Root Shoot Database

The root shoot database is a collection of literature data gathered over the space of a year covering studies up until the end of 2022. The primary driver for the development of the root shoot database was to provide root and shoot estimates for key European crops. The specific criteria for a study to be included in the data base are the following:

Overall criteria for a study to qualify:

1)      Contain root and shoot estimates and/or RS ratios

2)      Originate from annual and perennial crops grown in Europe (according to list of countries defined by EJP Soil)

3)      Include a minimum of necessary meta-data

4)      Originates from field studies (i.e. pot studies were excluded because of artificial effects on roots)

During the initial literature survey, a range of existing databases were assessed to identify suitable articles for inclusion in this analysis. This included existing data collections, data from partners and literature review:

•       Data from Martin Bolinder’s (SLU) collection

•       Data from several project partners (From France, Denmark, Portugal, Switzerland)

•       GrooT and TRY database screening

In addition to gathering data from published articles, where appropriate, contact was made with corresponding authors to resolve uncertainties and fill gaps in the associated meta data. This resulted in a library of assessments for each country and entries in the RS database. In total we identified 23 studies resulting in 451 individual measurements across 11 countries in Europe (including the UK).

根冠数据库（root shoot database）是一套历时一年收集的文献数据集，收录的研究成果均截至2022年底。开发该数据库的核心初衷，是为欧洲主要农作物提供根系与冠部生物量的估算值。纳入本数据库的研究需符合以下具体标准：

研究入选的通用标准：
1) 包含根系、冠部生物量估算值或根冠比（RS ratio）
2) 研究对象为欧洲种植的一年生与多年生农作物（遵循EJP Soil划定的欧洲国家名录）
3) 包含至少必要的元数据（meta-data）
4) 基于田间试验开展（因盆栽试验会对根系造成人为干预影响，故予以排除）

在初始文献调研阶段，本研究对多类现有数据库进行了评估，以筛选适用于本次分析的文献，涵盖既有数据集、合作方提供的数据及综述类文献：
• 马丁·博林德（Martin Bolinder）所在的瑞典农业科学大学（SLU）数据集
• 多个项目合作方提供的数据（来自法国、丹麦、葡萄牙、瑞士）
• GrooT与TRY数据库的筛选结果

除从已发表文献中收集数据外，研究团队在适当时机联系了通讯作者，以解决数据疑点并补全相关元数据的缺失项。最终，我们构建了覆盖欧洲各国的评估库，并完成了根冠数据库的条目录入。本次研究共筛选出23项有效研究，涵盖欧洲11个国家（含英国）的451组独立测量数据。