天然災害損失之能值評估—以汐止地區象神颱風為例」，都市與計畫，第21卷，89-113 (2002)。
黃書禮，「都市生態經濟與能量」，詹氏書局，台北，271頁(2004)。
黃書禮等，「河川與都市發展變遷關係能值分析」，行政院國家科學委員會，NSC 94-2415-H-305-014，NSC 95-2415-H-305-020，(2007) 。
賴建成，「以能值分析於水資源管理決策的運用－以翡翠水庫為例」，碩士論文，臺北大學資源管理研究所，台北(1997)。
吳家琳，「以能量之空間階層特性探討河川與都會土地使用間關係」，碩士論文，臺北大學資源管理研究所，(1997)。
洪鴻智，「複雜與空間動態」，都市與計劃，第25卷，第一期，p71-92(1998)。
郭祝瑛，「應用能值分析方法探討水庫集水區整治策略－以德基水庫為例」，碩士論文，臺北大學資源管理研究所，台北(2003)。
郭達志、方濤、杜培軍、員疆，「論複雜系統研究的等級結構與尺度推繹」，中國礦業大學學報，第32卷，第3期，p213-217(2003)。
李培芬、林曜松、李玲玲、陳子英、陳建志、梁世雄，「蘭陽溪河川情勢調查」，經濟部水利署水利規劃試驗所，台中(2004)。
林奕岑，「應用能量分析探討都市發展變遷與河川之關係－以淡水河流域為例」，碩士論文，臺北大學都市計劃研究所，台北(2005)。

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