Data set for "Overstory dynamics regulate the spatial variability in forest-floor CO2 fluxes across a managed boreal forest landscape"

This data set is a compilation of forest stand characteristics, forest-floor environmental conditions, soil properties, ecosystem carbon stocks, and annual forest-floor CO2 fluxes. The data set is composed by 3-year mean annual values obtained from biometric- and chamber-based flux measurements conducted during the period 2016–2018. Negative values of forest-floor CO2 fluxes indicate carbon uptake and positive values indicate carbon release. Data were collected in 50 forest stands within the Krycklan Catchment Study (https://www.slu.se/Krycklan), a multi-scale long-term monitored boreal catchment spanning 68 km2 in northern Sweden. Selected forest stands encompassed different soil types (sediment vs. till), dominant tree species (pine vs. spruce), and age classes (from initiation to old-growth stands). Variables, units, and definitions are found in the 1_metadata_Martínez-García_et_al._forest-floor_CO2_fluxes.xlsx file More details can be found in Martínez-García et al. (2022) Overstory dynamics regulate the spatial variability in forest-floor CO2 fluxes across a managed boreal forest landscape. Agricultural and Forest Meteorology. 318: 108916. https://doi.org/10.1016/j.agrformet.2022.108916 Contact information: Ph.D. Eduardo Martínez García ([e-mail], [e-mail]) Professor Matthias Peichl ([e-mail]) Department of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Skogsmarksgränd 17, SE-901 83, Umeå, Sweden本数据集汇集了林分特征、林地环境条件、土壤属性、生态系统碳储量以及年度林地二氧化碳通量相关数据。所有数据为2016-2018年间通过生物计量测量与箱式通量测量获得的3年平均年度值。其中，林地二氧化碳通量为负值时代表碳吸收，正值则代表碳释放。数据采集于瑞典北部面积68平方千米的多尺度长期监测寒带针叶林集水区——克里克兰集水区研究（Krycklan Catchment Study，https://www.slu.se/Krycklan）内的50个林分。所选林分涵盖了不同土壤类型（沉积土与冰碛土）、优势树种（松树与云杉）以及林分年龄层级（从幼林萌生到老龄成熟林）。 变量、单位及定义详见`1_metadata_Martínez-García_et_al._forest-floor_CO2_fluxes.xlsx`文件。 更多详细信息可参阅Martínez-García等人（2022）发表于《农业与森林气象学（Agricultural and Forest Meteorology）》的研究论文《林冠层动态调控经营型寒带针叶林景观内林地二氧化碳通量的空间变异》，该文载于第318卷，页码108916，DOI：10.1016/j.agrformet.2022.108916。 联系方式： 瑞典农业科学大学（Swedish University of Agricultural Sciences，SLU）森林生态与管理系，地址：Skogsmarksgränd 17, SE-901 83, 于默奥，瑞典 - 爱德华多·马丁内斯·加西亚博士：[e-mail]，[e-mail] - 马蒂亚斯·派希教授：[e-mail]