期刊文献+

黄河流域PM_(2.5)时空分布格局及人口暴露研究

Spatiotemporal Distribution Characteristics and Population Exposure Risks to PM_(2.5) in the Yellow River Basin
下载PDF
导出
摘要 文章基于PM_(2.5)遥感反演数据和人口格网分布数据,构建人口暴露风险指数模型,采用Theil-SenMedian与MannKendall检验法,识别2000-2020年间黄河流域PM_(2.5)质量浓度值和人口暴露风险指数时间演化特征,通过空间探索工具,刻画其空间变化特征。研究结果表明:(1)PM_(2.5)质量浓度平均值为46.53μg/m^(3),研究期内呈现出“快速增长—波动变化—持续下降”的态势。PM_(2.5)污染不同等级面积比例变化明显,总体呈现出高浓度区域减少、低浓度区域增加的态势。(2)PM_(2.5)年均质量浓度空间上东高西低。历年PM_(2.5)年均质量浓度空间局部自相关显著。低值区域主要分布在青海、甘肃、宁夏、内蒙古等省份。高值区域集中分布在山西南部、陕西关中地区、河南中部、山东北部区域。(3)除2000年和2020年外,研究时段内均有90%以上人口暴露于PM_(2.5)年均质量浓度35μg/m^(3)限值以上,且高密度人口区域暴露风险等级较高。人口暴露风险极显著增加区域主要包含青海省东南部、宁夏平原地区、内蒙古西部、汾渭平原以及河南中部等地区。(4)PM_(2.5)人口暴露风险分布格局变化不显著。高等级风险区在空间上呈现片状、带状以及点状分布共存的特征,主要为黄河中下游冲积平原以及中游汾渭盆地。 Based on the PM_(2.5) remote sensing inversion data and population distribution data,the population exposure risk index model was constructed.Furthermore,the methods of Theil-Sen Median trend analysis and Mann-Kendall test,and geo-spatial analysis were used to reveal the temporal and spatial characteristics of PM_(2.5) and population exposure risk in the Yellow River basin from 2000 to 2020,and their spatial change characteristics are depicted through space exploration tools.The results show that the annual average concentration of PM_(2.5) is 46.53μg/m^(3) with a trend of“growth rapidly-fluctuating growth-decline continuously”during the study period.The area proportion of PM_(2.5) pollution at different levels changed significantly,showing a trend of decreasing high-concentration areas and increasing low-concentration areas.The annual average concentration of PM_(2.5) is higher in the east and lower in the west.The spatial local autocorrelation of PM_(2.5) average concentration over the years was significant.The low-value areas are mainly distributed in Qinghai,Gansu,Ningxia,Inner Mongolia.High-value areas are concentrated in the southern Shanxi,Guanzhong area of Shaanxi,central Henan,and northern Shandong.Except for 2000 and 2020,more than 90%of the population was exposed to the PM_(2.5) annual average mass concentration of 35μg/m^(3) or more.Moreover,the exposure risk level in high-density population areas was higher.The areas with extremely significant increase in population exposure risk mainly include southeastern Qinghai Province,Ningxia Plain,western Inner Mongolia,Fenwei Plain,and central Henan.The distribution pattern of PM_(2.5) population exposure risk has not changed significantly.The high-level risk areas are characterized by the coexistence of sheet,strip and point distribution in space,mainly including the alluvial plain in the middle and lower reaches and the Fenwei basin in the middle reaches of the Yellow River.
作者 董洁芳 邓椿 蔡文娟 DONG Jiefang;DENG Chun;CAI Wenjuan(Yellow River Cultural and Ecological Research Institute,Yuncheng University,Yuncheng 044000,China;Department of Cultural and Tourism,Yuncheng University,Yuncheng 044000,China;College of Urban and Environmental Science,Northwest University,Xi’an 710127,China)
出处 《环境科学与技术》 CAS CSCD 北大核心 2024年第1期178-188,共11页 Environmental Science & Technology
基金 山西省社科联重点课题(SSKLZDKT2022147) 山西省哲学社会科学规划课题(2023YY291) 山西省运城盐湖保护利用研究院揭榜挂帅研究项目(YHYJ-2023008)。
关键词 PM_(2.5) 人口暴露风险 时空分布 黄河流域 PM_(2.5) population exposure risk spatiotemporal distribution Yellow River Basin
  • 相关文献

参考文献30

二级参考文献398

共引文献652

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部