中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 破碎生境中种群大小对缙云卫矛生殖成功的影响 生态学杂志 2013,32 (4) 821-824
Position: Home > Articles > Effects of population size on reproductive success of endangered plant Euonymus chloranthoides Yang in fragmented habitat Chinese Journal of Ecology 2013,32 (4) 821-824

破碎生境中种群大小对缙云卫矛生殖成功的影响

作  者：
胡世俊;何平;张春平;张益锋
单  位：
西南大学生命科学学院;西南林业大学林学院国家林业局西南地区生物多样性保育重点实验室
关键词：
小种群;濒危植物;种群坐果率
摘  要：
生境破碎导致种群大小的降低,了解种群大小对生殖成功的影响对物种保护具有重要的指导意义。缙云卫矛(Euonymus chloranthoides Yang)为重庆特有濒危植物,目前缙云卫矛种群已遭受了严重的生境破碎,种群小且多处于隔离状态。本文对位于重庆北碚的该物种6个种群的生殖成功进行了研究。结果表明:小种群的自然坐果率低,种群间坐果率差异极显著(P=0.002);种群大小与坐果率之间呈显著相关(r=0.837,P=0.038);种群大小与种群幼苗比例呈显著相关(P=0.045),较小的种群中一龄级幼苗的比例也较小。这表明生境破碎后小种群不利于该物种的生殖成功,导致小种群的坐果率与幼苗比例降低。对该物种的保护要提高小种群的座果率,改善小种群的更新。
译  名：
Effects of population size on reproductive success of endangered plant Euonymus chloranthoides Yang in fragmented habitat
作  者：
HU Shi-jun1, HE Ping2**, ZHANG Chun-ping2, ZHANG Yi-feng2 (1Key Laboratory of Biodiversity Conservation in Southwest China (State Forestry Administration), Faculty of Forestry, Southwest Forestry University, Kunming 650224, China; 2Life Science Faculty, Southwest University, Chongqing 400715, China).
关键词：
small population; endangered plant; population fruiting rate
摘  要：
Habitat fragmentation can cause the decline of population size. To understand the effects of population size on reproductive success is of significance in species conservation. Euonymus chloranthoides Yang is an endemic and endangered plant in Chongqing of Southwest China. At present, the E. chloranthoides population has suffered from severe habitat fragmentation, with small population size and mostly in isolate status. In this paper, six E. chloranthoides populations at Beibei in Chongqing were selected to study the effects of population size on their reproductive success. Smaller populations had a lower natural fruiting rate, and the differences in the fruiting rate among the six populations were extremely significant (P=0.002). There was a significant correlation between the population size and fruiting rate (r=0.837, P=0.038). The population size had a significant correlation with population’s seedling ratio (P=0.045), and the first age-class seedling ratio of the smaller populations was also smaller. The present study indicated that habitat fragmentation induced the decrease of the fruiting rate and seedling ratio of smaller populations of E. chloranthoides, which was not beneficial to the reproductive success of the plant species. Therefore, to conserve the E. chloranthoides, it would be necessary to enhance the fruiting rate of the small populations and improve their regeneration.

相似文章

导出引用
计量
文章访问数: 12
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46