山西天龙山植被及植物资源

采用TWINSPAN对天龙山主要植被进行了分类 ,并用DCA方法分析了植物群落间的生态关系 ,描述了九个主要植物群落类型的特征 ,最后介绍了蕴藏于植被中的天然植物资源的类型及其经济用途 ,提出了植物资源开发利用的对策。

A STUDY ON VEGETATION RESOURCES IN TIANLONG MOUTAIN, SHANXI PROVINCE

It is a scientific basis of rational development of mountain region to study the ecological relationships between vegetation communities and plant resources. Vegetation communities in Tianlong mountains of Shanxi province are analyzed by use of Two_way Indicator Species Analysis (TWINSPAN) in this paper, and nine plant community types are recognized and their characteristics are described. Secondly, their ecological relationships are given out by means of Detrended Correspondence Analysis (DCA). The first ordination axis of DCA shows the variation of humidity on which communities depend, that is, it decreases gradually from left to right. The second axis illustrates the gradient of temperature, that is, it rises slowly from the bottom to top of the mountains. And from right top to left bottom, i.e. along the diagonal of DCA ordination map, elevation rises gradually. At last the features of eight types of wild plant resources and the strategies for their rational utilization and protection are discussed.