AgEvidence US: Agro-environmental responses of conservation agricultural practices published from 1980 to 2020

AgEvidence US is a database of the multiple benefits and trade-offs associated with conservation agricultural practices in the United States Midwest. The purpose of these data are to provide organizations, policy makers, scientists, and other interested parties with all the available evidence related to the diversity and magnitude of agro-environmental impacts that occur following the implementation of conservation practices. The conservation practices we focused on include winter cover crops, conservation tillage, strategic nutrient management, and early season pest management in corn and soybean systems. Data were extracted from peer-reviewed literature published between 1980 and 2020 with experimental field sites located in at least one of the following states: Illinois, Indiana, Iowa, Kansas, Michigan, Minnesota, Missouri, North Dakota, Nebraska, Ohio, South Dakota, and Wisconsin. Our dataset includes all response variables reported in each paper where there are isolated comparisons of a conservation practice (e.g. soil nitrate content following winter fallow and following winter cover crop). With this approach, we were able to capture the state-of-knowledge for a wide diversity of response variables and identify where we lack knowledge.

AgEvidence US是针对美国中西部地区保护性农业实践的多重效益与权衡关系构建的专业数据库。本数据集旨在为各类机构、政策制定者、科研人员及其他相关方提供所有可获取的研究证据，用以阐明保护性农业实践实施后所产生的农业环境影响的多样性与强度。本次研究聚焦的保护性农业实践涵盖玉米-大豆种植体系中的冬季覆盖作物、保护性耕作、精准养分管理以及季早期害虫防治措施。本数据集的数据提取自1980年至2020年间发表的同行评议文献，其实验田块至少设置于以下12个州之一：伊利诺伊州（Illinois）、印第安纳州（Indiana）、艾奥瓦州（Iowa）、堪萨斯州（Kansas）、密歇根州（Michigan）、明尼苏达州（Minnesota）、密苏里州（Missouri）、北达科他州（North Dakota）、内布拉斯加州（Nebraska）、俄亥俄州（Ohio）、南达科他州（South Dakota）以及威斯康星州（Wisconsin）。本数据集纳入了所有文献中报道的、针对单一保护性农业实践的响应变量（例如冬季休耕与冬季覆盖作物种植后的土壤硝态氮含量对比）。通过该方法，本研究得以全面覆盖当前各类响应变量的研究认知现状，并明确存在研究空白的领域。