甘肃省国家重点保护野生植物资源分布特征及现状

Distribution Characteristics and Current Situations of National Key Protected Wild Plant Resources in Gansu Province

为了解甘肃省国家重点保护野生植物资源组成、分布规律、濒危程度和保护状况,加强甘肃省国家重点保护野生植物资源的保护,采用文献调查法、访问调查法和实地调查法,对甘肃省现存的国家重点保护野生植物资源进行统计与分析。结果表明,甘肃省生态区位重要,国家重点保护野生植物有23科25属26种,占全国国家重点保护野生植物资源的6%;水平分布极不均匀,南北差异较大,陇南山地分布最多,其次是河西走廊及北山山地,陇中和陇东黄土高原地区较少,甘南高原和祁连山山地没有分布;54%的种群分布频度小于3,31%的种群现存多度小于250株;绝大部分国家重点保护野生植物处于不同程度的保护状态,仅有2种处于未保护状态。甘肃省内的国家重点保护野生植物普遍存在分布范围狭窄、自然栖息地破碎及种群结构不合理等问题,种群退化加剧,个别种群面临消亡的威胁。需在继续加强严格保护的同时,加大科研力量的投入,积极发展人工种群。

In order to understand composition,distribution rule,endangered degree and conservation status of national key protected wild plant resources and strengthen protection of national key protected wild plant re⁃sources in Gansu province,national key protected wild plant resources in Gansu province were calculated and analyzed by using literature review,interview and field survey methods.Results showed that there were 23 fami⁃lies,25 genera and 26 species of national key protected wild plants in Gansu province,accounting for 6%of na⁃tional total.Distribution was extremely uneven with a large difference between north and south.It was mainly distributed in Longnan Mountains,followed by Hexi Corridor and Beishan Mountains,Loess Plateau had less,and Gannan Plateau and Qilian Mountains had no distribution.54%of population distribution frequencies were less than 3,and 31%of population abundance were less than 250.Most of national key protected wild plants were in protection to some extent,and only 2 species were in unprotected state.National key protected wild plants in Gansu province had a narrow distribution range,fragmented natural habitats,unreasonable population structure,population degraded severely,and some population had extinction threat.Strict protection should be strengthened,and investment in scientific research should be increased to develop artificial population.