摘要
利用1996—2001年在莫高窟区及敦煌农区的同步监测资料,分析了对敦煌壁画有害成分的SO2、NOX和TSP质量浓度的年际变化、年变化及季节变化特征。结果表明:莫高窟大气环境中SO2和NOX平均质量浓度分别为0.0268 mg.m-3和0.0217 mg.m-3,达到国家(GB3095-1996)中规定的二级标准;TSP质量浓度为0.3077 mg.m-3,是国家二级标准的153.9%。莫高窟SO2质量浓度呈明显的上升趋势,应引起高度重视。
With monitoring data from 1996 to 2001, analyzing the annual mass concentration change of SO2, NOx and TSP that is harmful to Dunhuang frescos, we draw some conclusions as follows. Average mass concentration of SO2, NOx in the air is 0. 0268 mg· m ^-3 and 0. 0217 mg · m^-3, respectively, satisfying national second standard criteria in GB3095 -- 1996. But the mass concentration of TSP is 0. 3077 mg · m^- 3 and 153.9% of that of national second standard criteria. The mass concentration of SO2 appears a conspicuous rising trend and should pay more attention. We suggest that it should strengthen ecological environment construction in grotto region and link with protection of whole Dunhuang oasis. A good condition for frescos preservation can be created by the means of controlling tourists reasonably to reduce the content of harmful components.
出处
《高原气象》
CSCD
北大核心
2006年第1期164-168,共5页
Plateau Meteorology
基金
国家重点基础研究发展规划项目(G2000048705)
国家文物局文物保护科学和技术研究课题(9907)共同资助
关键词
敦煌莫高窟
壁画
有害成分
污染状况
Dunhuang Magao Grottoes
Frescos
Harmful components
Pollution status
