| Issue |
E3S Web Conf.
Volume 639, 2025
The 11th International Conference on Energy Materials and Environmental Engineering (ICEMEE 2025)
|
|
|---|---|---|
| Article Number | 01009 | |
| Number of page(s) | 7 | |
| Section | Environmental Engineering and Applications of New Materials | |
| DOI | https://doi.org/10.1051/e3sconf/202563901009 | |
| Published online | 17 July 2025 | |
Material and Energy Exchange Dynamics in Paddy Fields Across Growth Stages in Liaohe Delta, Northeast China
1 Panjin National Climate Observatory, Liaoning, Panjin 124010, China
2 Shenyang Environmental Research Institute of China Meteorological Administration, Liaoning, Shenyang 110166, China
* Corresponding author’s email: yuanchao_mare@163.com
This study examines the material and energy exchange of rice paddies during different growth stages in the Liaohe Delta, Northeast China, during an unusually warm year (2019). Utilizing eddy covariance data, we focused on four key growth stages: transplanting, jointing, heading, and maturation. The net ecosystem exchange (NEE) peaked during transplanting, shifting from carbon emission to absorption by the heading stage. Sensible heat flux (H) was highest during jointing, while latent heat flux (LE) showed a distinct peak during transplanting, highlighting the dominance of transpiration and evaporation. Photo synthetically active radiation (PAR) and net radiation (NR) were identified as pivotal environmental drivers. Temperature and soil moisture significantly influenced these fluxes, with optimal temperatures enhancing CO2 uptake and higher soil moisture promoting transpiration. The findings contribute to an understanding of the rice paddy ecosystem’s role in carbon cycling and energy balance amidst environmental variations and contribute to informed agricultural practices in the Liaohe River Delta.
© The Authors, published by EDP Sciences, 2025
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.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.