Journal article
Nitrous oxide production pathways in Australian forest soils
B Pan, Y Zhang, L Xia, S Kee Lam, HW Hu, D Chen
Geoderma | Published : 2022
Abstract
Forest soils are a major source of N2O emissions from terrestrial ecosystems. However, the magnitude and contribution of N2O production from different pathways in Australian forest soils remain uncertain. We conducted a 15N tracing laboratory incubation experiment on 13 forest soils sampled from subtropical, temperate and arid regions across Australia and found that forest soils in temperate areas had the highest N2O emission rate (19.5 µg N kg−1 soil d-1), followed by subtropical and arid soils (3.84 and 3.80 µg N kg−1 soil d-1, respectively). N2O production in Australian forest soils was mainly derived from the organic nitrogen (N) pool; its contribution followed the order of arid (78%) > ..
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Awarded by Australian Research Council
Funding Acknowledgements
We acknowledge the Melbourne Trace Analysis for Chemical, Earth and Environmental Sciences (TrACEES) , The University of Melbourne for analytical support. We gratefully thank Dr Qinglin Chen, Zhenzhen Yan and Chaoyu Li for assistance in soil sampling. This work is funded by Australian Research Council (ARC) Linkage Project (LP160101417) , ARC Research Hub for Innovative Nitrogen Fertilizers and Inhibitors (IH200100023) , Australian Government Research Training Program Scholarship, National Natural Science Foundation of China (41771330, 41907077) and of Fujian Province (2019J01104, 2019J01105) , Foundation of Fujian Academic of Agricultural Sciences (CXPT202106) .