气候变化领域集成服务门户(CCPortal): Factors contribution to oxygen concentration in Qinghai-Tibetan Plateau

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DOI	10.1360/N972018-00655
	Factors contribution to oxygen concentration in Qinghai-Tibetan Plateau
	Shi, Peijun; Chen, Yanqiang; Zhang, Anyu; He, Yan; Gao, Miaoni; Yang, Jing; Mao, Rui; Wu, Jidong; Ye, Tao; Xiao, Cunde; Xu, Baiqing
通讯作者	Shi, PJ (通讯作者)
发表日期	2019
ISSN	0023-074X
EISSN	2095-9419
起始页码	715
结束页码	724
卷号	64 期号:7
英文摘要	Oxygen (O-2) is essential for physiological activity in humans. On the Qinghai-Tibetan Plateau, with an average altitude of more than 4 km, hypoxia can seriously damage local residents' health, especially the respiratory system. When an organism cannot fully compensate for insufficient physiological function caused by hypoxia, acute and chronic mountain sickness (AMS and CMS) will occur. Previous studies have suggested that the relative oxygen concentration (ROC) in the near-ground air shows no obvious changes at different altitudes. However, during field work in the Qinghai-Tibetan Plateau, we found that, in addition to altitude, surface vegetation coverage and weather conditions may also have an impact on ROC. The results of data analysis showed that altitude and 500 hPa air temperature (500 hPa-T) were negatively correlated with ROC, while vegetation coverage was directly proportional to ROC. Based on principal component analysis (PCA), the results indicated that altitude, vegetation coverage and 500 hPa-T accounted for 65.5% of the total variance in ROC, of which the variance interpretation rate of vegetation coverage was highest (33.1%), followed by 500 hPa-T (28.5%) and altitude (3.9%). Absolute oxygen concentration (AOC) was calculated using the Ideal-Gas Equation. Using this equation, we found that altitude, vegetation coverage and 500 hPa-T accounted for 78.9% of the total variance in AOC, of which the variance interpretation rate of altitude was highest (45.9%), followed by vegetation coverage (18.5%) and 500 hPa-T (14.5%). AOC was negatively correlated with the incidence of CMS, and elevated AOC significantly reduced the incidence of CMS. The science community should pay more attention to this topic as a further decrease in ROC could significantly increase instability and risk in populations at high altitudes. These findings could enhance our understanding of the relationships between oxygen concentration, altitude, vegetation, weather conditions and their interactions. In addition, this research may not only play an important guiding role in human and animal health in high altitude areas, but also significantly deepen our understanding of the risks in high altitude environments under global warming both theoretically and practically. Multi-source data, including in-situ measurement data, remote sensing data, and model reanalysis data, will facilitate further implementations in this direction. Future work can be carried out using more fixed-point observations and by expanding the spatio-temporal extent of relevant data in high altitudes.
关键词	CHRONIC MOUNTAIN-SICKNESS ALTITUDE ADAPTATION CLIMATE
英文关键词	oxygen concentration; Qinghai-Tibetan Plateau; life and health; altitude; vegetation; meteorological factors; principal component analysis (PCA)
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000496444000008
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/259409
推荐引用方式 GB/T 7714	Shi, Peijun,Chen, Yanqiang,Zhang, Anyu,et al. Factors contribution to oxygen concentration in Qinghai-Tibetan Plateau[J]. 中国科学院青藏高原研究所,2019,64(7).
APA	Shi, Peijun.,Chen, Yanqiang.,Zhang, Anyu.,He, Yan.,Gao, Miaoni.,...&Xu, Baiqing.(2019).Factors contribution to oxygen concentration in Qinghai-Tibetan Plateau.CHINESE SCIENCE BULLETIN-CHINESE,64(7).
MLA	Shi, Peijun,et al."Factors contribution to oxygen concentration in Qinghai-Tibetan Plateau".CHINESE SCIENCE BULLETIN-CHINESE 64.7(2019).