湖南省中方县康龙自然保护区种子植物资源调查

Investigation on seed plant resources in Zhongfang County Kanglong Nature Reserve of Hunan Province

2022年3月—2023年3月,为探究湖南省中方县康龙自然保护区种子植物的分类及其分布特征,采用样线调查法结合文献整理的方式对该区现有种子植物进行识别和分类。结果表明:中方县康龙自然保护区共有野生种子植物179科772属1962种。保护区内裸子植物较为匮乏,共计6科9属13种。被子植物共计173科763属1949种,其中禾本科和菊科的种数最多。保护区共发现国家重点保护野生植物26种,国家珍稀濒危植物29种。区系分析表明:该区种子植物属的分布范围最多的是泛热带分布(19.46%),其次是北温带分布(14.27%)和东亚分布(12.06%),保护区植物的泛热带性较为明显。相似性指数分析表明康龙保护区与邻近地区关系密切,相似百分率均超过60%,其中与鹰咀界和佼木溪相似性达84.96%和83.07%。通过全面调查康龙自然保护区的种子植物资源,为该保护区的野生植物保护及植物种质资源的保护和利用提供了数据支撑。

From March 2022 to March 2023,in order to explore the classification and distribution characteristics of seed plants in Zhongfang County Kanglong Nature Reserve of Hunan Province,the existing seed plants were identified and classifiedin this area by means of field investigation and literature collation.According to the findings,there were 772 genera and 1962 families worth of wild seed plants in the Kanglong Nature Reserve.The gymnospermaes only make up 6 families,9 genera,and 13 species in the reserve.The angiosperms comprised 1949 species in 763 genera and 173 families,with the Poaceae and Asteraceae groups having the most species overall.The reserve had 29 kinds of rare and endangered plants in addition to 26 species of nationally significant wild plants.The pantropical nature of the plants in the reserve was more apparent,which revealed that the distribution range of seed plant genera in the area was most pantropical(19.46%),followed by north temperate distribution(14.27%)and East Asian distribution(12.06%)according to the flora analysis.With similarity percentages above 60%,including 84.96%and 83.07%with Ying Zuijie and Jiao Muxi,the similarity index analysis revealed that the Kanglong Reserve was strongly related to its surrounding areas.This study comprehensively investigated the seed plant resources in Kanglong Nature Reserve,and also provided data support for the protection and utilization of wild plants and plant germplasm resources in this area.