广西海岸潮间带草本植物群落的研究

【目的】探究广西海岸潮间带草本植物区系和群落类型,为广西滨海湿地的保护与利用提供参考依据。【方法】在广西海岸东段、中段及西段潮间带选择典型的地段作为研究样地,各段设置5~8个样地,采取样方法进行调查,记录组成种类和群落类型,分析植物区系成分,编制群落分类系统。【结果】广西海岸潮间带草本植物群落物种共有29种,隶属10科18属,莎草科、禾本科、水鳖科和丝粉藻科的种类较多;根据中国湿地植被的分类系统和分类原则,结合广西海岸的具体情况,将广西海岸潮间带草本植物群落划分为4个植被型和16个群系。【结论】草本植物科、属的区系成分简单,具有很明显的热带性;潮间带草本植物群落结构简单;高潮区和河口区分布的群落较多。

Research on the Herb Communities in the Intertidal Zone along Coast of Guangxi

[Objective] To explore the herb plants flora and the community types in the intertidal zone along coast of Guangxi, which would provide a reference for conservation and utilization of Guangxi coastal wetland. [Methods] In the intertidal zone of the eastern, middle, and western coasts of Guangxi, 5~8 plots were selected in each segment. Samples were taken for investigation. Then, we identified species and community types, analyzed the flora and compiled a community classification system. [Results] There were a total of 29 species recorded, belonging to 10 genus and 18 families in intertidal zone along coast of Guangxi. Among them, species of Cyperaceae, Gramineae, Hydrocharitaceae and Cymodoceaceae accounted for a larger proportion. Based on the classification principle and system of China wetland vegetation combined with specific environments of Guangxi coast, we divided the intertidal zone herb communities into 4 vegetation types and 16 formations. [Conclusion] Obviously, herb plants have tropical features and their flora of family with genera is sample. In addition, herb plants on community structure are also simple and most of communities distributed between the high tidal region and estuary.