Soil temperature controls gaseous nitrogen losses through nitrous oxide (N 2 O) and ammonia (NH 3) fluxes. Eight surface soils from agricultural fields across the United States were incubated at 10˚C, 20˚C, and 30˚C, and N 2 O and NH 3 flux were measured twice a week for 91 and 47 d, respectively. Changes in cumulative N 2 O and NH 3 flux and net N mineralization at three temperatures were fitted to calculate Q 10 using the Arrhenius equation. For the majority of soils, Q 10 values for the N 2 O loss ranged between 0.23 and 2.14, except for Blackville, North Carolina (11.4) and Jackson, Tennessee (10.1). For NH 3 flux, Q 10 values ranged from 0.63 (Frenchville, Maine) to 1.24 (North Bend, Nebraska). Net soil N mineralization-Q 10 ranged from 0.96 to 1.00. Distribution of soil organic carbon and total soil N can explain the variability of Q 10 for N 2 O loss. Understanding the Q 10 variability of soil N dynamics will help us to predict the N loss.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.