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The effect of different foundation systems on the fungal flora in the crawl space of a new wooden Japanese house

机译：不同基础系统对日本新木房子爬行空间内真菌菌群的影响

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摘要

To establish novel preventive measures against damage of wooden houses by decay fungi with less chemical, we periodically monitored the fungal flora in two different foundation systems in the crawl space of an experimental Japanese house.rnWe employed either a layer of concrete or just soil as the foundation system. Moisture content of foundation timbers, temperature and humidity of the crawl space were measured. Fungi were sampled by the following methods: a) from the crawl space atmosphere with a PDA plate, b) from foundation timbers with a soft plastic tape, and c) from small wood blocks laid on a layer of concrete or on soil. Visually basidiomycetes were served for DNA analyses. A decay test was conducted with these fungi: 16 white rot and a brown rot.rnNumbers of fungal colonies in the concrete section were lower than that in the soil section. The soil section generally showed higher humidity and moisture content of foundation timber than the concrete section. These findings suggested that the soil strongly influenced the water condition of the crawl space, indicating the higher decay risk in the soil section.rnIn order to analyze the effect of air-flow on the fungal flora, all ventilation slits were air-tightly closed with an aluminium tape. This resulted in higher numbers of fungal colonies, humidity and moisture content of foundation timbers in the soil section.rnThis study indicated the importance of foundation system in wooden houses, and the higher decay risk in the soil floor than in the concrete floor.
机译：为了建立防止化学物质较少的腐烂真菌损坏木房的新颖预防措施，我们定期在日本实验房屋的爬行空间中的两个不同基础系统中监测真菌菌群.rn我们采用了一层混凝土或仅土壤作为土壤基础系统。测量基础木材的水分含量，爬行空间的温度和湿度。通过以下方法对真菌进行采样：a）使用PDA板从爬行空间中取样，b）用软塑料带从基础木材中取样，以及c）从放在混凝土层或土壤上的小木块中取样。视觉上将担子菌用于DNA分析。对这些真菌进行了腐烂试验：16个白色腐烂和一个棕色腐烂。rn混凝土部分的真菌菌落数量少于土壤部分。土壤部分通常显示出比木材部分更高的基础木材湿度和水分含量。这些发现表明土壤强烈地影响了爬行空间的水分状况，表明土壤剖面中的腐烂风险更高。为了分析气流对真菌菌群的影响，所有通风缝都被气密地封闭，铝胶带。这导致土壤剖面中基础木材的真菌菌落，湿度和水分含量更高。研究表明，基础系统在木屋中的重要性，以及土壤地板中腐烂风险高于混凝土地板。

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  • 来源
    《Building and Environment》 |2010年第4期|1054-1060|共7页
  • 作者

    Aya Toyoumi; Sakae Horisawa; Tsuyoshi Yoshimura; Shuichi Doi; Yuji Imamura;

  • 作者单位

    Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan;

    Department of Environmental Systems Engineering, Faculty of Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami-gun, Kochi 782-8502, Japan;

    Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan;

    Graduate School of Life and Environmental Sciences, University of Tsukuba. 1-1-1 Tennodai, Tsukuba-shi, Ibaraki-ken 305-8577, Japan;

    Research Institute for Sustainable Humanosphere, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan;

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

    wood-relating fungi; crawl space environment; foundation system;

    机译：木材相关真菌;爬行空间环境;基础系统;

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