KIT | KIT-Bibliothek | Impressum | Datenschutz

Tea-planted soils as global hotspots for N2O emissions from croplands

Wang, Y.; Yao, Z.; Pan, Z.; Wang, R.; Yan, G.; Liu, C.; Su, Y.; Zheng, X.; Butterbach-Bahl, Klaus 1,2
1 Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU), Karlsruher Institut für Technologie (KIT)
2 Institut für Meteorologie und Klimaforschung (IMK), Karlsruher Institut für Technologie (KIT)


Tea-planted soils generally receiving high nitrogen (N) fertilizer doses are more vulnerable to acidification, and turn into significant sources of the potent greenhouse gas nitrous oxide (N$_{2}$O). However, little is known about the magnitude of soil N$_{2}$O emissions from global tea plantations. Based on a global meta-analysis of field experimental data collected from major tea growing countries, we quantify annual N$_{2}$O emissions, calculate direct emission factors (EFd) and identify key environmental controls of emissions from tea plantations. However, most data are from China and Japan, which is to be expected given that tea plantations in these countries represent >60% of the global area and the vital environmental research community in both countries. Results suggest that annual N$_{2}$O emissions from soils of global tea plantations are on average 17.1 kg N ha$^{−1}$ (or 8008 kg CO2-eq ha$^{−1}$), being substantially greater than those reported for cereal croplands (662–3757 kg CO$_{2}$-eq ha$^{−1}$). The global mean EF$_{d}$ for N applications to tea plantations equals 2.31% (with a 95% confidence interval of 1.91%–2.71%), being two times higher than the Intergovernmental Panel on Climate Change default value of 1%. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000125668
Veröffentlicht am 05.11.2020
DOI: 10.1088/1748-9326/aba5b2
Zitationen: 21
Web of Science
Zitationen: 16
Zitationen: 20
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Meteorologie und Klimaforschung – Atmosphärische Umweltforschung (IMK-IFU)
KIT-Zentrum Klima und Umwelt (ZKU)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 1748-9318, 1748-9326
KITopen-ID: 1000125668
HGF-Programm 12.02.01 (POF III, LK 01) Effects of land use and climate change
Erschienen in Environmental research letters
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 15
Heft 10
Seiten Art.-Nr.: 104018
Schlagwörter tea, nitrous oxide, acidic soil, emission factor, fertilized cropland
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page