Reduction of the concentration of ozone in the ozone layer as a result of the action of atmospheric pollutants. The thinning of the ozone layer and the appearance of a visible "hole" over the South Pole region has been the subject of extensive public policy discussions, media coverage, and national legislation and international treaties. Stratospheric ozone shields living organisms on Earth from the harmful effects of the Sun's ultraviolet radiation; even a relatively small decrease in the stratospheric ozone concentration can result in an increased incidence of skin cancer in humans and in genetic damage in many organisms. The prohibition of the manufacture or use of chlorofluorocarbons in the United States, and many other nations, is perhaps the most visible positive result to date of this debate.

ozone depletion(P,,U,English-P,D,U,N)
stratospheric ozone depletion(,U,English-NP,UF,U,N)
臭氧耗竭(P,,U,Chinese (traditional)-P,D,U,U)
平流層臭氧耗竭(,U,Chinese (traditional)-NP,AD,U,U)
ch'ou yang hao chieh(P,,U,Chinese (transliterated Wade-Giles)-P,UF,U,U)
chòu yǎng hào jié(P,,U,Chinese (transliterated Hanyu Pinyin)-P,UF,U,U)
chou yang hao jie(P,,U,Chinese (transliterated Pinyin without tones)-P,UF,U,U)

Top of the AAT hierarchies
....Associated Concepts Facet
........Associated Concepts
............<environmental concepts>
................ozone depletion

causative action is....	chlorofluorocarbon
locational context/setting is....	ozone hole

Chinese (traditional)....	大氧層的污染物活動，導致臭氧層臭氧濃度的減低。臭氧層變薄及南極上空出現極目可見的“破洞”，則成爲公共政策、媒體、國家立法以及國際條約的熱門議題。平流臭氧層可保護地球生物不受太陽紫外綫輻射的傷害；然而，即便臭氧濃度減低程度極微，也可能增加人類罹患皮膚癌與生物基因受損的機率。美國及其他國家禁止製造與使用氟氮碳化物，或許是目前看來最具成效的解決方法。

ozone depletion............	[VP]
.................	Oxford English Dictionary Online (2002-) accessed 17 December 2007
.................	USGS, Science for a Changing World [online] (2005-) "Understanding Environmental Concepts," accessed 17 December 2007
.................	Encyclopedia Britannica Online (2002-) "Atmosphere: Depletion of stratospheric ozone," accessed 17 December 2007
stratospheric ozone depletion............	[VP]
.................	NASA, Educational Resources [online] (2005-) accessed 17 December 2007
臭氧耗竭............	[AS-Academia Sinica]
.................	國立編譯館學術名詞資訊網 July 23, 2009
平流層臭氧耗竭............	[AS-Academia Sinica]
.................	行政院研究發展考核委員會-雙語詞彙資料庫 December 21, 2011
ch'ou yang hao chieh............	[AS-Academia Sinica]
.................	TELDAP database (2009-)
chòu yǎng hào jié............	[AS-Academia Sinica]
.................	TELDAP database (2009-)
chou yang hao jie............	[AS-Academia Sinica]
.................	TELDAP database (2009-)

Getty AAT: 300266798 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300266798
ASDC Union Catalog： ozone depletion 、stratospheric ozone depletion 、臭氧耗竭 、平流層臭氧耗竭 、ch'ou yang hao chieh 、chòu yǎng hào jié 、chou yang hao jie