The effect of drainage on the fine root biomass, production, and turnover in hemiboreal old-growth forests on organic soils

Information on the capacity of organic soils to capture and store carbon in old-growth forests in the hemiboreal forest zone is scarce and fragmented. However, fine root data can provide valuable insights into soil carbon fluxes. Thus, the aim of the current study was to provide estimates of the fine root biomass (FRB), fine root production (FRP), and fine root turnover (FRT) rate by tree species and other functional groups in old-growth (stand age 131–179 years) forests on mesotrophic organic soils dominated by Scots pine (Pinus sylvestris L.), with (drained mesotrophic organic soil) and without (undrained mesotrophic organic soil) the effects of forest drainage. The sequential soil coring method was used to estimate the FRB and FRP. The total FRB (sum of the FRB of all functional groups) was significantly higher in the undrained sites (6.8±0.3 t ha 1) than in the drained sites (3.97±0.1 t ha 1). The FRB of Scots pine in the undrained forest was significantly higher (1.7±0.1 t ha 1) th..., , , # The effect of drainage on the fine root biomass, production, and turnover in hemiboreal old-growth forests on organic soils ## #GWL\_temp.csv This file contains data on study site soil temperature and groundwater level ## Description of the data and file structure Date - Sampling date Site - Study object name FT - Forest type (ND - not drained, KS - drained) Year - Sampling year Cycle - Sampling campaign number in specific sampling year PL - Sample plot of study object (1-3) Groundwater - Groundwater level depth from the ground surface, cm Soil_temp_10cm - Soil temperature at 10cm depth, °C Soil_temp_20cm - Soil temperature at 20cm depth, °C Soil_temp_30cm - Soil temperature at 30cm depth, °C Soil_temp_40cm - Soil temperature at 40cm depth, °C --- ## #Soil\_data.csv This file contains data of study site soil analysis ## Description of the data and file structure Year - Sampling year Date - Sampling date Place - Study objects name FT - Forest type (ND - not drained, KS - ...半寒带森林带（hemiboreal forest zone）内原始老龄林（old-growth forests）有机土壤（organic soils）固碳能力的相关研究信息稀缺且零散。然而，细根数据可为土壤碳通量研究提供极具价值的参考。因此，本研究旨在针对以欧洲赤松（Pinus sylvestris L.）为优势树种的中营养型有机土壤（mesotrophic organic soils）上的老龄林（林分年龄131–179年），按树种及其他功能群估算细根生物量（fine root biomass, FRB）、细根生产量（fine root production, FRP）以及细根周转率（fine root turnover, FRT），其中样地分别经历森林排水（forest drainage）（排水型中营养有机土壤）与未经历森林排水（未排水型中营养有机土壤）两种处理。本研究采用连续土壤钻取法（sequential soil coring method）估算FRB与FRP。总细根生物量（所有功能群细根生物量之和）在未排水样地（6.8±0.3 吨·公顷⁻¹）显著高于排水样地（3.97±0.1 吨·公顷⁻¹）。未排水林分中欧洲赤松的细根生物量显著更高（1.7±0.1 吨·公顷⁻¹）……，，，# 有机土壤上半寒带原始老龄林排水对细根生物量、生产量及周转率的影响 #GWL_temp.csv 本文件包含研究样地的土壤温度与地下水位数据 ## 数据与文件结构说明 Date - 采样日期 Site - 研究对象名称 FT - 森林类型（Forest type）（ND：未排水，KS：已排水） Year - 采样年份 Cycle - 特定采样年度内的采样批次编号 PL - 研究样地编号（1-3） Groundwater - 地下水位埋深（距地表，单位：厘米） Soil_temp_10cm - 10cm深度土壤温度（单位：摄氏度） Soil_temp_20cm - 20cm深度土壤温度（单位：摄氏度） Soil_temp_30cm - 30cm深度土壤温度（单位：摄氏度） Soil_temp_40cm - 40cm深度土壤温度（单位：摄氏度） --- ## #Soil_data.csv 本文件包含研究样地的土壤分析数据 ## 数据与文件结构说明 Year - 采样年份 Date - 采样日期 Place - 研究对象名称 FT - 森林类型（Forest type）（ND：未排水，KS：……）