白水江自然保护区位于甘肃最南部的文县、武都两县境内,气候温和,雨量充沛,植物资源十分丰富,是我省以保护大熊猫为中心的国家级重点保护区之一,也是我省珍贵树种——珙桐唯一的种源地和基因库。一九八二年,武都地区曾组织科技人员对保护区的珍贵树种进行过调查,但与笔者调查结果出入较大,特别是濒灭树种和危灭树种。为了较真实的反映白 Baishuijiang Nature Reserve is located in the county of Wensu and Wudu in the southernmost part of Gansu. It has a mild climate, abundant rainfall and rich plant resources. It is also one of the national key protected areas that protect giant pandas in our province Provincial precious species - Davidia only provenance and gene pool. In 1982, scientific and technological personnel were organized in the Wudu area to conduct surveys on the precious tree species in protected areas, but the findings of the survey were quite different from those of the author, especially the species of endangered species and the species of endangered species. In order to reflect more real white