永瓣藤濒危因素探讨

CAUSES OF THREAT TO SPECIES MONIMOPETALUM CHINENSE REHD

摘要:

水瓣藤（MonimopetalumchinenseRehd．）是卫矛科（Celastraceae）的一个单种属植物，被列为国家二级珍稀濒危保护树种。永瓣藤濒危的因素主要是：（1）种子萌发障碍;（2）传粉受精不良，胚珠通常败育，结实率偏低;（3）种子成熟后胚因休眠或失水而失活；（4）人类活动对自然生态环境的严重干扰和破坏。本文提出了消除威胁生物多样性的社会因素、加强亚热带阔叶林生态系统的保护、重视自然保护区以外的就地保护工作、深入研究迁地保护的有效方法等保护策略。

Abstract:

An investigation of endangered monotypic species Monimopetalum chinense (Celastraceae) was carried out in Jiangxi Proyince during recent years. The factors that caused this species endangered can be focused on (1) the obsctruction in seed germination due to solid seed coat; (2) poor pollination and ovule-obortion; (3) embryo dormancy or dehydration after maturing of the seeds; and, (4) serious environmental disturbance by human factors. Some suggestions for the conservation of the species are made.