江西“三草”的性质与开发利用

THE CHARACTER AND EXPLOITATION OF THREE TYPES OF HERBACEOUS PHYTOCOENOSIUM IN JIANGXI

草洲(草甸)是典型的非地带性植被。草山(山顶灌木草丛)和草坡(荒山灌木草丛)是我国独有的、在严重人为干扰下森林植被逆向演替的产物和半地带性的、相对稳定的植被类型。但二者在区系、外貌、动态及经济利用的现状和方向等方面均有明显的本质区别。

There are three types of herbaoeous phytocoenosium in the eastern subtropical areaof China, namely, grasshill, grass-slope and grass-sandbar. The grass-sandbar (meadow,prata) is a typical intrazonational vegetation. The grass-slope (waste grasshill fruticeta-her-bosa) and grasshill (hilltop fruticeta-herbosa) are the outcome of forest vegetation regressivesuccession peculiar to China with much human interference, they are semizonational and rel-ative stable types. But there are an obviously essential distinction between this two types inecology, flora, physiognomy, dynamic, economic usage, developing trend and in some other respects.