Methane emissions of ditches of boreal forestry-drained peatlands

Six datasets regarding our study on methane emissions of ditches of boreal forestry-drained peatlands of Finland: Dataset 1: Accepted methane fluxes analysed via manual chamber technique from ditches of 21 boreal forestry-drained peatland study areas located in Finland. Dataset 2: Temperature within ditches of 3 boreal forestry-drained peatlands (Ränskälänkorpi, Lettosuo and Paroninkorpi) studied in 2021. Dataset 3: Relative water table level (relative to the level in the beginning of June 2021) in ditches of 3 boreal forestry-drained peatlands (Ränskälänkorpi, Lettosuo and Paroninkorpi) studied in 2021. Dataset 4: Yearly methane emission factors calculated for different types of ditches in the study areas. Dataset 5: Tested random forest models' variables and their mean decrease in accuracy, and models' error rates in classifying boreal peatland forest ditches into moss-covered and moss-free categories. Dataset 6: Tested random forest models (as zipped .RData files) to classify boreal peatland forest ditches into moss-covered and moss-free categories.本数据集集合包含6组与芬兰寒带林业排水泥炭地沟渠甲烷排放研究相关的数据： Dataset 1：芬兰21处寒带林业排水泥炭地研究区域沟渠的经手动箱式技术分析确认的甲烷通量（methane fluxes）数据。 Dataset 2：2021年针对3处寒带林业排水泥炭地（Ränskälänkorpi、Lettosuo及Paroninkorpi）沟渠的水温监测数据。 Dataset 3：2021年针对上述3处寒带林业排水泥炭地沟渠的地下水位相对高度（以2021年6月初水位为基准）数据。 Dataset 4：针对研究区域内不同类型沟渠计算得到的年度甲烷排放系数（methane emission factors）数据。 Dataset 5：用于将寒带泥炭林沟渠划分为覆苔藓与无苔藓类别的已测试随机森林（random forest）模型变量及其准确率平均下降量（mean decrease in accuracy），以及模型分类错误率数据。 Dataset 6：用于将寒带泥炭林沟渠划分为覆苔藓与无苔藓类别的已测试随机森林模型，以压缩的.RData文件格式存储。