Water flux estimates from a Belgian Scots pine stand: a comparison of different approaches

Meiresonne, Linda; Sampson, David A.; Kowalski, Andrew S.; Janssens, Ivan A.; Nadezhdina, Nadezhda; Čermák, Jan; Slycken, Jos Van; Ceulemans, R.

doi:10.1016/s0022-1694(02)00284-6

Cited by 62 publications

(50 citation statements)

References 64 publications

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“…Fruit trees have maximum K c values between 0.95 and 1.2 and minimum K c values between 0.40 and 0.80 as reported by Allen et al (1998). Meiresonne et al (2003) gave minimum and maximum K c values for Scots pine between 0.70, whereas this study yielded values between 0.71 and 0.97. However, Hupet and Vanclooster (2004) commented the ET c (K c .ET 0 ) derived by Meiresonne et al (2003) and explained why ET c was overestimated.…”

Section: Crop Factorcontrasting

confidence: 64%

“…Meiresonne et al (2003) gave minimum and maximum K c values for Scots pine between 0.70, whereas this study yielded values between 0.71 and 0.97. However, Hupet and Vanclooster (2004) commented the ET c (K c .ET 0 ) derived by Meiresonne et al (2003) and explained why ET c was overestimated. Schaap et al (1997) cited crop factors of 0.75 before bud break to 1.0 after shoot extension implemented for a Douglas fir forest in the centre of the Netherlands.…”

Section: Crop Factorcontrasting

confidence: 64%

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Comparative analysis of the actual evapotranspiration of Flemish forest and cropland, using the soil water balance model WAVE

Verstraeten

Muys

Feyen

et al. 2005

Hydrol. Earth Syst. Sci.

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Abstract. This paper focuses on the quantification of the green -vegetation related -water flux of forest stands in the temperate lowland of Flanders. The underlying reason of the research was to develop a methodology for assessing the impact of forests on the hydrologic cycle in comparison to agriculture. The tested approach for calculating the water use by forests was based on the application of the soil water balance model WAVE. The study involved the collection of data from 14 forest stands, the calibration and validation of the WAVE model, and the comparison of the water use (WU) components -transpiration, soil and interception evaporation -between forest and cropland.For model calibration purposes simulated and measured time series of soil water content at different soil depths, period March 2000-August 2001, were compared. A multiplesite validation was conducted as well. Actual tree transpiration calculated with sap flow measurements in three forest stands gave similar results for two of the three stands of pine (Pinus sylvestris L.), but WAVE overestimated the actual measured transpiration for a stand of poplar (Populus sp.).A useful approach to compare the WU components of forest versus cropland is scenario analysis based on the validated WAVE model. The statistical Profile Analysis method was implemented to explore and analyse the simulated WU time series. With an average annual rainfall of 819 mm, the results reveal that forests in Flanders consume more water than agricultural crops. A 30 years average of 491 mm for Correspondence to: W. W. Verstraeten (willem.verstraeten@vito.be) 10 forests stands versus 398 mm for 10 cropped agricultural fields was derived. The WU components, on yearly basis, also differ between the two land use types (transpiration: 315 mm for forest and 261 mm for agricultural land use; soil evaporation: 47 mm and 131 mm, for forest and cropland, respectively). Forest canopy interception evaporation was estimated at 126 mm, while it was negligible for cropland.

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Section: Crop Factorcontrasting

confidence: 64%

Section: Crop Factorcontrasting

confidence: 64%

Comparative analysis of the actual evapotranspiration of Flemish forest and cropland, using the soil water balance model WAVE

Verstraeten

Muys

Feyen

et al. 2005

Hydrol. Earth Syst. Sci.

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“…At this site, the discrepancy between measured throughout the whole soil profile and the upper soil profile there was due to the lower soil layers (60 -140 cm) contributing a larger amount of water to daily water depletion relative to the upper layers (10 -60 cm) when was low (Meiresonne et al 2003, Warren et al 2005. These results suggest that great care should be taken when one is comparing T and ET EC to soil water dynamics measured from the upper soil profile even after correcting for root profile distribution (Miller et al 2007).…”

Section: Contributions Of Soil Water Storage To Et: Whole Profile Vermentioning

confidence: 81%

A Comparison of Three Methods to Estimate Evapotranspiration in Two Contrasting Loblolly Pine Plantations: Age-Related Changes in Water Use and Drought Sensitivity of Evapotranspiration Components

Domec¹,

Sun²,

Noormets³

et al. 2012

Forest Science

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Increasing variability of rainfall patterns requires detailed understanding of the pathways of water loss from ecosystems to optimize carbon uptake and management choices. In the current study we characterized the usability of three alternative methods of different rigor for quantifying stand-level evapotranspiration (ET), partitioned ET into tree transpiration (T), understory transpiration, interception, and soil evaporation (E S ) and determined their sensitivity to drought, and evaluated the reliability of soil moisture measurements by taking into account deep soil moisture dynamic. The analyses were conducted in an early-and in a mid-rotation stand of loblolly pine, the predominant species of southern US forest plantations. The three alternative methods for estimating ET were the eddy covariance measurements of water vapor fluxes (ET EC ), the water table fluctuation (ET WT ), and the soil moisture fluctuation (ET SM ). On annual and monthly scales, the three methods agreed to within 10 -20%, whereas on a daily scale, the values of ET SM and ET EC differed by up to 50% and ET SM and ET WT differed by up to 100%. The differences between the methods were attributed to root water extraction below measurement depth and to the sampling at different spatial scales. Regardless of the method used, ET at the early-rotation site was 15-30% lower than that at the mid-rotation site. The dry years did not affect ET at the mid-rotation site but reduced significantly ET at the early-rotation site. Soil moisture trends revealed the importance of measuring water content at several depths throughout the rooting zone because less than 20% of the water is stored in the top 30 cm of soil. Annually, E S represented approximately 9 and 14% of ET EC at the mid-rotation site and the early-rotation site, respectively. At the mid-rotation site, T accounted for approximately 70% of ET EC . Canopy interception was estimated to be 5-10% of annual precipitation and 6 -13% of total ET EC . At the early-rotation site, T accounted for only 35% of ET EC . At this site, transpiration from subdominant trees and shrubs represented 40 -45% of ET EC , indicating that understory was a significant part of the water budget. We concluded that the eddy covariance method is best for estimating ET at the fine temporal scale (i.e., daily), but other soil moisture and water table-based methods were equally reliable and cost-effective for quantifying seasonal ET dynamics. FOR. SCI. 58(5):497-512.Keywords: eddy covariance, loblolly pine, Pinus taeda, sapflow, soil moisture probes, water table L OBLOLLY PINE (PINUS TAEDA L.) REPRESENTS ONE-HALF OF THE STANDING PINE VOLUME in the southern United States (11.7 million ha) and is by far the single most commercially important forest tree species for the region, with more than 1 billion seedlings planted annually (McKeand et al. 2003). More than 1 million ha of intensively managed loblolly pine plantations are found along the lower coastal plain in eastern North Carolina. Large areas of the North Carolina...

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“…Soil water potential was calculated from the volumetric soil water content using the power function model of van Genuchten (1980). Parameters for the soil water retention curve were determined at the site by Meiresonne et al (2003). …”

Section: Supporting Measurementsmentioning

confidence: 99%

Model analysis of the effects of atmospheric drivers on storage water use in Scots pine

et al. 2007

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Abstract. Storage water use is an indirect consequence of the interplay between different meteorological drivers through their effect on water flow and water potential in trees. We studied these microclimatic drivers of storage water use in Scots pine (Pinus sylvestris L.) growing in a temperate climate. The storage water use was modeled using the ANAFORE model, integrating a dynamic water flow andstorage model with a process-based transpiration model. The model was calibrated and validated with sap flow measurements for the growing season of 2000 (26 May-18 October).Because there was no severe soil drought during the study period, we were able to study atmospheric effects. Incoming radiation and vapour pressure deficit (VPD) were the main atmospheric drivers of storage water use. The general trends of sap flow and storage water use are similar, and follow more or less the pattern of incoming radiation. Nevertheless, considerable differences in the day-to-day pattern of sap flow and storage water use were observed. VPD was determined to be one of the main drivers of these differences. During dry atmospheric conditions (high VPD) storage water use was reduced. This reduction was higher than the reduction in measured sap flow. Our results suggest that the trees did not rely more on storage water during periods of atmospheric drought, without severe soil drought. The daily minimum tree water content was lower in periods of high VPD, but the reserves were not completely depleted after the first day of high VPD, due to refilling during the night.Nevertheless, the tree water content deficit was a third important factor influencing storage water use. When storage compartments were depleted beyond a threshold, storage water use was limited due to the low water potential in the storCorrespondence to: H. Verbeek (hans.verbeeck@ua.ac.be) age compartments. The maximum relative contribution of storage water to daily transpiration was also constrained by an increasing tree water content deficit.

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Water flux estimates from a Belgian Scots pine stand: a comparison of different approaches

Cited by 62 publications

References 64 publications

Comparative analysis of the actual evapotranspiration of Flemish forest and cropland, using the soil water balance model WAVE

Comparative analysis of the actual evapotranspiration of Flemish forest and cropland, using the soil water balance model WAVE

A Comparison of Three Methods to Estimate Evapotranspiration in Two Contrasting Loblolly Pine Plantations: Age-Related Changes in Water Use and Drought Sensitivity of Evapotranspiration Components

Model analysis of the effects of atmospheric drivers on storage water use in Scots pine

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