The effect of temperature and moisture on the source of N2O and contributions from ammonia oxidizers in an agricultural soil
Rui Liu, Helen L Hayden, Helen Suter, Hangwei Hu, Shu Kee Lam, Jizheng He, Pauline M Mele, Deli Chen
BIOLOGY AND FERTILITY OF SOILS | SPRINGER | Published : 2017
In recent years, identification of the microbial sources responsible for soil NâO production has substantially advanced with the development of isotope enrichment techniques, selective inhibitors, mathematical models and the discoveries of specific N-cycling functional genes. However, little information is available to effectively quantify the NâO produced from different microbial pathways (e.g. nitrification and denitrification). Here, a Â¹âµN-tracing incubation experiment was conducted under controlled laboratory conditions (50, 70 and 85% water-filled pore space (WFPS) at 25 and 35Â Â°C). Nitrification was the main contributor to NâO production. At 50, 70 and 85% WFPS, nitrificatio..View full abstract
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Awarded by Australian Research Council
The authors would like to acknowledge the financial support by Incitec Pivot, the 424 Australian Government Department of Agriculture through the Grains Research and 425 Development Corporation, and Australian Research Council (DE150100870, DP160101028).