桃儿七分布格局与生态适应的初步研究

以云南产桃儿七Ｓｉｎｏｐｏｄｏｐｈｙｌｌｕｍ ｈｅｘａｎｄｒｕｍ（Ｒｏｙｌｅ）Ｙｉｎｇ为研究材料，分析了它的分布格局及生态适应。指出桃儿七是一个分布范围较广、生态适应幅度大的物种；在分布区内它主要出现在具有次生植被的山谷中，个体在居群内的分布格局，由于受到放牧活动的影响而呈聚群式分布，植株常出现在灌木丛下和树根附近。它适应夏秋湿润凉爽，冬季及早春寒冷干燥的气候条件，并具有相应的生长与发育节律。人类

PRELIMINARY STUDIES ON THE DISTRIBUTION PATTERN AND ECOLOGICAL ADAPTATION OF SINOPODOPHYLLUM HEXANDRUM (ROYLE) YING (BERBERIDACEAE)

Based on the observation of samples in Zhongdian, Yunnan Province together with the reference of other region's studing results,the distribution pattern and ecological adaptation of Sinopodophyllum hexandrum has been analysed. As a results, the paper states out that Sinopodophyllum hexandrum has a wide distribution region and ranges a wide ecological environments. However, in its distribution region, it mostly appears in va11eys with secondary vegetation. In the population, the plant shows a kind of clumping distribution pattern because of grazing, individual plant is mostly observed growing under shrubs or around tree trunks.It has adaptated the weather of cool and moist in summar, but dry and frigid in winter and early spring and has developed a series of adaptation mechanism such as growing rhythm. Morphological polymorphism is extremely conspicuous, this should be considered the results of its adaptation of various environments. Human being' s social activities are taking an important affection on the distribution pattern of Sinopodophyllum hexandrum.