干旱区生态环境知识资源中心(Arid): Weakened dust activity over China and Mongolia from 2001 to 2020 associated with climate change and land-use management

Arid

DOI	10.1088/1748-9326/ac3b79
	Weakened dust activity over China and Mongolia from 2001 to 2020 associated with climate change and land-use management
	Wang, Shushan; Yu, Yan; Zhang, Xiao-Xiao; Lu, Huayu; Zhang, Xiao-Ye; Xu, Zhiwei
通讯作者	Xu, ZW (corresponding author), Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China.
来源期刊	ENVIRONMENTAL RESEARCH LETTERS
ISSN	1748-9326
出版年	2021
卷号	16 期号:12
英文摘要	Dust cycle is actively involved in the Earth's climate and environmental systems. However, the spatiotemporal pattern and recent trend of dust emission from the drylands in East Asia remain unclear. By calculating dust aerosol optical depth (DOD) from the newly released moderate resolution imaging spectrometer aerosol products, we obtain a relatively long satellite-based time series of dust activity from 2001 to 2020 over China and Mongolia. We identify pronounced interannual variability of dust activity that is consistent with ground-based meteorological observations in the study area. A substantial reduction in spring dust activity in northern China is also found, which seems in accordance with the long-term weakening trend since the 1970s that has been attributed to the wind speed decline by previous studies. However, the spatial pattern of the trends in both annual mean and seasonal dust activity during the last 20 years is divergent, and the most significant dust diminishing is found over north-central China where large-scale vegetation restoration projects have been implemented. It indicates that in addition to the potential contribution of wind speed change, land-use change also plays an important role in the recent inhibition of dust emission. The current results show that dust activity occurs most intensively in spring, followed by summer and relatively weaker in autumn and winter. However, dust activity in autumn and winter has increased significantly in NW China despite the overall decreasing trend in other two seasons, probably associated with different seasonal atmospheric and land surface conditions. Finally, the DOD distribution reveals that the Tarim Basin, Gobi and Qaidam Basin Deserts are three major dust sources in East Asia. Compared to ground observations which are spatially limited and distributed unevenly, remote sensing provides an important complement, and it can serve as reference for identification of dust sources using other methods such as geochemical fingerprint and modeling.
英文关键词	arid environment climate change dust aerosol optical depth East Asia LUCC remote sensing
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000728954600001
WOS关键词	NORTHERN CHINA ; INTERANNUAL VARIABILITY ; TIBETAN PLATEAU ; OPTICAL DEPTH ; EAST-ASIA ; AEROSOL ; STORM ; TRANSPORT ; SATELLITE ; EMISSIONS
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374007
作者单位	[Wang, Shushan; Lu, Huayu; Xu, Zhiwei] Nanjing Univ, Sch Geog & Ocean Sci, Nanjing, Peoples R China; [Yu, Yan] Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Beijing, Peoples R China; [Zhang, Xiao-Xiao] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Zhang, Xiao-Ye] Chinese Acad Meteorol Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wang, Shushan,Yu, Yan,Zhang, Xiao-Xiao,et al. Weakened dust activity over China and Mongolia from 2001 to 2020 associated with climate change and land-use management[J],2021,16(12).
APA	Wang, Shushan,Yu, Yan,Zhang, Xiao-Xiao,Lu, Huayu,Zhang, Xiao-Ye,&Xu, Zhiwei.(2021).Weakened dust activity over China and Mongolia from 2001 to 2020 associated with climate change and land-use management.ENVIRONMENTAL RESEARCH LETTERS,16(12).
MLA	Wang, Shushan,et al."Weakened dust activity over China and Mongolia from 2001 to 2020 associated with climate change and land-use management".ENVIRONMENTAL RESEARCH LETTERS 16.12(2021).