鸢尾属中国鸢尾系野生资源调查及濒危等级评估

Investigation and Endangered Grade Assessment of the Wild Resources of Iris Series Chinenses

摘要: 对鸢尾属(Iris)中国鸢尾系(series Chinenses)内的小鸢尾(Iris proantha)、粗壮小鸢尾(I. proantha var. valida)、长尾鸢尾(I. rossii)、小黄花鸢尾(I. minutoaurea)、朝鲜鸢尾(I. odaesanensis)、大巴山鸢尾(I. dabashanensis)的分布情况开展了系统性的野外调查，依据IUCN红色名录濒危物种评价标准对其濒危程度进行了评价。调查发现，小鸢尾分布在江南丘陵的北部，粗壮小鸢尾分布在浙江北部与安徽，长尾鸢尾与小黄花鸢尾分布在辽东半岛，朝鲜鸢尾只在吉林临江发现分布，大巴山鸢尾在重庆、湖北、陕西、甘肃均有分布。6个物种中，除朝鲜鸢尾外其余物种濒危等级均为无危(LC)，朝鲜鸢尾仅发现2个种群，总个体数不足600株，且有1个种群的生境正面临严重破坏，其濒危等级为极危(CR)。

Abstract: A systematic field investigation was conducted on the distribution of six species of the series Chinenses within the genus Iris, namely Iris proantha, I. proantha var. valida, I. rossii, I. minutoaurea, I. odaesanensis and I. dabashanensis. Their endangered status was assessed according to the IUCN Red List criteria. The investigation revealed that I. proantha is distributed in the northern part of the Jiangnan Hills; I. proantha var. valida is found in northern Zhejiang and Anhui; I. rossii and I. minutoaurea are distributed on the Liaodong Peninsula; I. odaesanensis is only found in Linjiang, Jilin Province; and I. dabashanensis is distributed across Chongqing, Hubei, Shaanxi and Gansu. Except for I. odaesanensis, all other species were assessed as Least Concern (LC). I. odaesanensis was found to have only two populations, with a total of fewer than 600 individuals, and one of the populations faces severe habitat destruction; therefore, its endangered status is assessed as Critically Endangered (CR).