Journal article

Measurement and modeling of nitrous and nitric oxide emissions from a tea field in subtropical central China

Dan Chen, Yong Li, Cong Wang, Xiaoqing Fu, Xinliang Liu, Jianlin Shen, Yi Wang, Runlin Xiao, De Li Liu, Jinshui Wu

Nutrient Cycling in Agroecosystems | SPRINGER | Published : 2017

Abstract

Tea fields represent an important source of nitrous oxide (N O) and nitric oxide (NO) emissions due to high nitrogen (N) fertilizer applications and very low soil pH. To investigate the temporal characteristics of N O and NO emissions, daily emissions were measured over 2½ years period using static closed-chamber/gas chromatograph and chemiluminescent measurement system in a tea field of subtropical central China. Our results revealed that N O and NO fluxes showed similar temporal trends, which were generally driven by temporal variations in soil temperature and soil moisture content and were also affected by fertilization events. The measured average annual N O and NO emissions were 10.9 an..

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Grants

Awarded by National Natural Science Foundation of China


Awarded by National Basic Research Program of China


Funding Acknowledgements

This research was financially supported by the National Natural Science Foundation of China (41671243) and the National Basic Research Program of China (2012CB417105).