Variation of stomatal resistance with leaf age in Quercus petraea: effect on the soil-water balance of an oak forest

Nizinski, J.; Morand, Dominique; Saugier, B.

doi:10.1051/forest:19890596

Cited by 9 publications

(4 citation statements)

References 2 publications

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“…In order to reduce root water uptake in spring, the resistance of the trees had to decrease later than the peak in leaf area indicating that the old leaves were less prone to closure at low soil water content. A seasonal decrease in canopy resistance was also observed by Calder (1982) and Nizinski et al (1989).…”

Section: Vegetation Propertiessupporting

confidence: 57%

Groundwater recharge and evapotranspiration for two natural ecosystems covered with oak and heather

Ladekarl

Rasmussen

Christensen

et al. 2005

Journal of Hydrology

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Section: Vegetation Propertiessupporting

confidence: 57%

Groundwater recharge and evapotranspiration for two natural ecosystems covered with oak and heather

Ladekarl

Rasmussen

Christensen

et al. 2005

Journal of Hydrology

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“…The finding of maximum leaf conductance (8) several weeks after the cessation of leaf area expansion is in accordance with results of Nizinski et al (1989) obtained from adult trees of the closely related sessile oak. According to these authors, this feature is, at least partly, due to a progressive development of the stomata.…”

Section: Discussionsupporting

confidence: 90%

Effects of different forms of nitrogen supply on the gas exchange of young pedunculate oaks (Quercus robur L.)

Thomas

Gehlen

1997

J Plant Nutrition & Soil

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The effects of different forms and concentrations of N in the rooting medium on the CO2/H2O gas exchange of leaves of the pedunculate oak (Quercus robur L.) were investigated. Two‐year‐old seedlings were grown in nutrient solutions containing low (1.8 mM) or high (4.8 mM) concentrations of NH4+, 3.6 mM NO3−, or both NH4+ and NO3− (1.8 mM + 1.8 mM). In various sets of plants subjected to these N treatments, the following parameters were determined: biomasses of leaves and fine roots, leaf area‐related net photosynthesis at light saturation (A) and leaf conductance (g), foliar concentrations of chlorophylls, N, Ca2+, Mg2+ and K+ and the ash alkalinity of the leaves (as a measure of the carboxylate content). In all treatments, the leaves were equally well supplied with nutrients. Oaks grown in high NH4+ concentrations produced significantly smaller leaf and root biomasses. Compared to oaks cultivated with both N forms or with low NH4+ concentration, oaks grown with high NH4+ supply showed lower values of A and g, but no significant differences in ash alkalinity and leaf area‐related chlorophyll concentrations. Oaks fed with NO3− as the only N form had an intermediate biomass production, but low values of A and g. The time courses of A in the different treatments closely followed the patterns of g. In all N treatments, the same linear relationship was found between A and g, indicating that, within a rather wide range, the variation in the form and amount of supplied N does not affect the instantaneous water use efficiency of young pedunculate oaks.

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“…The ratio E T act over E T c varies from 77.6 to 99.6% for the calibration plots and from 92.8 to 98.9% for the validation plots. For oak forests, Cermàk et al (1982) and Nizinski et al (1989) found a transpiration ratio of 80%. Ladekarl (1998) found a ratio of 90%, corresponding well with the values listed in Table 2.…”

Section: Water Balance In Relation To Forest Stand Characteristicsmentioning

confidence: 96%

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

Verstraeten¹,

Muys²,

Feyen³

et al. 2005

Preprint

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Abstract. This paper focuses on the quantification of the green – vegetation related – water flux of a forest stand 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 approach tested for calculating the water consumption 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 multiple-site 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 show that forests in Flanders consume more water than agricultural crops. A 30 years average of 491 mm for 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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Variation of stomatal resistance with leaf age in Quercus petraea: effect on the soil-water balance of an oak forest

Cited by 9 publications

References 2 publications

Groundwater recharge and evapotranspiration for two natural ecosystems covered with oak and heather

Groundwater recharge and evapotranspiration for two natural ecosystems covered with oak and heather

Effects of different forms of nitrogen supply on the gas exchange of young pedunculate oaks (Quercus robur L.)

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

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