According to the phenomena of frescos' falling off, coming flakes and fading in the historic church in Macao, a field test for indoor heat and humid environment in summer was carried out. Base on the standards of preservation for cultural relic and field test results,it was concluded that current air-conditioning system was not suitable for preserving the frescos, also the fluctuation of crowds was damaging to the frescos' preservation environment.%本文针对澳门某古教堂壁画的脱落、起甲、褪色等病害现象进行了夏季古教堂内热湿环境的实测.结合文物保存的规定指标和现场实测结果,分析得出了现有空调系统不适合于壁画保存以及人流量的波动对壁画保存环境不利的结论.
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