摘要
平当树是国家Ⅱ级重点保护植物,种群数量稀少,有关群落学和保护生物学研究尚处于空白。结合查阅相关文献和标本记录、实地调查和访问调查,对平当树的资源现状进行研究。结果表明,平当树间断分布于滇中北部、东北部、东南部、西北部及四川南部海拔280~1 500m干热河谷地区的稀树灌草丛中,滇东北金沙江流域为平当树分布较为集中的区域。由于种群分布区域狭窄、生境干热及人为活动影响,种群自然更新能力较差且种群结构不合理,使平当树面临较高的灭绝风险。因此,应加强平当树种质资源的就地保护和人工繁育工作。
Paradombeya sinensis Dunn is a Ⅱ-class of the national important protected wild plant with few populations and blank previous research in community and conservation biology. Current resource situation of P. sinensis Dunn was studied with relevant literature review,specimen records,field survey and interview. The result showed that P. sinensis Dunn distributed in savanna shrub of arid-hot valley at 280 - 1 500 m in north centre,northeast,southeast and northwest of Yunnan province and south of Sichuan province, separately. Moreover, P. sinensis Dunn lived relatively denser in the region of Jinsha River in northeast of Yunnan. Owing to the narrow distribution area,arid-hot habitat,human influence,poor ability of population regeneration and unbalanced population structure,P. sinensis Dunn was faced with high risk of extinction. Therefore,the in situ conservation of germplasm resource and artificial breeding for P. sinensis Dunn should be strengthened.
出处
《西部林业科学》
CAS
2017年第2期101-106,共6页
Journal of West China Forestry Science
基金
西南林业大学植物学校级重点学科建设项目"第二次全国重点保护野生植物资源调查(林护发(2012)87号)"
关键词
平当树
种群现状
地理分布
生物多样性保护
Paradombeya sinensis Dunn
population status
distribution
biodiversity conservation
作者简介
第一作者简介：马晨晨（1990-）,女,硕士,主要从事植物多样性研究.E-mail：hnchen1809@163.com
通讯作者简介：杜凡（1957-）,男,教授,硕士,主要从事植物学、竹类和生物多样性研究.E-mail：kmdufan@163.com
