首页关于本刊影响因子及获奖投稿须知订阅及广告专辑与专题学术会议绿色发表通道优秀论文 
说明:
此论文已被《生态学报》录用,现已优先出版,可查看文章PDF版本!
杨立荣,张治礼,云勇,严武平,陈宣,张浪,郑道君,陈加利.濒危植物海南龙血树的种群结构与动态.生态学报,2018,(8).http://dx.doi.org/10.5846/stxb201708071415  
濒危植物海南龙血树的种群结构与动态
The population structure and dynamics of Dracaena cambodiana, an endangered tree on Hainnan Island
投稿时间:2017-08-07  修订日期:2017-12-05
DOI: 10.5846/stxb201708071415
关键词海南龙血树  年龄结构  种群动态指数  存活曲线  生存函数
Key WordsDracaena cambodiana  age structure  population dynamic index  survival curve  survival function
基金项目国家自然科学基金项目(31360071)、海南省重点研发计划项目(ZDYF2016179)资助
作者单位E-mail
杨立荣 海南省农业科学院热带园艺研究所 haidi1985 @126.com 
张治礼 海南省农业科学院热带园艺研究所  
云勇 海南省农业科学院热带园艺研究所  
严武平 海南省农业科学院热带园艺研究所 ywp1734@163.com 
陈宣 海南省农业科学院热带园艺研究所  
张浪 海南省农业科学院热带园艺研究所  
郑道君 海南省农业科学院热带园艺研究所 daojunzh @163.com 
陈加利 海南省农业科学院热带园艺研究所  
摘要点击次数 612
全文下载次数 145
摘要:
了解种群的生存现状与动态趋势对濒危植物的保护至关重要。为了更好地保护濒危海南龙血树种群,本文对海南岛不同生境的11个海南龙血树(Dracaena cambodiana)种群进行了调查;并利用个体基径数据建立各种群的年龄结构和静态生命表,得到种群年龄结构动态指数,绘制种群存活曲线和生存函数曲线,从而获得海南龙血树的种群结构与动态。结果表明:海南龙血树种群年龄结构与种群所处的生境关系密切,海边的NS和YL种群结构为衰退型,LN和CH居群为稳定型,而非海边种群为增长型,没有老龄个体;11个种群中,EXL种群显示出最高的增长趋势和最好的种群稳定性,NS和YL种群稳定性最差,种群抗干扰能力极低;11个种群的存活曲线均属于Deevey-Ⅰ型,但生存函数分析显示海南龙血树种群生活史早期和晚期脆弱,中期稳定,这表明海南龙血树种群所处的生境更适合成年个体生存,现有的生境对幼龄个体的环境筛作用较强。海南龙血树属于退偿物种,针对其种群的生存现状,应采取多种方法相结合的方式进行保护与复壮。
Abstract:
For the protection of an endangered plant, it is very important to understand its population survival status and population dynamics. In order to better protect the rare and endangered Dracaena cambodiana, 11 populations of D. cambodiana in different habitats on Hainan Island were investigated, and the basal diameter of individuals was recorded to establish age structure and static life table, and then the population age structure dynamic index and the survival curve and survival function curve, so as to determine the population structure and survival status of D. cambodiana. The results showed that the population age structure of D. cambodiana is closely related to its habitat. Populations in habitats near sea, NS and YL, were declining, whereas those of CH and LN were stable, and the other 7 populations farther from the sea were increasing. Among these 11 populations of D. cambodiana, the EXL population showed the highest growth trend and the best stability. JFM, JF, CH, and LN populations also showed a growth trend and good stability, whereas NS and YL populations showed the worst stability and anti-interference ability[Plea anti-interference ability se check this expression. The meaning of "anti-interference ability" is a little unclear. The survival curve of the 11 D. cambodiana populations were of a Deevey-I (convex curve) type, and the survival rate of young individuals was higher than that of middle-aged and aged individuals, indicating that the survival ability of young individuals is better than that of middle-aged and aged individuals. However, the results of survival function analysis showed that the early and late life history of D. cambodiana were fragile, whereas that of middle aged was stable, suggesting that the habitat of D. cambodiana was more suitable for the survival of middle-aged individuals, and that the young individuals were under strong effects of environmental filtering. D. cambodiana is a depensation species, and therefore multiple protection methods should be used to protect and rejuvenate the current populations.
HTML 查看全文   查看/发表评论  下载PDF阅读器

您是本站第 69924592 位访问者

Copyright © 2005-2019   京ICP备06018880号
地址:北京海淀区双清路18号
  邮编:100085    电话:010-62941099
  E-mail : shengtaixuebao@rcees.ac.cn
本系统由北京勤云科技发展有限公司提供技术支持