The production of phytolith-occluded carbon in China's forests implications to biogeochemical carbon sequestration

The production of phytolith-occluded carbon in China's forests : implications to biogeochemical carbon sequestration

© 2013 John Wiley & Sons Ltd.

Bibliographische Detailangaben
Veröffentlicht in:Global change biology. - 1999. - 19(2013), 9 vom: 08. Sept., Seite 2907-15
1. Verfasser: Song, Zhaoliang (VerfasserIn)
Weitere Verfasser: Liu, Hongyan, Li, Beilei, Yang, Xiaomin
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 China bamboo biogeochemical carbon sequestration carbon sink forest phytolith-occluded carbon (PhytOC) Carbon 7440-44-0
Beschreibung
Zusammenfassung:© 2013 John Wiley & Sons Ltd.
The persistent terrestrial carbon sink regulates long-term climate change, but its size, location, and mechanisms remain uncertain. One of the most promising terrestrial biogeochemical carbon sequestration mechanisms is the occlusion of carbon within phytoliths, the silicified features that deposit within plant tissues. Using phytolith content-biogenic silica content transfer function obtained from our investigation, in combination with published silica content and aboveground net primary productivity (ANPP) data of leaf litter and herb layer in China's forests, we estimated the production of phytolith-occluded carbon (PhytOC) in China's forests. The present annual phytolith carbon sink in China's forests is 1.7 ± 0.4 Tg CO2  yr(-1) , 30% of which is contributed by bamboo because the production flux of PhytOC through tree leaf litter for bamboo is 3-80 times higher than that of other forest types. As a result of national and international bamboo afforestation and reforestation, the potential of phytolith carbon sink for China's forests and world's bamboo can reach 6.8 ± 1.5 and 27.0 ± 6.1 Tg CO2  yr(-1) , respectively. Forest management practices such as bamboo afforestation and reforestation may significantly enhance the long-term terrestrial carbon sink and contribute to mitigation of global climate warming
Beschreibung:Date Completed 19.09.2013
Date Revised 07.08.2013
published: Print-Electronic
Citation Status MEDLINE
ISSN:1365-2486
DOI:10.1111/gcb.12275