石灰岩珍稀保护植物四数木育苗种植应用研究——作为环保措施在云南李仙江龙马、居甫渡、戈兰滩水电站的实践

Application of implant limestone rare and protected plants tetrameter nudiflora seedling——As the environmental protection measures in Yunnan Li Xianjiang, Longma Jufudu, the practice of Gelantan Hydropower Station

四数木属国家二级保护珍稀植物,是典型的东南亚热带雨林稀有植物之一,其独特的"板根现象"体现出四数木在石灰岩地质结构生长环境中较为突出的适应性,也是热带雨林乔木标志性的代表之一。在李仙江流域龙马、居甫渡和戈兰滩水电站建设蓄水发电后的植被恢复过程中,将四数木作为原生珍稀植物采育树种之一,搭配多种原生珍稀植物及乡土树种交叉种植,研究及实践流域内珍稀植物群落人工恢复措施。课题组自2008年5-6月开始在流域采集种子育苗,随后从第二年开始,陆续在龙马水电站、居甫渡水电站以及戈兰滩水电站实施种植并管护至成林。实践表明,四数木在幼苗阶段较为脆弱,易折断。人工培育成壮苗后在李仙江流域的生境条件下适应性极强,并且生长迅速,成活率可达90%以上。此外,种植地块的选择对四数木能否正常生长也极为重要,干扰因素主要是人为和牲畜。

National secondary protection of rare and endangered plants of the Tetrameles nudiflora,is typical of one of South-East Asian tropical rainforest and rare plants,its unique"plate root phenomenon"reflects the Tetrameles nudiflora is more prominent in the limestone geological formation environment adaptability,is one of the tropical rain forest trees representative of the iconic.In lixianjiang River basin the Longma,Jufudu and gelantan hydropower hydropower after the restoration process,the Tetrameles nudiflora as one of the primary cutting and planting of tree species of rare plants,with a variety of native and rare plants and cross-planting of native trees,and rare plant communities within the study and practice of watershed restoration measures.Research Group sincethe beginning of 2008 5 June at the basin collect seed breeding,then startingfrom the second year,one after another in longma hydropower station,Jufudu hydropower station,as well as implementing planting and tending to a forest of gelantan hydropower station.Tetrameles nudiflora in the more vulnerable seedling stageand prone to snapping.After artificial cultivating seedling in lixianjiang River basin habitat conditions adapted to strong and rapid growth and survival rates of up to 90%per cent.In addition,the planting site selection on Tetrameles nudiflora and whether growth is also critical,interference factors are human and livestock.