长白山高山冻原种子植物的调查

通过多次对长白山高山冻原的实地考察,统计得到冻原种子植物共计34科、94属、146种,有6种属的分布区类型(包括3个变型),北温带分布类型最多,占总属数的68.09%。在整个冻原上,草本有125种,占总数的85.62%,其中多年生草本124种。高山冻原植物中具有多种生态,生理适应方式,低矮平卧状植株、极矮小草本、密集丛生是植物的重要适应方式,细长密集须根是冻原上主要的适应方式,占植物总数的54.94%。果实中干果共计137种,其中蒴果56种。由于高山冻原上生态环境十分残酷,极易受人为因素的影响。

Investigation of the alpine tundra seed plants in Changbai Mountain

Seed plant diversity of alpine tundra of Changbai Mountain has been studied based on herbarium and literature records and field investigations. There are 146 seed-plants on the alpine tundra of Changbai Mountains. They are grouped into 94 genera and 34 families. The areal-types of genera have been analyzed. 68.09% of genera belong to the north temperate distribution pattern. The ecoclimatic adaptation in both morphology and physiology of the tundra plants was also investigated. Herbs are dominant in this alpine tundra including 124 perennial herbs. Low and trailing plants, cluster plants,extreme low herb,rhizoma,well developed fleshy or ligneous roots and dominant dehiscent fruits are the important character of the typic alpine tundra which demonstrate the well coevolution between the plants and environment. Meanwhile,the use of the plant resources on tundra has been discussed. Some advices on conservation of the fragile ecosystem of alpine tundra and using the plant resources properly have been suggested.