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Effect of ecological restoration programs on dust concentrations in the North China Plain: a case study
Long, Xin1,2; Tie, Xuexi1,2,3,4,5; Li, Guohui1,2; Cao, Junji1,2; Feng, Tian1,6; Zhao, Shuyu1,2; Xing, Li1,2; An, Zhisheng2
2018-05-04
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号18期号:9页码:6353-6366
文章类型Article
摘要In recent decades, the Chinese government has made a great effort in initiating large-scale ecological restoration programs (ERPs) to reduce the dust concentrations in China, especially for dust storm episodes. Using the Moderate Resolution Imaging Spectroradiometer (MODIS) land cover product, the ERP-induced land cover changes are quantitatively evaluated in this study. Two obvious vegetation protective barriers arise throughout China from the southwest to the northeast, which are well known as the "Green Great Wall" (GGW). Both the grass GGW and forest GGW are located between the dust source region (DSR) and the densely populated North China Plain (NCP). To assess the effect of ERPs on dust concentrations, a regional transport/dust model (WRF-DUST, Weather Research and Forecast model with dust) is applied to investigate the evolution of dust plumes during a strong dust storm episode from 2 to 8 March 2016. The WRF-DUST model generally performs reasonably well in reproducing the temporal variations and spatial distributions of near-surface [PMC] (mass concentration of particulate matter with aerodynamic diameter between 2.5 and 10 mu m) during the dust storm event. Sensitivity experiments have indicated that the ERP-induced GGWs help to reduce the dust concentration in the NCP, especially in BTH (Beijing, Tianjin, and Hebei). When the dust storm is transported from the upwind DSR to the downwind NCP, the [PMC] reduction ranges from -5 to -15% in the NCP, with a maximum reduction of -12.4% (-19.2 mu gm(3)) in BTH and -7.6% (-10.1 mu g m(3)) in the NCP. We find the dust plumes move up to the upper atmosphere and are transported from the upwind DSR to the downwind NCP, accompanied by dust decrease. During the episode, the forest GGW is nonsignificant in dust concentration control because it is of benefit for dry deposition and not for emission. Conversely, the grass GGW is beneficial in controlling dust erosion and is the dominant reason for [PMC] decrease in the NCP. Because the air pollution is severe in eastern China, especially in the NCP, and the contribution of dust episodes is significant, the reduction of dust concentrations will have important effects on severe air pollution. This study illustrates the considerable contribution of ERPs to the control of air pollution in China, especially in springtime.
WOS标题词Science & Technology ; Physical Sciences
DOI10.5194/acp-18-6353-2018
关键词[WOS]ASIAN DUST ; DESERT DUST ; MODELING SYSTEM ; GOCART MODEL ; AIR-QUALITY ; PART II ; AEROSOLS ; CLIMATE ; POLLUTION ; STORM
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000431458800006
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/5160
专题粉尘与环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Shaanxi, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
4.Shanghai Key Lab Meteorol & Hlth, Shanghai 200030, Peoples R China
5.Natl Ctr Atmospher Res, Boulder, CO 80303 USA
6.Xian AMS Ctr, Xian 710061, Shaanxi, Peoples R China
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Long, Xin,Tie, Xuexi,Li, Guohui,et al. Effect of ecological restoration programs on dust concentrations in the North China Plain: a case study[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(9):6353-6366.
APA Long, Xin.,Tie, Xuexi.,Li, Guohui.,Cao, Junji.,Feng, Tian.,...&An, Zhisheng.(2018).Effect of ecological restoration programs on dust concentrations in the North China Plain: a case study.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(9),6353-6366.
MLA Long, Xin,et al."Effect of ecological restoration programs on dust concentrations in the North China Plain: a case study".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.9(2018):6353-6366.
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