中卫山羊核心产地种子植物生活型和区系地理特征

对中卫山羊的核心产区——宁夏香山荒漠草原区的植物物种生活型和区系地理特征进行初步统计，结果表明所有调查的种子植物区系组成具有明显的温带性质，并且植物区系地理成分组成的脆弱性是本地植物区系的显著特点。植物生态、生活型中以地面芽植物、旱生及一年生植物较多，体现了干旱环境、山地微地形及长期的放牧干扰下物种种系发育的特征。

Characteristics of Plant Life Form and Floristic Geography in the Core Producing Area of Zhongwei Goat, Ningxia

Plant life form and floristic geography were studied in the core region of Zhongwei goat (a special goat for their fur in the world).The result showed that characteristics of all flora deve-(lopment) embodied the action of the droughty environment.The floristic element of flora was very vulnerable,and the most species was temperate element.Plants of hemicryptophyte,droughty types and ephemeral plant were most,what reflected coefficient of several factors including droughty environment,microrelief of mountainous area and the long-term disturbance of grazing.