井冈山大学学报（自然科学版）Issue(6)：100-106,7.DOI:10.3969/j.issn.1674-8085.2013.06.022
特有濒危植物长柄双花木濒危原因及其保护对策
ENDANGERING REASONS AND CONSERVATION STRATEGY OF DISANTHUS CERCIDIFOLIUS VAR. LONGIPES, AN ENDEMIC PLANT TO CHINA
摘要
Abstract
Disanthus cercidifolius var. longipes, a plant species that only occurs in a few counties in Hunan, Jiangxi, Zhejiang and Guangdong Provinces and with relatively small numbers of individuals, is recorded as the 2nd Class endangered species for conservation in China. In this paper, the geographical distribution, community features, biological traits, reproductive ecology features and the endangering reasons of D. cercidifolius var. longipes are reviewed and analyzed. The endangering reasons of this species may be summarized as follows:Firstly, pollen and resource limitations to lifetime seed production, pollen competition, shortage of pollinators, and deficiency of organic nutrient may be the major factors leading to the endangered status of D. cercidifolius var. longipes. Secondly, there exist some barriers of its seed germination in natural conditions, which lead to the low germination rate and few seedlings. Thirdly, there are few ramet in its natural populations, because the clonal reproduction ability of this species is limited. Additionally, habitat loss, fragmentation and serious human disturbance lead to the number of populations declines directly and the individuals are difficult to regenerate. Moreover, some effective strategies for conservation of this species are discussed from the aspects of scientific research and conservation approach.关键词
特有植物/濒危原因/保护对策/长柄双花木Key words
endemic plant/endangering reason/conservation strategy/Disanthus cercidifolius Maxim. var. longipes H. T. Chang分类
农业科技引用本文复制引用
李晓红,曾建军,周兵..特有濒危植物长柄双花木濒危原因及其保护对策[J].井冈山大学学报（自然科学版）,2013,(6):100-106,7.基金项目
国家自然科学基金项目(30560025)；江西省自然科学基金项目(2010GZN0129)；生物学江西省高校高水平学科 （30560025）
