Effect of Long-time and Deep Submergence on Recovery Growth and Photosynthesis of Three Grass Species in Three Gorges Reservoir Area Effects of Submergence on Growth,Survival and Recovery Growth of Alternanthera philoxeroides Effects of simulated submergence and drought on the nutrient content of soils planted with Dawn Redwood (Metasequoia glyptostroboides) saplings Recovery Growth and Photosynthesis of Cotton at Seedling Stage with Waterlogging Stress Recovery effects of morphology and photosynthetic characteristics of maize (Zey mays L.) seedlings after water-logging The effects of flooding on survival and recovery growth of the riparian plant Salix variegata Franch. in Three Gorges reservoir region