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The use of open-top chambers in forests for evaluating warming effects on herbaceous understorey plants

机译：在森林中使用敞开式隔间评估对草本下层植物的变暖影响

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摘要

Open-top chambers (OTCs) are widely used experimental warming devices in open-field ecosystems such as tundra and alpine heath. However, knowledge of their performance in temperate deciduous forest ecosystems is largely lacking. The application of OTCs in forests might become important in the future since the effects of climate warming on growth, reproduction, and future distribution of understorey forest herbs have rarely been investigated. Therefore, polycarbonate OTCs covered with (OTCs + GF) and without permeable polypropylene GardenFleece (OTCs-GF) were installed in a temperate deciduous forest to create an experimental warming gradient. Short-term responses in phenology, growth, and reproduction of a model understorey forest herb (Anemone nemorosa L.) to OTC installation were determined. In a second growing season, an in-depth study of multiple abiotic conditions inside OTCs-GF was performed. Both OTCs + GF and OTCs-GF raised air and soil tempera-rnture in a realistic manner (ca. +0.4℃ to + 1.15℃), but OTCs-GF only in the leafless period (up to + 1.5℃ monthly average soil temperature). The early flowering forest herb A. nemorosa also showed a clear phenotypic response to OTC installation. Based on these facts and the large ecological drawbacks associated with OTCs + GF (mostly in connection with a higher relative air humidity and a lower light quantity) and very modest abiotic changes in OTCs-GF, we encourage the use of OTCs-GF in deciduous forest ecosystems for evaluating climate-warming effects on early flowering understorey forest herbs. There is also a potential to use this warming method on later flowering species, but this needs further research.
机译：开放式室（OTC）是在苔原和高山荒地等开放生态系统中广泛使用的实验升温设备。然而，在温带落叶森林生态系统中其性能的知识却十分缺乏。由于很少研究气候变暖对林下草本植物的生长，繁殖和未来分布的影响，因此在森林中应用OTCs在未来可能变得很重要。因此，将覆盖有（OTCs + GF）且没有渗透性聚丙烯GardenFleece（OTCs-GF）的聚碳酸酯OTC安装在温带落叶林中，以创建实验性的升温梯度。确定了模型下层森林草本（海葵Nemorosa L.）对OTC装置的物候，生长和繁殖的短期响应。在第二个生长季节，对OTCs-GF内部的多种非生物条件进行了深入研究。 OTCs + GF和OTCs-GF都以逼真的方式（约+ 0.4℃至+ 1.15℃）升高空气和土壤温度，但OTCs-GF仅在无叶期（每月平均土壤温度高达+ 1.5℃） ）。早期开花的森林草药A. nemorosa对OTC的安装也表现出明显的表型反应。基于这些事实，以及与OTCs + GF相关的巨大生态缺陷（主要是相对较高的相对空气湿度和较低的光量）以及OTCs-GF的非生物变化非常适度，我们鼓励在落叶环境中使用OTCs-GF森林生态系统，用于评估气候变暖对早期开花的林下草本植物的影响。在以后的开花物种上也有可能使用这种加温方法，但这需要进一步的研究。

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  • 来源
    《Ecological research》 |2010年第1期|163-171|共9页
  • 作者

    Pieter De Frenne; An De Schrijver; Bente J. Graae; Robert Gruwez; Wesley Tack; Filip Vandelook; Martin Hermy; Kris Verheyen;

  • 作者单位

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium Climate Impacts Research Centre, Department of Ecology and Environmental Science, Umea University, Box 62, 98107 Abisko, Sweden Department of Biology, NTNU, 7491 Trondheim, Norway;

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;

    Laboratory of Plant Ecology, Katholieke Universiteit Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium;

    Division Forest, Nature and Landscape, Katholieke Universiteit Leuven, Celestijnenlaan 200E, 3001 Leuven, Belgium;

    Laboratory of Forestry, Ghent University, Geraardsbergsesteenweg 267, 9090 Melle-Gontrode, Belgium;

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  • 正文语种 eng
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  • 关键词

    anemone nemorosa L.; climate change; experimental warming; herbaceous forest species; open-top chambers; wood anemone;

    机译：海葵气候变化;实验升温草本林种;开放式室海葵;

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