An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum

R. Dainese, A. Belli, T. Fourcaud, A. Tarantino

Research output: Contribution to conferencePaper

Abstract

This paper presents an experimental setup to study the SPAC (Soil-Plant-Atmosphere Continuum) and the mechanisms of water extraction by vegetation. The infiltration column was equipped with TDR probes and High-Capacity Tensiometers to monitor the profiles of volumetric water content and suction respectively. A balance was used to monitor the evaporation/evapotranspiration rate. Experiments were run in parallel on a bare sample and a soil sample vegetated with grass respectively. Two different evaporation/evapotranspiration regimes were imposed by considering natural and forced ventilation. The experimental setup was able to cap-ture the transition from the energy-limited to the water–limited regime. The profiles of water content and suc-tion recorded by TDR probes and the high-capacity tensiometers where coherent with the different stages in the evapotranspiration process. The response of the TDR probes has also been successfully validated by com-parison with measurements of water content by oven-drying.

Conference

Conference7th International Conference on Unsaturated Soils
Abbreviated titleUNSAT2018
CountryChina
CityHong Kong
Period3/08/185/08/18
Internet address

Fingerprint

Evapotranspiration
Infiltration
Water content
Soils
Evaporation
Ovens
Ventilation
Water
Drying
Experiments

Keywords

  • infiltration column
  • unsaturated soil
  • soil-plant-atmosphere continuum
  • soil atmosphere interaction
  • evapo transpiration

Cite this

Dainese, R., Belli, A., Fourcaud, T., & Tarantino, A. (2018). An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum. Paper presented at 7th International Conference on Unsaturated Soils, Hong Kong, China.
Dainese, R. ; Belli, A. ; Fourcaud, T. ; Tarantino, A. / An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum. Paper presented at 7th International Conference on Unsaturated Soils, Hong Kong, China.6 p.
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abstract = "This paper presents an experimental setup to study the SPAC (Soil-Plant-Atmosphere Continuum) and the mechanisms of water extraction by vegetation. The infiltration column was equipped with TDR probes and High-Capacity Tensiometers to monitor the profiles of volumetric water content and suction respectively. A balance was used to monitor the evaporation/evapotranspiration rate. Experiments were run in parallel on a bare sample and a soil sample vegetated with grass respectively. Two different evaporation/evapotranspiration regimes were imposed by considering natural and forced ventilation. The experimental setup was able to cap-ture the transition from the energy-limited to the water–limited regime. The profiles of water content and suc-tion recorded by TDR probes and the high-capacity tensiometers where coherent with the different stages in the evapotranspiration process. The response of the TDR probes has also been successfully validated by com-parison with measurements of water content by oven-drying.",
keywords = "infiltration column, unsaturated soil, soil-plant-atmosphere continuum, soil atmosphere interaction, evapo transpiration",
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Dainese, R, Belli, A, Fourcaud, T & Tarantino, A 2018, 'An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum' Paper presented at 7th International Conference on Unsaturated Soils, Hong Kong, China, 3/08/18 - 5/08/18, .

An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum. / Dainese, R.; Belli, A.; Fourcaud, T.; Tarantino, A.

2018. Paper presented at 7th International Conference on Unsaturated Soils, Hong Kong, China.

Research output: Contribution to conferencePaper

TY - CONF

T1 - An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum

AU - Dainese, R.

AU - Belli, A.

AU - Fourcaud, T.

AU - Tarantino, A.

PY - 2018/8/3

Y1 - 2018/8/3

N2 - This paper presents an experimental setup to study the SPAC (Soil-Plant-Atmosphere Continuum) and the mechanisms of water extraction by vegetation. The infiltration column was equipped with TDR probes and High-Capacity Tensiometers to monitor the profiles of volumetric water content and suction respectively. A balance was used to monitor the evaporation/evapotranspiration rate. Experiments were run in parallel on a bare sample and a soil sample vegetated with grass respectively. Two different evaporation/evapotranspiration regimes were imposed by considering natural and forced ventilation. The experimental setup was able to cap-ture the transition from the energy-limited to the water–limited regime. The profiles of water content and suc-tion recorded by TDR probes and the high-capacity tensiometers where coherent with the different stages in the evapotranspiration process. The response of the TDR probes has also been successfully validated by com-parison with measurements of water content by oven-drying.

AB - This paper presents an experimental setup to study the SPAC (Soil-Plant-Atmosphere Continuum) and the mechanisms of water extraction by vegetation. The infiltration column was equipped with TDR probes and High-Capacity Tensiometers to monitor the profiles of volumetric water content and suction respectively. A balance was used to monitor the evaporation/evapotranspiration rate. Experiments were run in parallel on a bare sample and a soil sample vegetated with grass respectively. Two different evaporation/evapotranspiration regimes were imposed by considering natural and forced ventilation. The experimental setup was able to cap-ture the transition from the energy-limited to the water–limited regime. The profiles of water content and suc-tion recorded by TDR probes and the high-capacity tensiometers where coherent with the different stages in the evapotranspiration process. The response of the TDR probes has also been successfully validated by com-parison with measurements of water content by oven-drying.

KW - infiltration column

KW - unsaturated soil

KW - soil-plant-atmosphere continuum

KW - soil atmosphere interaction

KW - evapo transpiration

UR - http://www.unsat2018.org/

M3 - Paper

ER -

Dainese R, Belli A, Fourcaud T, Tarantino A. An infiltration column to investigate experimentally the response of the soil-plant-atmosphere continuum. 2018. Paper presented at 7th International Conference on Unsaturated Soils, Hong Kong, China.