生态学杂志2009，Vol.28Issue(11)：2183-2188,6.
三峡水库156 m蓄水后消落带新生湿地植物群落
Plant communities in newly created wetlands in water-level fluctuation zone of Three Gorges Reservoir after flooding to 156 m height
摘要
Abstract
After flooding to 156 m height, a wide area of wetlands emerged in the water-level fluctuation zone of Three Gorges Reservoir. From July to September 2008, an investigation was made on the plant communities beside Baijia stream, the first order tributary of Pengxi River in Kaixian County of Chongqing. There were 33 species of wetland vascular plants, among which, Paspalum paspaloides, Typha latifolia, Scirpus juncoides, S. triqueter, Polygonum longisetum were the dominant. The plant communities in study area were divided into eight associations. An obvious zonal distribution was observed at the lateral side of Baijia stream from riparian to 156 m altitude. There were three plant zones, i. e. , floodplain annual herb zone, X. sibiricum zone, and P. paspaloides zone. With increasing elevation, the aboveground biomass showed a single-peak pattern. During the period with lower water level, the increase of soil water content acceler-ated the growth of wetland plants. P. paspaloides was most dominant in the low-lying area of sec-ond terraces of Baijia stream, and X. sibiricum widely distributed on the sloping field between the first and second terraces of the stream. The variations of soil water content and micro-geomorphic pattern significantly affected the distribution of plant communities in water-level fluctuation zone.关键词
三峡水库/消落带/新生湿地/植物群落Key words
Three Gorges Reservoir/ water-level fluctuation zone / newly created wetland / plant community分类
生物科学引用本文复制引用
王强,袁兴中,刘红,王建修..三峡水库156 m蓄水后消落带新生湿地植物群落[J].生态学杂志,2009,28(11):2183-2188,6.基金项目
国家自然科学基金项目(50749045)和国家科技支撑计划资助项目(2006BAJ08B01). （50749045）
