Multi-scale spatiotemporal trends and corresponding disparities of PM2.5 exposure in China

中国 地理 北京 人口 比例(比率) 自然地理学 环境科学 社会经济学 环境卫生 地图学 医学 考古 社会学
作者
Yu Bai,Menghang Liu
出处
期刊:Environmental Pollution [Elsevier BV]
卷期号:340: 122857-122857 被引量:8
标识
DOI:10.1016/j.envpol.2023.122857
摘要

Despite the effectiveness of targeted measures to mitigate air pollution, China-a developing country with high PM2.5 concentration and dense population, faces a high risk of PM2.5-related mortality. However, existing studies on long-term PM2.5 exposure in China have not reached a consensus as to which year it peaked during the "initially pollution, then mitigation" process. Furthermore, analyses in these studies were rarely undertaken from multi-spatial scales. In this study, a piecewise linear regression model was employed to detect the turning point of population-weighted exposure (PWE) to PM2.5 for the period 2000-2020. Multi-scale spatiotemporal patterns of PM2.5 exposure were evaluated during upward and downward periods at the province, city and county levels, and their corresponding disparities were estimated using the Gini index. The results showed that 2013 was the breakpoint year for PM2.5 PWE across China from 2000 to 2020. Cities and counties where PM2.5 PWE displayed increasing trends during the mitigation stage (2013-2020) basically became the heaviest PM2.5 exposure regions in 2020. High PM2.5 exposure was observed in Beijing-Tianjin-Hebei, Central China, and the Tarim Basin in Xinjiang, whereas lower PM2.5 exposure regions were mainly concentrated in Hainan Province, the Hengduan Mountains, and northern Xinjiang. These cross-provincial patterns might have been overlooked when conducting macro-scale analyses. Province-level PM2.5 exposure inequality was less than the city- and county-levels estimations, and regional inequalities were high in eastern and western China. In this study, multi-scale PM2.5 exposure trends and their disparities over a prolonged period were investigated, and the findings provide a reference for pollution mitigation and regional inequality reduction.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
Hululu完成签到 ,获得积分10
刚刚
淡然的芷荷完成签到 ,获得积分10
1秒前
GT完成签到,获得积分10
3秒前
qiancib202完成签到,获得积分10
6秒前
量子星尘发布了新的文献求助10
7秒前
等待的幼晴完成签到,获得积分10
8秒前
负责灵萱完成签到 ,获得积分10
10秒前
幽默的忆霜完成签到 ,获得积分10
18秒前
20秒前
24秒前
风光无限完成签到 ,获得积分20
28秒前
庄海棠完成签到 ,获得积分10
40秒前
量子星尘发布了新的文献求助10
41秒前
沐风完成签到 ,获得积分10
47秒前
含糊的茹妖完成签到 ,获得积分0
50秒前
55秒前
huangqian完成签到,获得积分10
1分钟前
沧海一粟完成签到 ,获得积分10
1分钟前
进击的巨人完成签到 ,获得积分10
1分钟前
1分钟前
牛马完成签到,获得积分10
1分钟前
1分钟前
我不是奶黄包完成签到,获得积分10
1分钟前
Gavin完成签到,获得积分10
1分钟前
cq_2完成签到,获得积分10
1分钟前
花生完成签到 ,获得积分10
1分钟前
小二郎应助科研通管家采纳,获得10
1分钟前
Hello应助科研通管家采纳,获得10
1分钟前
Tianling完成签到,获得积分0
1分钟前
Rn完成签到 ,获得积分10
1分钟前
吉祥高趙完成签到 ,获得积分10
1分钟前
嘉人完成签到 ,获得积分10
1分钟前
可千万不要躺平呀应助yar采纳,获得10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
Lucas应助尊敬代亦采纳,获得10
1分钟前
yinshan完成签到 ,获得积分10
1分钟前
1分钟前
yar重新开启了小飞文献应助
1分钟前
1分钟前
幸福的杨小夕完成签到,获得积分20
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038029
求助须知:如何正确求助?哪些是违规求助? 3575740
关于积分的说明 11373751
捐赠科研通 3305559
什么是DOI,文献DOI怎么找? 1819224
邀请新用户注册赠送积分活动 892652
科研通“疑难数据库(出版商)”最低求助积分说明 815022