| Issue |
E3S Web Conf.
Volume 118, 2019
2019 4th International Conference on Advances in Energy and Environment Research (ICAEER 2019)
|
|
|---|---|---|
| Article Number | 01052 | |
| Number of page(s) | 4 | |
| Section | Energy Engineering, Materials and Technology | |
| DOI | https://doi.org/10.1051/e3sconf/201911801052 | |
| Published online | 04 October 2019 | |
Methane Flux from a Subtropical Rice Field
School of Geography and Tourism, Guangdong University of Finance and Economics, 510320 Guangzhou, China
* Corresponding author: liuhuildh8086@126.com
It has been confirmed that rice fields contribute a lot to atmospheric methane. The object of this research was to analyse the diurnal changes of CH4 fluxes from a rice field in southern subtropical China in early rice season. The measuring device was a modification of a closed static chamber and gas chromatography. Samples of CH4 were collected from treatments with rice crop plot and bare soil plot at the same time. The results indicated that there are two peaks of variation in diurnal CH4 emissions during the growing season of rice. The average CH4 fluxes in the field appeared in the order of maturity stage (1.96 ± 0.33), booting stage (0.13 ± 0.01) and post-harvest stage (-0.01 ± 0.02) (mg·m-2·h-1). At booting stage, average flux of CH4 was much higher in the plot with rice plants than that of bare soil plot (p<0.01). Soil temperature had no significant effect on CH4 emissions at any stage in this study. The results showed that soil moisture and rice plants significantly affected CH4 flux in rice field.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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