Reference database for literature survey of methods currently used for measuring greenhouse gas fluxes

This dataset is a reference database for literature survey of methods currently used for measuring greenhouse gas (GHG) fluxes.

To make this systematic literature analysis of GHG flux measurement methods, we searched the Web of Science database by topic using the following search string:

TS = ((((greenhouse gas* AND flux*) OR (greenhouse gas* AND emission*)) AND measure*) OR (((greenhouse gas* AND flux*) OR (greenhouse gas* AND emission*)) AND map*))

The string was selected after testing multiple word combinations and making preliminary assessments of titles to ensure that the search was sufficiently broad to include a variety of methods measuring GHGs in different environments. The literature search which defined the frame of this review was performed on 26 July 2020 and yielded 11 992 papers published between 1990 and July 2020. Sub-searches on known common measurement approaches e.g. eddy covariance, remote sensing, flux chambers, etc gave 200—>700 hits each, confirming that they were well represented.

The 11 992 hits were divided into groups of 500 papers (the last group containing 492). Six researchers divided the papers and performed a title scan. The papers were classified according to the likelihood that the paper would include detailed method description(s) (by the priority codes: 0 = not likely, 1 = unclear, 2 = probably as part of methods description, 3 = high—methods in focus, and 4 = very high—method development/comparisons in clear focus). For the 3481 papers with priority codes 2–4, the abstracts were read. A focus on GHG flux measurements was confirmed in 2041 papers which were assessed further to retrieve information on flux types, method class, environment, gas, spatial scale, mobility, platform, biome and continent – and it is these papers that are listed in the datafile.

The dataset was originally published in DiVA and moved to SND in 2024.

本数据集是面向当前温室气体（GHG）通量测量方法开展文献调研的参考数据库。
为开展GHG通量测量方法的系统性文献分析，我们以主题词检索方式在Web of Science数据库中执行了如下检索式：
TS = ((((greenhouse gas* AND flux*) OR (greenhouse gas* AND emission*)) AND measure*) OR (((greenhouse gas* AND flux*) OR (greenhouse gas* AND emission*)) AND map*))
该检索式经多次词组合测试并对标题进行初步评估后确定，以确保检索范围足够宽泛，能够涵盖不同环境下温室气体测量的各类方法。本次划定本综述框架的文献检索于2020年7月26日完成，共检索得到1990年至2020年7月间发表的11992篇论文。针对涡度协方差法（eddy covariance）、遥感（remote sensing）、通量箱法（flux chambers）等常见主流测量方法的子检索，每类均获得200至700余条检索结果，证实这些方法均被充分覆盖。
本次检索得到的11992条结果被分为每500篇论文一组（最后一组含492篇）。6名研究人员对论文进行分组并开展标题筛查。研究人员依据论文包含详细方法描述的可能性，采用优先级编码对论文进行分类：0代表极不可能包含相关方法描述，1代表无法确定，2代表可能作为方法描述的一部分，3代表优先级较高——方法为研究重点，4代表优先级极高——方法开发/对比为明确研究重点。
针对优先级编码为2至4的3481篇论文，研究人员读取了其摘要。其中2041篇论文被确认聚焦GHG通量测量，研究人员进一步对这些论文进行评估，提取了通量类型、方法类别、研究环境、目标气体、空间尺度、移动性、搭载平台、生物群落及所在大洲等信息，数据文件中收录的正是这部分论文。
本数据集最初发布于DiVA平台，并于2024年迁移至SND平台。