【摘要】 目的：本研究旨在对陕西米仓山自然保护区有毒种子植物资源进行系统调查和研究，全面了解该地区有毒种子植物的种类、生活型、有毒部位、毒性成分、区系地理成分以及毒性大小等方面的信息。方法：运用点线结合、线路调查和随机调查的方法对保护区内有毒种子植物进行全面系统的调查。结果：陕西米仓山自然保护区有毒种子植物78科、179属、252种（含9变种）。保护区有毒种子植物生活型主要以草本植物为主，占总数的59.92%；有毒部位以全草或全株有毒居多，毒性大小主要以中等毒（有毒）为主；毒性成分以生物碱类化合物和苷（甙）类化合物为主，分别占总种数的21.83%和18.25%；分布区类型呈现多样性，科的分布区类型以世界分布型和泛热带分布型为主，属的分布区类型以北温带分布型和泛热带分布型为主。结论：陕西米仓山自然保护区有毒种子植物资源比较丰富，研究结果可为有毒种子植物的保护及开发利用提供科学依据。更多还原

【Abstract】 Objective: This study aimed to conduct a systematic survey and research on the toxic seed plant resources in the Micangshan Nature Reserve, Shaanxi Province, to comprehensively understand the species, life forms, toxic parts, toxic components, areal-types, and toxicity levels of these plants.Methods: A comprehensive and systematic survey of toxic seed plants in the reserve was conducted using point and line, line survey, and random survey methods. Results: A total of 78 families, 179genera, and 252 species(including 9 varieties) of toxic seed plants were identified within the reserve.Herbaceous plants were the predominant life from, accounting for 59.92% of the total species. The toxic parts were generally the entire plant or grass, and the toxicity level was primarily moderate. Alkaloids and glycosides were the main toxic components, accounting for 21.83% and 18.25% of the species, respectively. The areal-types of these plants were diverse, with family distributions mainly widespread and pantropical, and genus distributions predominantly North Temperate and pantropical. Conclusion:The Micangshan Nature Reserve in Shaanxi is relatively rich in toxic seed plant resources. The findings provide a scientific basis for the protection, development, and utilization of these toxic seed plants.更多还原