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首页> 外文期刊>Building and Environment >Experimental investigations into the interactions between moisture, rock surface temperatures and an epilithic lichen cover in the bioprotection of limestone
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Experimental investigations into the interactions between moisture, rock surface temperatures and an epilithic lichen cover in the bioprotection of limestone

机译：石灰石生物保护中水分，岩石表面温度与上层地衣覆盖层之间相互作用的实验研究

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This paper examines the links between moisture, epilithic lichens, rock surface temperatures and weathering. Field and laboratory experiments were conducted in order to investigate the combined effect of surface wetness and Verrucaria nigrescens (an epilithic lichen) on limestone temperature fluctuations. Exposure blocks with and without a lichen cover were subjected to short-term temperature fluctuations and two types of moisture events: artificial showers (8 ml rainfall) and larger storms (40 ml rainfall). The experiments showed that larger storms are more likely to dampen temperature fluctuations at the rock surface, especially in the presence of an epilithic lichen cover, providing evidence for a mechanism of bioprotection. The conclusion is that the epilithic lichen retains moisture, which reduces thermal stress in the surface of the limestone.
机译：本文研究了水分，表层地衣，岩石表面温度和风化之间的联系。进行了野外和实验室实验，以研究表面湿度和Verrucaria nigrescens（上石器质地衣）对石灰石温度波动的综合影响。有或没有地衣覆盖的接触块都受到短期温度波动和两种湿度事件的影响：人造淋浴（8 ml降雨）和大暴雨（40 ml降雨）。实验表明，较大的风暴更可能会抑制岩石表面的温度波动，尤其是在存在上石器质地衣的情况下，这为生物保护机制提供了证据。结论是，上石器地衣保留了水分，这减少了石灰石表面的热应力。

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