陕西药用植物区系的研究

本文论述了陕西药用植物的种类组成,区系特征,并分析了它们的分布特点。1.陕西药用植物资源丰富,共有241科989属2278种(含种下等级,下同)。2.陕西药用植物具有相对的古老性,与华中亚热带区系有着千丝万缕的联系, 同时也有较多的年青成分,表现出明显的温带性特点。3.由于南北地质。地貌、土壤及气候等条件的差异, 决定了陕西药用植物分布上具有极不均匀的特点。4.陕西药用植物具有多种区系成分,它与川东一鄂西及华北地区联系最为密切。

A STUDY ON THE FLORA OF THE MEDICINAL PLANTS IN SHAANXI

This paper discusses the variety compositions and the flora features of the medicinal plants in Shaanxi, analyses their dispered characteristics.1. The resources of the medicinal plants in Shaanxi are rich. They belong to 2278 species(including the grades under species), 989genera, 241 families.2. The medicinal plants in Shaanxi have relatively ancient nature. Tbey have a thousand and one links with semitropic flora in middle China, at the time, they have younger compositions which shows characteristics of temperate zone nature.3. The distribution of the medicinal plants in Shaanxi is not even, because of the deferences in gelogy, landforms, soil and climatic conditions.4. The medicinal plants in Shaanxi have many flora compositions. They have closely relations with East Sichuan-West Hubei and northern parts of China.