The impacts of climate change and human activities on biogeochemical cycles on the Qinghai-Tibetan Plateau

The impacts of climate change and human activities on biogeochemical cycles on the Qinghai-Tibetan Plateau

© 2013 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 19(2013), 10 vom: 06. Okt., Seite 2940-55
1. Verfasser: Chen, Huai (VerfasserIn)
Weitere Verfasser: Zhu, Qiuan, Peng, Changhui, Wu, Ning, Wang, Yanfen, Fang, Xiuqing, Gao, Yongheng, Zhu, Dan, Yang, Gang, Tian, Jianqing, Kang, Xiaoming, Piao, Shilong, Ouyang, Hua, Xiang, Wenhua, Luo, Zhibin, Jiang, Hong, Song, Xingzhang, Zhang, Yao, Yu, Guirui, Zhao, Xinquan, Gong, Peng, Yao, Tandong, Wu, Jianghua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2013
Zugriff auf das übergeordnete Werk:Global change biology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Review carbon budget ice retreat intact ecosystems land use change permafrost
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520 |a With a pace of about twice the observed rate of global warming, the temperature on the Qinghai-Tibetan Plateau (Earth's 'third pole') has increased by 0.2 °C per decade over the past 50 years, which results in significant permafrost thawing and glacier retreat. Our review suggested that warming enhanced net primary production and soil respiration, decreased methane (CH(4)) emissions from wetlands and increased CH(4) consumption of meadows, but might increase CH(4) emissions from lakes. Warming-induced permafrost thawing and glaciers melting would also result in substantial emission of old carbon dioxide (CO(2)) and CH(4). Nitrous oxide (N(2)O) emission was not stimulated by warming itself, but might be slightly enhanced by wetting. However, there are many uncertainties in such biogeochemical cycles under climate change. Human activities (e.g. grazing, land cover changes) further modified the biogeochemical cycles and amplified such uncertainties on the plateau. If the projected warming and wetting continues, the future biogeochemical cycles will be more complicated. So facing research in this field is an ongoing challenge of integrating field observations with process-based ecosystem models to predict the impacts of future climate change and human activities at various temporal and spatial scales. To reduce the uncertainties and to improve the precision of the predictions of the impacts of climate change and human activities on biogeochemical cycles, efforts should focus on conducting more field observation studies, integrating data within improved models, and developing new knowledge about coupling among carbon, nitrogen, and phosphorus biogeochemical cycles as well as about the role of microbes in these cycles 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Review 
650 4 |a carbon budget 
650 4 |a ice retreat 
650 4 |a intact ecosystems 
650 4 |a land use change 
650 4 |a permafrost 
700 1 |a Zhu, Qiuan  |e verfasserin  |4 aut 
700 1 |a Peng, Changhui  |e verfasserin  |4 aut 
700 1 |a Wu, Ning  |e verfasserin  |4 aut 
700 1 |a Wang, Yanfen  |e verfasserin  |4 aut 
700 1 |a Fang, Xiuqing  |e verfasserin  |4 aut 
700 1 |a Gao, Yongheng  |e verfasserin  |4 aut 
700 1 |a Zhu, Dan  |e verfasserin  |4 aut 
700 1 |a Yang, Gang  |e verfasserin  |4 aut 
700 1 |a Tian, Jianqing  |e verfasserin  |4 aut 
700 1 |a Kang, Xiaoming  |e verfasserin  |4 aut 
700 1 |a Piao, Shilong  |e verfasserin  |4 aut 
700 1 |a Ouyang, Hua  |e verfasserin  |4 aut 
700 1 |a Xiang, Wenhua  |e verfasserin  |4 aut 
700 1 |a Luo, Zhibin  |e verfasserin  |4 aut 
700 1 |a Jiang, Hong  |e verfasserin  |4 aut 
700 1 |a Song, Xingzhang  |e verfasserin  |4 aut 
700 1 |a Zhang, Yao  |e verfasserin  |4 aut 
700 1 |a Yu, Guirui  |e verfasserin  |4 aut 
700 1 |a Zhao, Xinquan  |e verfasserin  |4 aut 
700 1 |a Gong, Peng  |e verfasserin  |4 aut 
700 1 |a Yao, Tandong  |e verfasserin  |4 aut 
700 1 |a Wu, Jianghua  |e verfasserin  |4 aut 
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