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Sci Rep:云南大学青年学者发表湖泊洲滩植被演替研究成果

摘要 : 2016年11月10日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了云南大学生态学与环境学院谢永红研究员的一篇研究论文

 2016年11月10日,国际学术权威刊物自然出版集团旗下子刊《Scientific Reports》杂志在线发表了云南大学生态学与环境学院谢永红研究员的一篇研究论文,研究报道了关于湖泊洲滩植被演替的研究成果。青年教师潘瑛博士为论文第一作者。

湖泊洲滩是湖泊生态系统的重要组成部分,对维持湖泊生态系统功能,如生物多样性保护、污染控制、水土保持等方面意义重大。湖泊洲滩有湖滨洲滩和湖心洲滩两种主要类型。潘老师抓住当前对湖心洲滩研究很少的机会,选准几乎无人涉及的湖心洲滩演替机制问题,采用空间代替时间的方法,探讨了洲滩演替进程中泥沙淤积过程、土壤转化过程及植被演替过程,并揭示了三者之间的相互联系。本研究成果为全面认识湖心洲滩的形成过程、开展生态修复、增强湖泊环境功能提供了重要科学资料。

原文链接:

Effects of sedimentation on soil physical and chemical properties and vegetation characteristics in sand dunes at the Southern Dongting Lake region, China

原文摘要:

Sedimentation is recognized as a major factor determining the ecosystem processes of lake beaches; however, the underlying mechanisms, especially in freshwater sand dunes, have been insufficiently studied. To this end, nine belt transects from nine freshwater sand dunes, classified into low (<23.7 m), medium (25.4–26.0 m), and high-elevation groups (>28.1 m) based on their elevations in 1972, were sampled to investigate differences in sedimentation rate and soil and vegetation characteristics in Southern Dongting Lake, China. Sedimentation rate, soil sand content, and soil pH increased, wheras soil clay, fine silt, moisture (MC), organic matter (OM), total N, and total K content, in addition to the growth and biodiversity of sand dune plants generally decreased with decreasing belt transect elevation. Regression analyses revealed that the negative effects of sedimentation on the ecosystem functions of sand dunes could be attributed to higher fine sand content in deposited sediments and stronger inhibition of plant growth. These results are consistent with previous studies performed in coastal sand dunes, which highlights the importance of sedimentation in determining ecological processes.

来源: Scientific Reports 浏览次数:0

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