黔西北高原药用植物区系的初步研究

A study on the strain of the medicinal plants in plateau north-western Guizhou

本文论述了黔西北高原药用植物的种类组成与区系特征,并分析了它们的分布特点。该区药用植物资源丰富,共有196科,672属,1474种(含种下等级)。其中,古老和原始的科、属不乏其代表。从药用种子植物属的分布区类型的比较分析,该区具有我国15个种子植物属的分布区中的全部类型,表明了与世界各地区植物区系的联系程度。另一方面,该地区的植物区系虽含有丰富的热带成分,但明显偏重于温带性质,这种温带性质可能与该区的地理位置与海拔高度有着重要的联系。

The Plateau north-westcrn Guizhou in west Guizhou is situated at 25°19′——27°46′ N. latitude, 103°36′——106°43′E. longitude. The total area of the Plateau is about 30060 km^2. The resources of medicinal plants in the Plateau are rich. They belong to 1474 species (including the grades under species), 672 genera, 196 families (see Table 1). Accordingto the comparative analysis of distribution areas of 581 genera of seed medicinal plants in the Plateau, 15 distribution types can be recognized as shown in Table 3 (15 distribution types in China). As shown in Table 3, the flora of the Plateau is obviously temperate in nature, with abundant tropical elements. The amount of temperate genera in the items 8—11,13 and 14(see Table 3) is 293, being 55.18%, of the total (excluding cosmopolitan, the same below), While that of tropical genera from the items 2—7 is 215, being 40.49% of the total.