Abstract: This paper studied the eco-physiological responses of three Ilex species to waterlog-ging- and drought stress. Waterlogging tolerance experiment showed that the contents of proline and MDA in test species increased, while net photosynthetic rate decreased with increasing dura-tion of waterlogging. The responses came earlier by Ilex viridis, followed by I. chinensis, and I. cornata var. fortunei.I. viridis could endure waterlogging for one week, while I. cornata var. fortunei could endure this stress for two weeks or longer. All the three species could be planted in the south of Yangtze River without any limitation of waterlogging. Drought tolerance experiment showed that the proline content in test species increased with increasing duration of drought,and I. viridis had the peak value earlier than I. chinensis and I. cornata var. fortunei. I. viridis could endure drought for 15 days, while I. cornata var. fortunei could endure it for 25 days. All the test species could endure water stress to some degree, I. cornata var. fortunei being the strongest, followed by I. chinensis, and I. viridis.

Key words: Transpiration, Agro-forestrial system, Affecting factors