Abstract：
:June 2019 saw large-scale street protests in Hong Kong that impeded traffic flow along streets in areas around to the Legislative Council building. These had the potential to reduce overall air pollutant emissions from traffic and lower their concentrations. Two roadside monitoring stations relatively close to the Legislative Council reveal that measured concentrations of nitrogen dioxide declined during the protests compared with measurements from other sites by at least 50% on many occasions. There were only subtle changes in particulate loads and no evidence of any reduction in carbon monoxide concentrations. Pedestrianisation and bus route rationalisation are often seen as methods to reduce exposure in congested areas, but the observations here suggest that the substantial improvements in the nitrogen dioxide levels might not be matched by improvements in other pollutants. Plans for changes to street layouts to improve air quality need careful investigation before they are implemented.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Brimblecombe Pdoi
10.1007/s10661-020-8243-0subject
Has Abstractpub_date
2020-04-19 00:00:00pages
295issue
5eissn
0167-6369issn
1573-2959pii
10.1007/s10661-020-8243-0journal_volume
192pub_type
杂志文章abstract：:Biodiversity surveys are often hampered by the inability to control extraneous sources of variability introduced into comparisons of populations across a heterogenous landscape. If not specifically accounted for a priori, this noise can weaken comparisons between sites, and can make it difficult to draw inferences abo...
journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1023/a:1015530712600
更新日期：2002-06-01 00:00:00
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journal_title：Environmental monitoring and assessment
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doi：10.1007/s10661-017-6131-z
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-014-3786-6
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/BF00418016
更新日期：1986-11-01 00:00:00
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
doi：10.1007/s10661-006-9208-7
更新日期：2007-01-01 00:00:00
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journal_title：Environmental monitoring and assessment
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doi：10.1007/s10661-005-9052-1
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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更新日期：2013-08-01 00:00:00
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
pub_type： 杂志文章
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更新日期：2010-11-01 00:00:00
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journal_title：Environmental monitoring and assessment
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更新日期：2018-06-03 00:00:00
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journal_title：Environmental monitoring and assessment
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更新日期：2014-03-01 00:00:00
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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更新日期：2018-01-04 00:00:00
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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doi：10.1007/s10661-011-2384-0
更新日期：2012-09-01 00:00:00
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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journal_title：Environmental monitoring and assessment
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更新日期：2007-07-01 00:00:00
