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He, Honglin; Wang, Shaoqiang; Zhang, Li; Wang, Junbang; Ren, Xiaoli; Zhou, Lei; Piao, Shilong; Yan, Hao; Ju, Weimin; Gu, Fengxue; Yu, Shiyong; Yang, Yuanhe; Wang, Miaomiao; Niu, Zhongen; Ge, Rong; Yan, Huimin; Huang, Mei; Zhou, Guoyi; Bai, Yongfei; Xie, Zongqiang; Tang, Zhiyao; Wu, Bingfang; Zhang, Leiming; He, Nianpeng; [...]

Altered trends in carbon uptake in China's terrestrial ecosystems under the enhanced summer monsoon and warming hiatus

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  • Medientyp: E-Artikel
  • Titel: Altered trends in carbon uptake in China's terrestrial ecosystems under the enhanced summer monsoon and warming hiatus
  • Beteiligte: He, Honglin; Wang, Shaoqiang; Zhang, Li; Wang, Junbang; Ren, Xiaoli; Zhou, Lei; Piao, Shilong; Yan, Hao; Ju, Weimin; Gu, Fengxue; Yu, Shiyong; Yang, Yuanhe; Wang, Miaomiao; Niu, Zhongen; Ge, Rong; Yan, Huimin; Huang, Mei; Zhou, Guoyi; Bai, Yongfei; Xie, Zongqiang; Tang, Zhiyao; Wu, Bingfang; Zhang, Leiming; He, Nianpeng; [...]
  • Erschienen: Oxford University Press (OUP), 2019
  • Erschienen in: National Science Review, 6 (2019) 3, Seite 505-514
  • Sprache: Englisch
  • DOI: 10.1093/nsr/nwz021
  • ISSN: 2095-5138; 2053-714X
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: AbstractThe carbon budgets in terrestrial ecosystems in China are strongly coupled with climate changes. Over the past decade, China has experienced dramatic climate changes characterized by enhanced summer monsoon and decelerated warming. However, the changes in the trends of terrestrial net ecosystem production (NEP) in China under climate changes are not well documented. Here, we used three ecosystem models to simulate the spatiotemporal variations in China's NEP during 1982–2010 and quantify the contribution of the strengthened summer monsoon and warming hiatus to the NEP variations in four distinct climatic regions of the country. Our results revealed a decadal-scale shift in NEP from a downtrend of –5.95 Tg C/yr2 (reduced sink) during 1982–2000 to an uptrend of 14.22 Tg C/yr2 (enhanced sink) during 2000–10. This shift was essentially induced by the strengthened summer monsoon, which stimulated carbon uptake, and the warming hiatus, which lessened the decrease in the NEP trend. Compared to the contribution of 56.3% by the climate effect, atmospheric CO2 concentration and nitrogen deposition had relatively small contributions (8.6 and 11.3%, respectively) to the shift. In conclusion, within the context of the global-warming hiatus, the strengthening of the summer monsoon is a critical climate factor that enhances carbon uptake in China due to the asymmetric response of photosynthesis and respiration. Our study not only revealed the shift in ecosystem carbon sequestration in China in recent decades, but also provides some insight for understanding ecosystem carbon dynamics in other monsoonal areas.
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