Data for: Multiple factors co-limit short-term in situ soil carbon dioxide emissions

These data describe measurements of soil CO2 efflux collected from four locations over multiannual periods. Each flux measurement is coupled with measurements of surface-soil temperature and moisture that were collected at the same time and place. They also include remotely sensed enhanced vegetation index, and mean daily air temperature records collected by nearby weather stations. Flux measurements are presented as measured, in μmol cm-2 s-1, based on short-term measurements across sites, thus capturing site heterogeneity. Similar measurement protocols were used at each location, of which there were two in Iowa, USA; one in Wisconsin, USA; and one in Costa Rica. The principal experimental treatment in each site was land cover.Commercial licensing enquiries should be directed to the Iowa State University Office of Innovation Commercialization at: [e-mail], or 515-294-4740<b>Change log:</b>V2: Added full citation to article, added figures and captions from article, corrected Creative Commons license information in documentation, added article title and DOI to record, uploaded figure files. MNO

本数据集收录了跨多个年度周期内，于四个采样点位获取的土壤二氧化碳通量（soil CO₂ efflux）实测数据。每条通量实测数据均同步匹配了同一地点、同一时刻获取的表层土壤温度与土壤湿度观测数据。数据集同时包含遥感增强植被指数（Enhanced Vegetation Index）数据，以及邻近气象站采集的逐日平均气温记录。通量数据以原始实测值形式发布，单位为μmol cm⁻² s⁻¹，基于各站点的短期观测数据，可反映点位异质性。各采样点位均采用统一的观测规范，其中美国艾奥瓦州（Iowa）设有2个点位、美国威斯康星州（Wisconsin）设有1个点位，哥斯达黎加设有1个点位。各站点的核心实验处理因素为土地覆盖类型。商业授权咨询事宜请联系艾奥瓦州立大学创新商业化办公室，联系方式：[e-mail]，或515-294-4740。更新日志：V2：补充了论文完整引用信息，添加了论文配图及图注，修正了文档中的知识共享（Creative Commons）许可信息，将论文标题与数字对象唯一标识符（DOI）补充至数据集记录中，并上传了配图文件。MNO