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首页> 外文期刊>Land Degradation and Development >Early response of Quercus robur seedlings to soil compaction following germination
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Early response of Quercus robur seedlings to soil compaction following germination

机译：昆虫抢劫幼苗对萌发后土壤压实的早期反应

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摘要

Logging operations using heavy machinery effect changes in soil characteristics due to compaction; such conditions can negatively influence seedling development. In stands managed on the basis of close-to-nature silviculture or continuous cover forestry, successful establishment of natural regeneration after logging is important to ensure the proper functioning of a forest ecosystem, to promote soil recovery, and to prevent and mitigate land degradation processes (such as soil erosion, mudflow, waterlogging, and landslides) related to soil compaction and rutting. This work aimed to assess the early response of Quercus robur seedlings to soil compaction during the first 1.5 months after germination. The study was carried out in a controlled environment using 8 L containers filled with natural alluvial soil. Three levels of soil compaction were applied in a laboratory using a compression-testing machine placed on the top surface of the soil in the containers. The morphological traits of the seedling shoot and root systems were analysed to compare 3 compaction levels. There were significant differences in seedling traits among the treatments, and they indicated that increasing levels of compaction reduced early seedling growth after emergence. Compaction had a larger impact on the root system, particularly the development at depth (root system depth, and main root length), compared with the shoot system. Our results suggest that compaction affects seedling root system growth following the first growth stages after germination; thus, compaction represents an additional critical factor for seedling establishment, particularly in environments where early growth is crucial for overcoming the dry season.
机译：利用重物效应由于压实而改变土壤特性的测井操作;这种条件可以对苗木发育产生负面影响。在基于近乎自然造林或连续覆盖林业的立场，伐木后成功建立自然再生是确保森林生态系统的适当运作，促进土壤回收，并预防和减轻土地退化过程（如土壤侵蚀，泥浆，涝，山体滑坡）与土壤压实和车辙相关。这项工作旨在评估萌发后的前1.5个月后昆虫抢劫幼苗对土壤压实的早期反应。该研究在受控环境中进行使用，其中8L填充有天然冲积土壤。使用放置在容器的土壤顶部表面上的压缩试验机在实验室中应用三种水平的土壤压实。分析幼苗芽和根系系统的形态学性状以比较3个压实水平。治疗中的幼苗性状有显着差异，它们表明，在出现后，压实水平降低了早期幼苗生长。与拍摄系统相比，压实对根系的影响更大，特别是深度的开发（根系深度和主要根长）。我们的研究结果表明，在发芽后第一次生长阶段后，压实会影响幼苗根系生长;因此，压实代表了幼苗建立的另一个关键因素，特别是在早期生长对于克服干燥季节至关重要的环境中。

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  • 来源
    《Land Degradation and Development》 |2018年第4期|共10页
  • 作者

    Cambi Martina; Mariotti Barbara; Fabiano Fabio; Maltoni Alberto; Tani Andrea; Foderi Cristiano; Laschi Andrea; Marchi Enrico;

  • 作者单位

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

    Univ Firenze Dipartimento Gest Sistemi Agr Alimentari &

    Forest Via S Bonaventura 13 I-50145 Florence Italy;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 土壤学;
  • 关键词

    logging operation; pedunculate oak; regeneration; root system; seedling growth;

    机译：伐木操作;Pedurnulate橡树;再生;根系;幼苗生长;

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