Back to Search Start Over

Universal temperature sensitivity of denitrification nitrogen losses in forest soils

Authors :
Yu, Haoming
Duan, Yihang
Mulder, Jan
Dörsch, Peter
Zhu, Weixing
Xu-Ri
Huang, Kai
Zheng, Zhoutao
Kang, Ronghua
Wang, Chao
Quan, Zhi
Zhu, Feifei
Liu, Dongwei
Peng, Shushi
Han, Shijie
Zhang, Yangjian
Fang, Yunting
Source :
Nature Climate Change; July 2023, Vol. 13 Issue: 7 p726-734, 9p
Publication Year :
2023

Abstract

Soil nitrous oxide (N2O) and dinitrogen (N2) emissions from denitrification are crucial to the nitrogen (N) cycle. However, the temperature sensitivities (Q10) of gaseous N losses in forest soils are poorly understood, with implications for prediction of N cycle responses to warming. Here, we quantify temperature sensitivities of denitrification-derived potential N2O and N2production. Using soils from 18 forest sites in China along a 4,000 km north–south transect we find that N2O and N2production rates increased with temperature, with large variations across soils. In contrast, the Q10values for N2O (2.1 ± 0.5) and N2(2.6 ± 0.6) were similar across soils. N2was more sensitive to temperature than N2O, suggesting that warming could promote complete denitrification. Moreover, the Q10for denitrification (2.3 ± 0.5) was comparable to Q10for aquatic sediments. This finding of universal temperature sensitivity of gaseous N losses from denitrification will facilitate modelling N losses in response to warming globally.

Details

Language :
English
ISSN :
1758678X and 17586798
Volume :
13
Issue :
7
Database :
Supplemental Index
Journal :
Nature Climate Change
Publication Type :
Periodical
Accession number :
ejs63487716
Full Text :
https://doi.org/10.1038/s41558-023-01708-2