Global database on dissolved carbon in soil solution, including ancillary information on a range of potential drivers
type: Dataset
creator: Joep Langeveld
creator: Alexander F Bouwman
  type: Person
  family name: Bouwman
  given name: Alexander F
creator: Wim Joost van Hoek
  type: Person
  family name: van Hoek
  given name: Wim Joost
creator: Lauriane Vilmin
  type: Person
  family name: Vilmin
  given name: Lauriane
creator: A H W Beusen
creator: José M Mogollón
creator: Jack J Middelburg
publisher: PANGAEA
  type: Organization
  disambiguating description: Data Publisher for Earth & Environmental Science
included in data catalog: PANGAEA
  type: DataCatalog
  disambiguating description: Data Publisher for Earth & Environmental Science
date published: 2020-01-22
description: Dissolved carbon leaching in and from soils plays an important role in C transport along the terrestrial-aquatic continuum. However, a global overview and analysis of dissolved carbon in soil solutions, covering a wide range of vegetation types and climates, is lacking. We compiled a global database on annual average dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) in soil solutions, including potential governing factors, with 762 entries from 351 different sites covering a range of climate zones, land cover types and soil classes. Using this database we develop regression models to calculate topsoil concentrations, and concentrations vs. depth in the subsoil at the global scale. For DIC, the lack of a roportional globally distributed cover inhibits analysis on a global scale. […]
abstract: Dissolved carbon leaching in and from soils plays an important role in C transport along the terrestrial-aquatic continuum. However, a global overview and analysis of dissolved carbon in soil solutions, covering a wide range of vegetation types and climates, is lacking. We compiled a global database on annual average dissolved organic carbon (DOC) and dissolved inorganic carbon (DIC) in soil solutions, including potential governing factors, with 762 entries from 351 different sites covering a range of climate zones, land cover types and soil classes. Using this database we develop regression models to calculate topsoil concentrations, and concentrations vs. depth in the subsoil at the global scale. For DIC, the lack of a roportional globally distributed cover inhibits analysis on a global scale. For DOC, annual average concentrations range from 1.7 to 88.3 (median=25.27) mg C/L for topsoils (n=255) and from 0.42 to 372.1 (median=5.50) mg C/L for subsoils (n=285, excluding lab incubations). Highest topsoil values occur in forests of cooler, humid zones. In topsoils, multiple regression showed that precipitation is the most significant factor. Our global topsoil DOC model (R2=0.36) uses precipitation, soil class, climate zone and land cover type as model factors. Our global subsoil model describes DOC concentrations vs. depth for different USDA soil classes (overall R2=0.45). Highest subsoil DOC concentrations are calculated for Histosols.
size: QuantitativeValue
  value: 7.8
  unit text: MBytes
keywords: Carbon leaching; database; DIC; dissolved carbon; DOC; global model; soil carbon; soil solution; vadose zone
comment: This is the Supplementary Information (SI) in addition to the article 'Global database and model on dissolved carbon in soil solution' by Langeveld et al. Below a brief overview of the SI content is given. For questions, please don't hestitate to contact the corresponding author, Joep Langeveld (j.j.langeveld@uu.nl & joeplangeveld@gmail.com). SI content SI_1 -The database on dissolved C in soil solution -The bibliography of the literature used in the database -Instructions file (see further this file) SI_2 -netcdf with the modelled annual average DOC concentration (mgC/L) in topsoil -netcdf with the modelled annual average DOC concentration (mgC/L) in subsoil(1m) The modelled DOC concentration in topsoil and subsoil are provided as five-yearly datasets on grid for the period 1970-2000. Non-land grid cells are masked. For subsoils, a few cells report 'nan'; then, no infiltration occurs due to only land cover with ice or rock. The data can be opened for analysis in any programming language (e.g. python) or for quick visualisation with e.g. Panoply (https://www.giss.nasa.gov/tools/panoply/) SI_3 -fig_SI3.1 -fig_SI3.2 Boxplots showing top and subsoil DOC concentration (mg C/L) data distributed over sub-climate zones according to Kottek et al. (2006) (fig_SI3.1) and land cover groups (fig_SI3.2). Figures are similar to figure 4b&c, but exclude data for Histosols.Laboratory incubation data are excluded, n=469. Boxplot bars are medians. Whiskers extend up to 1.5 times the interquartile range (IQR) from the lower and upper quartile, unless exceeding the minimum or maximum. Circles are values exceeding the whiskers. SI_4 -statistical_tests Details statistical tests mentioned in the article, including the corresponding text. SI_5 -13 figures Subsoil regressions for DOC relative to the topsoil, for every USDA soil class, except Mollisols. Corresponding numbers are shown in table 4. SI_6 Single regression of C/N ratio vs DOC concentrations from the database, for only data from …
license: https://creativecommons.org/licenses/by/4.0/
conditions of access: unrestricted
is accessible for free: true
language: en
distribution: DataDownload
  encoding format: application/zip

Joep Langeveld
type: Person
family name: Langeveld
given name: Joep

A H W Beusen
type: Person
family name: Beusen
given name: A H W

José M Mogollón
type: Person
family name: Mogollón
given name: José M

Jack J Middelburg
type: Person
family name: Middelburg
given name: Jack J

Estimating dissolved carbon concentrations in global soils: a global database and model
type: CreativeWork
type: PublicationIssue
creator: Joep Langeveld
creator: Alexander F Bouwman
  type: Person
  family name: Bouwman
  given name: Alexander F
creator: Wim Joost van Hoek
  type: Person
  family name: van Hoek
  given name: Wim Joost
creator: Lauriane Vilmin
  type: Person
  family name: Vilmin
  given name: Lauriane
creator: A H W Beusen
creator: José M Mogollón
creator: Jack J Middelburg
date published: 2020
issue number: 2(10)
pagination: 1626
is part of: SN Applied Sciences
is based on: Global database on dissolved carbon in soil solution, including ancillary information on a range of potential drivers