广东特有国家保护植物丹霞梧桐资源调查与保护研究

Resource Survey and Protection of the Key National Protected Species Firmiana danxiaensis Endemic to Guangdong, China

通过对文献、网络资源数据库(植物志、标本平台、图像库等)和专著分析考证,结合全部产地的野外实地考察,对国家II级重点保护野生植物丹霞梧桐(Firmiana danxiaensis)的分类学地位与形态特征、产地与生境、标本记录、研究进展及致危因素等进行综述,以期为该物种的保护提供科学依据。自1986年在广东仁化丹霞山采到模式标本和1987年命名丹霞梧桐以来,至今已过去30多年,其记录范围从最初的仁化县丹霞山,2014年扩展到南雄市全安镇和古市镇,再到2019年新记录的英德市英城镇和横石塘镇,生境也从丹霞地貌特有扩展至与石灰岩地貌共有。丹霞梧桐种群的保护需综合就地保护、迁地保护,以及加强科学研究等措施。

Based on analysis of references,network resource databases(including flora,specimen,and pictures),and also the field survey on all of the wild survival sites,the taxonomic status and morphological characteristics,places of origin and habitats,specimen records,research advances,and the endangered factors of the key national protected grade II plant Firmiana danxiaensis,were summarized in this paper,so as to providing scientific basis for its protection.There have been more than 30 years since the type specimen was collected in 1986 and named in 1987 first found in Danxia Mountain,Renhua County,Guangdong Province in China.According to the research,its areal range were enlarged from endemic to Danxia Mountain,Renhua County,to Quan’an Town and Gushi Town,Nanxiong City in 2014,and then to Yingcheng Town and Hengshitang Town,Yingde City in 2019.The habitats had enlarged from Danxia landform to limestone landform.All protection measures such as in situ and ex situ conservation,and more studies on this species should be combined for its effective protection.