...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Estuarine Coastal and Shelf Science >The range expansion patterns of Spartina alterniflora on salt marshes in the Yangtze Estuary, China
【24h】

The range expansion patterns of Spartina alterniflora on salt marshes in the Yangtze Estuary, China

机译：长江口盐沼上互花米草的范围扩展模式

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The range expansion patterns of Spartina alterniflora and the roles which sexual reproduction and asexual propagation play in range expansion were investigated at the Chongming Dongtan nature reserve in the Yangtze Estuary, China. Two range expansion patterns of S. alterniflora at its advancing fronts could be found (1) S. alterniflora-mudflat front (S-M) and (2) S. alterniflora-Scirpus mar-iqueter-mudflat front (S-S-M). One feature revealed by this study was that a flush of seedling recruitment and establishment in spring was a crucial way for S. alterniflora to colonize new habitats and achieve a fast rate of range expansion. The mean number of seedlings recruited at the S-M front was much higher than that at the S-S-M front. Once established, the survivorship of seedlings was high, both at the S-M and S-S-M fronts. The established seedlings formed new tussocks quickly by vegetative tillering and growth of rhizomes and these finally merged into dense meadows. The mean distance of range expansion of S. alterniflora, after one growing season at the S-M front, was 25.4 ±3.1 myr~(-1) and 2.7±0.5myr~(-1) at the S-S-M front. Sexual reproduction by seedlings and asexual propagation by tillering and growth of rhizomes were the two main means by which S. alterniflora could maintain a fast rate of range expansion on the salt marshes of the Yangtze Estuary. The colonization behaviors of S. alterniflora on advancing fronts differed as a reaction to various external and internal factors. The impact of abiotic and biotic factors governing the range expansion of S. alterniflora and its implications for the spatial structure of tidal wetlands are discussed.
机译：在长江口崇明东滩自然保护区，研究了互花米草的范围扩展模式以及有性繁殖和无性繁殖在范围扩展中的作用。可发现互花米链菌在其前进前沿的两个范围扩展模式（1）互花米链菌-泥滩前（S-M）和（2）互花链球菌-Scirpus mar-iqueter-泥滩前（S-S-M）。这项研究揭示的一个特征是，春季春季募集并建立苗木是互花米草定居新栖息地并快速扩大范围的关键途径。在S-M前沿招募的平均幼苗数量远高于在S-S-M前沿招募的幼苗。一旦建立，在S-M和S-S-M前沿的幼苗存活率很高。成熟的幼苗通过根茎的营养分till和生长迅速形成了新的丛，并最终合并成茂密的草地。互花米链霉菌在一个生长期经过S-M锋线后，其范围扩展的平均距离为25.4±3.1myr〜（-1）和S-S-M锋线为2.7±0.5myr〜（-1）。幼苗的有性繁殖以及根茎分till和生长的无性繁殖是互花米草可以在长江口盐沼上维持较快的范围扩展的两种主要手段。由于对各种外部和内部因素的反应，互花米草的定殖行为有所不同。讨论了控制互花米草范围扩展的非生物和生物因素的影响及其对潮汐湿地空间结构的影响。

著录项

  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第1期|P.99-104|共6页
  • 作者

    Derong Xiao; Liquan Zhang; Zhenchang Zhu;

  • 作者单位

    State Key Laboratory of Estoarine and Coastal Research, East China Normal University, 3663 Zhongshan Road North, Shanghai 200062, China;

    State Key Laboratory of Estoarine and Coastal Research, East China Normal University, 3663 Zhongshan Road North, Shanghai 200062, China Shanghai Key Laboratory of Urbanization and Ecological Restoration, East China Normal University, 3663 Zhongshan Road North, Shanghai 200062, China;

    State Key Laboratory of Estoarine and Coastal Research, East China Normal University, 3663 Zhongshan Road North, Shanghai 200062, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    spartina alterniflora; spreading rate; seedlings; asexual reproduction; salt marshes; yangtze estuary;

    机译：互花米草;传播率;幼苗;无性繁殖;盐沼;长江口;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号