西安城墙“披绿”引关注 专家:暂不影响城墙稳定性|国产乱人伦偷精品视频
中新网西安10月16日电 (记者 梅镱泷)近日,西安城墙部分墙体上长出了密集的青苔,引发公众关注。“连续阴雨天气,导致空气湿度提升以及城墙表面含水量增加,所以长出了青苔。”西北大学文化遗产学院副教授赵星表示,生活中青苔生长较为普遍,在其他建筑中也会出现。

据悉,自9月以来,陕西地区已多次遭遇阴雨天气。其主要成因在于副热带高压与西风槽在该区域上空交汇,形成了一个相对稳定的雨带,进而引发了这场波及范围广、持续时间久的降雨现象,同时也为青苔的生长创造了条件。
记者在西安城墙看到,青苔呈现出深浅不一的绿色,密密麻麻地附着在城墙表面,远看犹如给城墙披上了一层“绿衣”,吸引了众多民众前来拍照“打卡”。这一现象同时也引发了公众对青苔是否会对城墙造成损害的关注。

“理论上来说青苔会对城墙产生一定的影响,但是具体影响有多大,还需要进行检测评估。”赵星说,从目前情况来看青苔主要是在城墙表面出现,并不影响城墙的稳定性,所以大家不必过度担心城墙的安全性问题。

当日,在西安城墙工作人员的协作下,赵星团队对城墙墙体上的青苔进行了巡检和采样。赵星表示,此次采样目的是对墙体表面的青苔及其他生物种类进行分析,以便对城墙表面青苔病害进行定量评估,为后续青苔治理工作提供科学依据。
赵星建议,若遇连续阴雨天气,出现大面积青苔时,相关文保单位应该加强巡逻,实时监测青苔生长情况,同时开展青苔对文物安全性的评估,防范隐患问题发生。再就是进行科学研究,分析青苔生长的具体因素以及制定科学的防治措施,通过科学手段精准治理青苔,避免对文物造成不必要的损害。(完)
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