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...,

温度敏感性（temperature dependence）是估算天然湿地甲烷（CH4）通量的关键参数，但目前学界对该参数的认知仍存在不足。水位的季节波动与生态系统生产力变化，会导致甲烷产生与氧化过程出现季节差异。本研究提出假说：甲烷通量的温度敏感性存在季节节律。为验证该假说，我们对FLUXNET-CH4数据集开展分析，以明确甲烷通量温度敏感性的季节变化特征。本研究基于气温将全年划分为6个季节，并采用玻尔兹曼-阿伦尼乌斯方程（Boltzmann-Arrhenius equation）计算表观活化能（apparent activation energy），以此评估各季节的甲烷通量温度敏感性。研究结果显示，甲烷通量的温度敏感性随季节呈现单峰变化趋势：表观活化能在初夏达到峰值（0.60 eV），在晚冬降至最低（-0.02 eV）。这种温度敏感性的季节节律具有一致性……
# 天然湿地甲烷通量温度敏感性的季节节律

关联数据集：
期刊名称：Functional Ecology（功能生态学）
期刊代号：FE
印刷版ISSN：0269-8463
网络版ISSN：1365-2435
论文标题：天然湿地甲烷通量温度敏感性的季节节律
作者列表：李金帅；郝天翔；陈鸿洋；萨拉·诺克斯（Sara Knox）；杨萌；陈智；于贵瑞
通讯作者：郝天翔（电子邮箱：[e-mail]）

### 文件与变量说明
**1. ECdata.xlsx 首个工作表中的变量列表：**
* NUM：数据计数
* SITE_ID：通量观测站点ID
* CLASS：湿地类型
* DOM_VEG：优势植被类型
* LATITUDE：站点纬度
* LONGITUDE：站点经度
* YEAR：观测年份
* MONTH：观测月份
* DAY：观测日期
* NUMBER：单年内站点观测数据总数
* TA：气温，单位：摄氏度（℃）
* TS：土壤温度，单位：摄氏度（℃）
* GPP：总初级生产力（Gross Primary Productivity, GPP），单位：克/平方米/天（g/m²/d）
* RE：生态系统呼吸（原文未完整显示）……