气候变化领域集成服务门户(CCPortal): The transboundary transport of air pollutants and their environmental impacts on Tibetan Plateau

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DOI	10.1360/TB-2019-0135
	The transboundary transport of air pollutants and their environmental impacts on Tibetan Plateau
	Kang, Shichang; Cong, Zhiyuan; Wang, Xiaoping; Zhang, Qianggong; Ji, Zhenming; Zhang, Yulan; Xu, Baiqing
通讯作者	Kang, SC (通讯作者)
发表日期	2019
ISSN	0023-074X
EISSN	2095-9419
起始页码	2876
结束页码	2884
卷号	64 期号:27
英文摘要	The Tibetan Plateau is the largest high altitude landform on Earth, with an area of over 2.5x10(6) km(2) and an average elevation of similar to 4000 m above sea level. With a unique multisphere environmental system, the Tibetan Plateau provides an important ecological sheltering function for China and other parts of Asia. The Tibetan Plateau is one of the world's most pristine regions, benefiting from a sparse population with negligible local influence on its environment. However, it is surrounded by some of the most polluted areas in the world, such as South Asia, East Asia, and Southeast Asia. With the atmospheric circulation, such pollutants may impact the Tibetan Plateau through long-range transport. Clearly, the scientific research on the transboundary transport of pollutants is not only important for the understanding of multisphere interactions on the earth surface, but also could meet the national strategic needs for ecological and environmental protection. Long-term monitoring combined with short-term intensive observation campaigns, were used to comprehensively summarize the latest research progress regarding the spatial-temporal distribution and transport mechanism of air pollutants, as well as their climate and ecological impacts, which were achieved during the Second Tibetan Plateau Scientific Expedition. With respect of historical trends reconstructed from environmental archives, e.g., glacial ice cores and lake sediments, the black carbon and heavy metals like mercury show a dramatic increase since 1950s, which reflect the enhanced emission of air pollutants in Asia. On-line observation data and WRF-Chem modeling indicate that upper air circulation and local mountain-valley breeze system are the main drivers of trans Himalaya air pollution from South Asia. A regional climate-chemistry model coupled with an aerosol-snow/ice feedback module was used to reveal the natural and anthropogenic light-absorbing aerosols' radiative effects over the Tibetan Plateau. Results indicated that the mineral dust both in the atmosphere and snow induced 0.1-0.5 degrees C warming over the western Tibetan Plateau and Kunlun Mountains in spring. Meanwhile, dust aerosols caused snow water equivalent to decrease by 5-25 mm over the western TP, Himalayas and Pamir Mountains in winter and spring. The radiative effects of BC-in-snow induced surface temperature increased by 0.1-1.5 degrees C and snow water equivalent decreased by 5-25 mm over the western Tibetan Plateau and Himalayas. According to the observations the black carbon and dust found in the snow and ice on the surfaces of glaciers were responsible for on average 20% of the albedo reduction within the TP region. Those atmospherically transported pollutants also have obvious negative impacts on the ecosystem in Tibetan Plateau. For example, bioaccumulation of DDTs have been found in Tibetan terrestrial and aquatic food chains, and newly emerging compounds such as polyfluoroalkyl substances and hexabromocyclodo-decanes have been widely detected in wild fish species. Therefore, the corresponding ecological risks are of great concern. In the future, it is necessary to quantify the extent of atmospherically transported pollution and model the pollutant fate under the future environmental scenarios as well as establish environmental and health risk.
关键词	HIGH-ALTITUDE SITE LIGHT-ABSORBING IMPURITIES BLACK CARBON ORGANOCHLORINE PESTICIDES POLYCHLORINATED-BIPHENYLS NAM CO 3RD POLE M A.S.L.AEROSOLS HIMALAYAS
英文关键词	Tibetan Plateau; anthropogenic activity; atmospheric pollutants; transboundary transport; environmental effect; risk assessment
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000496463900013
来源期刊	CHINESE SCIENCE BULLETIN-CHINESE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259521
推荐引用方式 GB/T 7714	Kang, Shichang,Cong, Zhiyuan,Wang, Xiaoping,et al. The transboundary transport of air pollutants and their environmental impacts on Tibetan Plateau[J]. 中国科学院青藏高原研究所,2019,64(27).
APA	Kang, Shichang.,Cong, Zhiyuan.,Wang, Xiaoping.,Zhang, Qianggong.,Ji, Zhenming.,...&Xu, Baiqing.(2019).The transboundary transport of air pollutants and their environmental impacts on Tibetan Plateau.CHINESE SCIENCE BULLETIN-CHINESE,64(27).
MLA	Kang, Shichang,et al."The transboundary transport of air pollutants and their environmental impacts on Tibetan Plateau".CHINESE SCIENCE BULLETIN-CHINESE 64.27(2019).