Stimulation of heterotrophic nitrification and N2O production, inhibition of autotrophic nitrification in soil by adding readily degradable carbon

T Lan; R Liu; H Suter; O Deng; X Gao; L Luo; S Yuan; C Wang; D Chen

Journal article

Stimulation of heterotrophic nitrification and N2O production, inhibition of autotrophic nitrification in soil by adding readily degradable carbon

T Lan, R Liu, H Suter, O Deng, X Gao, L Luo, S Yuan, C Wang, D Chen

Journal of Soils and Sediments | SPRINGER HEIDELBERG | Published : 2020

DOI: 10.1007/s11368-019-02417-0

Abstract

Purpose: This study aimed to test the hypothesis that readily degradable Carbon (C) has contrasting effect on soil N autotrophic and heterotrophic nitrification, can stimulate nitrous oxide (N2O) emission. The knowledge can improve our understanding of the effect of readily degradable C on soil N nitrification and the related N2O emission. Materials and methods: 15N tracing technique along with acetylene inhibition was used to determine the effect of different doses of glucose-C addition on the rates of total nitrification (ntot), autotrophic nitrification (na), heterotrophic nitrification (nh), and N2O production in two soils. Soils were collected from Glenormiston (GN) and Terang (TR), Vic..

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University of Melbourne Researchers

Helen Suter Author

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Grants

Awarded by Department of Agriculture, Australian Government

Funding Acknowledgements

The authors are grateful for the funding provided by the Ministry of Science and Technology of China, National Key Research and Development Plan (2017YFD0200100), by the Institute of Soil Science, Chinese Academy of Sciences, National Key Laboratory Opening Funding (Y20160031), Incitec Pivot Limited, the Australian Government Department of Agriculture through Grains Research (DE150100870), and the Australian Research Council (LP160101134).