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中文摘要：
应用生态足迹法计算了三峡工程生态供给足迹和生态需求足迹，结果表明：防洪和发电是三峡工程的主要功能，调蓄洪水生态供给足迹和水力发电生态供给足迹分别为7．13×10^5hm^2／a和4．19×10^5hm^2／a；水库泥沙淤积和水库淹没则是三峡工程的主要负面影响，水库泥沙淤积生态需求足迹和水库淹没生态需求足迹分别为2．66×10^5hm^2／a和1．06×10^5hm^2／a．三峡工程4项生态供给足迹总计1．19×10^6hm^2／a，三峡工程5项生态需求足迹总计4．02×10^5hm^2／a，生态供给足迹是生态需求足迹的29．60倍．每MW装机容量的三峡工程生态供给足迹为653．85hm^2／a，生态需求足迹为22．09hm^2／a；每千人直接淹没人口的三峡工程生态供给足迹为140．63hm^2／a，生态需求足迹为4．75hm^2／a．
英文摘要：
Based on the theory and method of ecological footprint （EF）, ecological supply footprint （ESF） and ecological demand footprint （El）F） in Three Gorges Project （TG P） are calculated. The results show that flood control and hydropower are main functions of TGP, and their ESF are 7. 13106 hm^2/ a and 4. 19106 hm^2/a. The reservoir sedimentation and reservoir inundation by TGP are main negative effects, and their EDF are 2. 66105 hm^2/a and 1. 06105 hm^2/a. The four ESF in total is 1. 19107 hm^2/ a. The sum of five EDF is 4. 02105 hm^2/a. The ESP in total is 29. 60 times that of EDF. The ESP and EDP in TGP of per MW installed capacity are 65 3.85 hm^2/a and 22. 09 hm^2/a. The ESP and EDP in TGP of a thousand of population affected by reservoir inundation are 140. 63 hm^2/a and 4. 75 hm^2/a.
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