BAWLD-CH4: Methane Fluxes from Boreal and Arctic Ecosystems

These are the data files for the Boreal-Arctic Wetland and Lake Database methane (CH4) flux dataset (BAWLD-CH4). The dataset is a synthesis of reported methane fluxes from natural ecosystems in the Boreal-Arctic region. The dataset is split into two components- 1) terrestrial methane fluxes (wetland and non-wetland) and 2) aquatic methane fluxes (lakes and ponds). BAWLD-CH4 was constructed in parallel with a compatible land cover dataset (Olefeldt et al. 2021) sharing the same land cover classes to enable refined bottom-up assessments of annual CH4 emissions from the Boreal-Arctic region. BAWLD-CH4 includes information on site-level, surface CH4 fluxes, but also on study design (measurement method, timing, and frequency) and site characteristics (vegetation, climate, hydrology, soil, and sediment types, permafrost conditions, lake size and depth, and BAWLD land cover class). For more details on the variables collected see the Metadata files. The following files are provided: 1) BAWLD_CH4_Terrestrial (.csv file). This file includes the data for terrestrial methane fluxes and associated variables 2) BAWLD_CH4_Aquatic (.csv file). This file includes the data for aquatic methane fluxes and associated variables

本数据集隶属于北方-北极湿地与湖泊数据库甲烷（CH₄）通量数据集（BAWLD-CH4）。该数据集整合汇编了北方-北极地区自然生态系统已公开报道的甲烷通量观测数据，分为两大组成部分：1）陆地甲烷通量（涵盖湿地与非湿地生态系统）；2）水生甲烷通量（涵盖湖泊与池塘）。BAWLD-CH4与一套兼容的土地覆盖数据集（Olefeldt等，2021）同步构建，二者采用统一的土地覆盖分类体系，可实现对北方-北极地区年度甲烷排放的精细化自下而上评估。本数据集不仅包含样地尺度的地表甲烷通量信息，还涵盖研究设计相关内容（观测方法、时间与频次）以及样地特征信息（植被、气候、水文、土壤与沉积物类型、永久冻土状况、湖泊面积与水深，以及BAWLD土地覆盖分类）。关于所采集变量的详细说明，请参阅元数据文件。本次提供的文件如下：1）BAWLD_CH4_Terrestrial（.csv格式文件）：收录陆地甲烷通量及其相关变量数据；2）BAWLD_CH4_Aquatic（.csv格式文件）：收录水生甲烷通量及其相关变量数据。

搜集汇总

背景与挑战

背景概述

该数据集是一个关于北极和北方生态系统甲烷通量的综合数据集，分为陆地和水生两部分，包含详细的站点特征和研究设计信息，旨在支持对该区域甲烷排放的精细评估。