论树苗的定义

IF 1.9 4区 环境科学与生态学 Q3 ECOLOGY
Francesco Martini
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引用次数: 0

摘要

幼苗是植物招募过程中最关键的瓶颈,然而对于什么是幼苗还没有一个实际且被广泛接受的定义。通常,幼苗期的结束被定义为停止依赖种子资源的点,或者在最大生长速率的点。然而,这些定义对于基于实地调查的生态研究的应用是有限的。我分析了25年的文献和1766份出版物,首次对森林野外研究中如何定义乔木和灌木幼苗进行了定量评估。我统计了282种不同的幼苗定义,我发现24.4%的研究没有提供一个明确的定义。最广泛使用的定义是“新出现的”幼苗,其次是小于50厘米和小于100厘米高的个体。只有6.9%的研究引用了之前的研究来证明他们的选择是正确的。最常用的定义在热带和非热带研究之间,以及在单一物种和多物种研究之间通常是一致的。如果作者采取三个简单的步骤,可以帮助提高对幼苗含义的清晰度:(1)始终提供一个明确的幼苗定义,(2)参考以前的研究,(3)尽可能采用这里报道的最广泛使用的定义(即50厘米或100米高)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

On the definition of tree seedlings

On the definition of tree seedlings

Seedlings are the most critical bottleneck in plant recruitment, yet there is no practical and widely accepted definition of what a seedling is. Typically, the end of the seedling stage has been defined as the point when it stops being dependent on seed resources, or at the point of maximum growth rate. However, these definitions are of limited use for ecological studies based on field surveys. I analyzed 25 years of literature and 1766 publications to provide a first quantitative assessment of how tree and shrub seedlings are defined in forest field studies. I counted 282 unique definitions of seedlings, and I found that 24.4% of studies did not provide a clear definition. The most widely used definitions were “newly emerged” seedlings, followed by individuals less than 50 cm and less than 100 cm tall. Only 6.9% of the studies cited previous work to justify their choice. The most used definitions were generally consistent between tropical and extra-tropical studies, and between single versus multiple species studies. Three simple steps, if adopted by authors, could help to improve the clarity of what is meant by seedlings: (1) to always provide a clear definition of seedling, (2) to refer to previous studies, and (3) to adopt the most widely used definitions reported here (i.e., < 50 cm or < 100 m tall) whenever possible.

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来源期刊
Plant Ecology
Plant Ecology 环境科学-林学
CiteScore
3.40
自引率
0.00%
发文量
58
审稿时长
8.6 months
期刊介绍: Plant Ecology publishes original scientific papers that report and interpret the findings of pure and applied research into the ecology of vascular plants in terrestrial and wetland ecosystems. Empirical, experimental, theoretical and review papers reporting on ecophysiology, population, community, ecosystem, landscape, molecular and historical ecology are within the scope of the journal.
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