我国极小种群野生植物长序榆(Ulmus elongate)的分布格局和群落调查  

Distribution pattern and community survey of Ulmus elongate, one of plant species with extremely small populations in China

作　　者：罗喻才 陈琳 彭巧华 杨光耀[1] 张文根[1] Luo Yucai;Chen Lin;Peng Qiaohua;Yang Guangyao;Zhang Wengen(Research Centre of the Protection and Utilization of Wild Animal and Plant, Jiangxi Agricultural University, Nanchang Jiangxi 330045, China;Jiangxi Guanshan National Nature Reserve Administration, Yifeng Jiangxi 330063, China)

机构地区：[1]江西农业大学.江西农业大学野生动植物保护与利用研究中心,江西南昌330045 [2]江西官山国家级自然保护区管理局,江西宜丰330063

出　　处：《南方林业科学》2018年第1期1-4,共4页South China Forestry Science

基　　金：江西官山国家级自然保护区极小种群调查专题(项目编号:20150828)

摘　　要：长序榆(Ulmus elongate),隶属于榆科(Ulmaceae)榆属(Ulmus),为我国Ⅱ级重点保护植物,是我国极小种群野生植物之一。本文通过对馆藏标本以及文献资料的整理,掌握长序榆在我国的基本分布情况;基于实地考察,分析长序榆的群落特征以及生态因子对其生长的影响。结果显示:1)长序榆主要分布在我国华东亚热带中、低海拔地区;2)该植物的采集标本较少,某些地区有文献记载而无标本采集记录;3)长序榆天然更新困难,生存环境脆弱。最后,结合标本和文献信息,绘制了该物种的分布图,并对其分布格局以及群落调查结果进行了讨论。As one of the nation Ⅱ-class protected plants, Ulmus elongate（Ulmaceae） is also one of plant species wit h extremely small populations in China. Through the investigation of collection status and literatures, the basic distribution of U. elongate in China was suggested. Based on field investigation, the influence of the population characteristics and ecological factor on the growth of U. elongate was analyzed. The results showed that U. elongate was mainly distributed in the subtropical medium-low altitude mountains in Eastern China. Specimen collection is not abundant; some have been documented but no specimen. The wild regeneration of U. elongate is difficult and its survival environment is fragile. Finally,based on the specimen and literatures, the distribution map of U. elongate was plotted, and its distribution pattern and community characters were discussed.

关 键 词：长序榆 地理分布 居群 极小种群野生植物 

分 类 号：S718.54[农业科学—林学]