Effects of storage condition and duration on seed germination of four annual species growing in water-level-fluctuation zone of Three Gorges Reservoir Effects of submergence on seed germination of nine annual plant species in the Three Gorges Reservoir region and their implication to vegetation restoration Quantitative Analysis of Plant Communities in Water- level-fluctuation Zone within Three Gorges Reservoir Area of Changjiang River Advances in Studies on Water-Level-Fluctuation Zone Natural Distribution and Ex Situ Conservation of Endemic Species Myricaria laxiflora in Water-level-fluctuation Zone within Three-Gorges Reservoir Area of Changjiang River Species Composition and Species Diversity of Plant Community in the Water-lever-fluctuation Zone of Three Gorges Reservoir