Seasonality of temperature dependence of methane fluxes from natural wetlands

Temperature dependence is a crucial parameter in estimating methane (CH4) fluxes from natural wetlands, yet our understanding of this parameter remains inadequate. Seasonal fluctuations in water levels and ecosystem productivity lead to seasonal differences in CH4 production and oxidation. We hypothesized the existence of seasonality in the temperature dependence of CH4 fluxes. To validate this hypothesis, we analyzed the FLUXNET-CH4 dataset to determine the seasonal variation in temperature dependence of CH4 fluxes. We divided the year into six seasons based on air temperature and assessed the temperature dependence for each season using the apparent activation energy calculated by the Boltzmann-Arrhenius equation. Our results showed that temperature dependence showed a unimodal trend with seasons, with the apparent activation energy peaking in early summer (0.60 eV), and reaching its lowest point in late winter (-0.02 eV). This seasonal pattern of temperature dependence was consistent..., , # Seasonality of temperature dependence of methane fluxes from natural wetlands

Data associated with:

Journal Name: Functional Ecology
Journal Code: FE
Print ISSN: 0269-8463
Online ISSN: 1365-2435

Title: Seasonality of temperature dependence of methane fluxes from natural wetlands

Authors: Li, Jinshuai; Hao, Tianxiang; Chen, Hongyang; Knox, Sara; Yang, Meng; Chen, Zhi; Yu, Guirui

Contact Author: Tianxiang Hao (E-mail: [[e-mail]](mailto:[e-mail]))

### Description of files and variables

**1. List of variables in sheet 1 of ECdata.xlsx:**

* NUM: Data counting
* SITE_ID: Flux Site ID
* CLASS: Wetland category
* DOM_VEG: Vegetation category
* LATITUDE: Site latitude
* LONGITUDE: Site longitude
* YEAR: Measurement year
* MONTH: Measurement month
* DAY: Measurement day
* NUMBER: Data counting at stations within a year
* TA: Air temperature, unit: ℃
* TS: Soil temperature, unit: ℃
* GPP: Gross primary productivity, unit: g/m2/d
* RE: Rcosystem res...,