湘西药用植物分布格局研究

摘要

This paper is to illustrate the medical plants distribution pattern and forming causes of Western Hunan, which could offer some advices for the proper utilization and protection based on local surveying and relevant reading. The distribution-type of tropical, subtropical and temperate of medicinal plants in western Hunan make up 45.35%, 98.55% and 43.63%, respectively. The dominated geographical plants is subtropical elements, the others temperate and tropical elements roughly equal. In the vertical direction, the medical plants distribution pattern conform to the Rapoport rule, that is to say species richness reduce after the first increase with elevation. In the horizontal direction, diversity of the medical plant species in northern area is higher than southern area.%通过调查湘西地区药用植物的地理分布格局及分析其成因,为湘西地区药用植物资源的合理开发和保护提供参考。基于实地考察与相关文献查阅的研究结果表明：热带、亚热带、温带分布型分别占湘西药用植物总数的45.35%,98.55%,43.63%,亚热带分布占绝对优势,温带和热带成分大致相当；在垂直方向上,药用植物分布格局符合植物垂直分布的Rapoport法则,即药用植物种类丰富度呈现出随着海拔升高先增加后降低的现象；在水平方向上,北部县域的药用植物物种多样性高于南部县域。