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Related Experiment Video

Updated: May 13, 2025

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Modeling soil functions of forested ecosystems.

Evangelia A Koukianaki1, Maria A Lilli1, Dionissis Efstathiou1

  • 1School of Chemical and Environmental Engineering, Technical University of Crete, 73100, Chania, Greece.

Journal of Environmental Management
|May 11, 2025
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Summary

This study used the Integrated Critical Zone (1D-ICZ) model to simulate forest soil functions. The model quantified carbon sequestration and plant growth limitations, crucial for climate change mitigation strategies.

Keywords:
AggregatesBiomass productionCarbon sequestrationEcosystem servicesHydrobiochemistry

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Area of Science:

  • Ecology
  • Environmental Science
  • Earth System Science

Background:

  • Forest ecosystems provide vital services impacted by climate and land use.
  • Ecosystem modeling of linked above- and below-ground processes is key to assessing these impacts.
  • Long-term ecosystem research (LTER) sites offer valuable data for model calibration and validation.

Purpose of the Study:

  • To simulate soil functions in two mature forested ecosystems using the Integrated Critical Zone (1D-ICZ) model.
  • To assess the limitations on plant growth and carbon sequestration in these forests.
  • To quantify key soil functions including gross primary production (GPP) and soil carbon stocks.

Main Methods:

  • Utilized the one-dimensional Integrated Critical Zone (1D-ICZ) model.
  • Initialized and calibrated the model using long-term monitoring data from Zöbelboden (Austria) and Hyytiälä (Finland) LTER sites.
  • Simulated gross primary production (GPP), total soil carbon stock, and soil chemistry components.

Main Results:

  • Zöbelboden soils showed higher C and N content (82.55 tC/ha, 3.76 tN/ha) than Hyytiälä (38.61 tC/ha, 1.33 tN/ha), indicating greater particulate organic matter accumulation.
  • Temperature and light were primary growth-limiting factors at both sites; precipitation was limiting only at Hyytiälä.
  • Quantified soil functions: Zöbelboden GPP (15.6 tC/ha/yr), soil C stock (82.6 tC/ha), N stock (3.8 tN/ha), soil CO2 flux (0.04 tC/ha/yr); Hyytiälä GPP (11.6 tC/ha/yr), soil C stock (38.6 tC/ha), N stock (1.3 tN/ha), soil CO2 flux (0.03 tC/ha/yr).

Conclusions:

  • The 1D-ICZ model effectively simulates soil functions in forested ecosystems.
  • Identified key environmental factors limiting plant growth and carbon sequestration.
  • Findings are significant for understanding forest contributions to climate change mitigation.