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圣地亚哥不同PM2.5污染水平下的年小时数(2021–2025)
圣地亚哥不同PM2.5污染水平下的年小时数(2021–2025)
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所属报告:
IQAir:2025年全球空气质量报告(英文版)(44页).pdf
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图2-12020年至2024年全国及重点区域年均PM2.s浓度(柱状)以及三年滑动平均浓度(蓝色点线)(a);
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2025-12-19
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图6-2 2013年至2024年我国归因于PM2.5和Og短期与长期暴露的成人过早死亡人数
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2025-12-19
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图2-62020年和2024年全国339城市年均PM2.5浓度(a),O3-8H90Per浓度(b)
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2025-12-19
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图2-22020年至2024年全国及重点区域PM2.5重度及以上污染天数占比情况
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2025-12-19
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5年内PM2.5年均值(μg/m3) 城市标记指示2025年PM2.5水平,规模根据人口调整 安托法加斯塔.10.8 维尼亚德尔马11.3 智利全国年度平均PM2.5浓度在2025年略有增加,从2024年的16.6 μg/m?上升到17.2 μg/m² 尽管这一小幅增长,长期趋势仍然令人鼓舞。到2025年,智利将监测网络扩展至72个城市 ,其中54%的城市报告了PM2.5水平的年度减少。在皮特鲁夫肯,PM2.5水平下降了8.7μg/ m²,而科伊哈基则比2024年减少了9%。考虑到该地区在6月和7月遭遇了严重的极地反气旋 ,此次进展具有特别重要的意义,因为它带来了破纪录的寒冷天气,并增加了居民木材取暖 的需求。此外,两个城市,蓬塔阿雷纳斯和昆库门,成功达到了世界卫生组织的年度PM2.5 指导水平。尽管许多地区的改善显而易见,但首都圣地亚哥在2025年年度平均PM2.5水平上 小幅上升,增加了1.6 μg/m。 Coyhaique继续被评为该国污染最严重的城市,突显出在南方地区减缓木材燃烧排放的持续 斗争。用于取暖和烹饪的住宅木材燃烧以及道路运输仍然是造成空气质量差的主要因素。大 多数主要智利城市位于中央山谷,夹在东边的安第斯山脉和西边的海岸山脉之间。这些地质 障碍阻碍了大气通风,形成了一个地形盆地,阻止了污染物的水平扩散。在冬季,热倒置通 过将烟雾和废气困在地面附近加剧了这些静止的条件,阻碍了空气的垂直混合,并维持了高 浓度的PM2.5. 此外,该项目还专注于森林和湿地恢复,以减轻野火风险,这是空气污染的另一个主要原因 。通过协调环境、能源和金融政策,该倡议旨在推动必要的系统性调整,以减少污染水平并
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IQAir:2025年全球空气质量报告(英文版)(44页).pdf
Number of reported cities grouped by annual data availability
2025年PM2.5平均浓度(μg/m³):澳大利亚、法属波利尼西亚、新喀里多尼亚、新西兰国家/地区排名
南非主要城市2024–2025年月度数据对比
2021–2025年南非主要城市PM2.5年均浓度变化
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