1. ABOUT THE DATASET -------------------- Title: Soil physical, chemical and hydrological data from agroforestry plots at Spen Farm, Yorks, UK, 2022-23 Creator(s): Josiah B. Judson[1], Pippa J. Chapman[1], Joseph Holden[1], Marcelo V. Galdos[2] Organisation(s): 1. University of Leeds, 2. Rothamsted Research Rights-holder(s):Unless otherwise stated, Copyright 2024 University of Leeds Publication Year: 2024 Description: Soil and forest floor litter data sampled between 2022 and 2023 at the Spen Farm High Value Timber Agroforestry plots. Trees at the site were planted in 1988, and sampled areas include continuous woodland blocks of three species - sycamore, wild cherry and hazel, along with adjacent arable control blocks. Each block is replicated four times. Soil properties are measured between 0 and 50cm at 10cm intervals, and mineral soil measurements are supplemented by measurements of the forest floor L and combined F and H horizons. The dataset also includes measurements of saturated hydraulic conductivity taken at the soil surface. Cite as: Judson, J. B., Chapman, P. J., Holden, J., Galdos, M. V. (2024): Soil physical, chemical and hydrological data from agroforestry plots at Spen Farm, Yorks, UK, 2022-23. University of Leeds [Dataset] https://doi.org/10.5518/1595. Related publication: Judson, J.B., Chapman, P.J., Holden, J., Galdos, M.V. (2024): Impacts of arable reforestation on soil carbon and nutrients are dependent upon interactions between soil depth and tree species. Catena, 247. https://doi.org/10.1016/j.catena.2024.108465. 2. TERMS OF USE --------------- Copyright 2024 University of Leeds, Josiah Judson, Pippa Chapman, Joseph Holden, Marcelo Galdos. Unless otherwise stated, this dataset is licensed under a Creative Commons Attribution 4.0 International Licence: https://creativecommons.org/licenses/by/4.0/. 3. PROJECT AND FUNDING INFORMATION ---------------------------------- Title: Impacts of arable reforestation on soil carbon and nutrients are dependent upon interactions between soil depth and tree species Dates: May 2022 - Oct 2024 Funding organisation: UKRI NERC[1], Rothamsted Research[2], Woodland Trust (CASE partner), University of Leeds Grant nos.: 1. NE/S007458/1, 2. BB/X010953/1; BBS/E/RH/230003B 4. CONTENTS ----------- File listing 1_soil_litter_data.csv KEY: - treatment_name: corresponds to tree species (Cherry, Sycamore, Hazel), or arable control (Control) - plot_no: replicate block from which data are derived (See related publication) - data_run: Indicates whether sampled in May 2022 (1) or Feb 2023 (2) (See related publication) - top_depth_cm: Upper sample depth. 'L' corresponds to forest floor L horizon, FH corresponds to forest floor combined F and H horizons (See related publication) - bottom_depth_cm: Lower sample depth. 'L' corresponds to forest floor L horizon, FH corresponds to forest floor combined F and H horizons (See related publication) DESCRIPTORS: <none> VARIABLES (unit): - BD (g cm-3): Bulk density corrected for roots and stones > 2mm - Moisture (%): Moisture loss mass percentage following heating to 105°C (See related publication) - LOI (%): Loss on ignition following heating from 105°c to 550°C (See related publication) - Total N (%): Total N derived from combustion analysis (See related publication) - SOC (%): Organic C content derived from combustion analysis (See related publication) - NH4_N (mg kg-1): Plant available N derived from KCl method (See related publication) - NO2_N (mg kg-1): Plant available N derived from KCl method (See related publication) - (NO2_N + NO3_N) (mg kg-1): Plant available N derived from KCl method (See related publication) - NO3_N (mg kg-1): Plant available N derived from KCl method (See related publication) - Total plant-available N (mg kg-1): Plant available N derived from KCl method (See related publication) - Olsen P (mg kg-1): PO4-P content derived from method of Olsen (1954) (See related publication) - Total P (%): Total P content measured by digestion (See related publication) - pH in H2O - pH in CaCl2 - field mass (g): Field-moist mass of litter sample (See related publication) - dry mass (g): Dry mass of litter sample (See related publication) ROWS:204 2_hydrological_data.csv KEY: - site: abbreviated form of plot_no and treatment_name - replicate: replicate identifier code DESCRIPTORS: - plot_no: replicate block from which data are derived (See related publication) - treatment_name: corresponds to tree species (Cherry, Sycamore, Hazel), or arable control (Control) VARIABLES: - Ks (mm hr-1): Saturated hydraulic conductivity determined using method of van Genuchten and Nielsen (1985) (See related publication) 5. METHODS ---------- For a detailed methodology, see publication associated with this dataset: Judson, J.B., Chapman, P.J., Holden, J., Galdos, M.V. (2024): Impacts of arable reforestation on soil carbon and nutrients are dependent upon interactions between soil depth and tree species. Catena, 247. https://doi.org/10.1016/j.catena.2024.108465.