长白山高山冻原植物群落的数量分类和排序

本文用目前在国际上比较先进的双向指示种分析(TWINSPAN)多元等级分划分类方法和无趋势对应分析(DCA)排序方法对长自山高山冻原植物群落进行了研究。研究结果表明:DCA的第2轴与长白山高山冻原59个植物群落类型的土壤水分梯度紧密相关, TWINSPAN将长白山高山冻原59个植物群落分为12组。此外, 本文还对长白山高山冻原植物群落的TWINSPAN和DCA分类结果与经典分类方法对其分类的结果进行了比较。

Numerical classification and ordination of plant communities in the alpine tundra of Mt. Changbai

In this paper, the plant communities in aJpine tundra of Mt. Changbai were studied using the methods of DCA ordination (DECORANA program)and TWINSPAN polythetic hierarchical divisive classification (TWINSPAN program).The results show that 59 types of plant communities in the alpine tundra of Mt.Changbai were basically arranged along a soil-water gradient of the second axis in DCA ordination and could be classified into 12 groups by TWINSPAN. In addition, a comparison of the results by DCA and TWINSPAN and by traditional classification was made in this paper.