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You searched for: Author "Herbst, M." Remove constraint Author: "Herbst, M."
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1. An empirical study of wound response dynamics on sap flow measured with thermal dissipation probes

Author:
Herbst, M.,   et al.   ; Wiedemann, A.; Jiménez, S.M.; Rebman, C.; Cuntz, M.;     Show all 5 Authors
Source:
Acta horticulturae 2013 no.991 pp. 107-113
ISSN:
0567-7572
Subject:
Fagus sylvatica; Quercus petraea; aluminum; autumn; heat; sap flow; thermal properties; tissue repair; trees; wood; xylem
Abstract:
... The thermal dissipation technique (TD) has become one of the most popular methods for sap flow measurements. As other methods, the TD technique implies a damage of the wood tissue, consequently changing wood thermal properties due to healing reactions. Several studies report an underestimation of sap flow due to the wound effects and specific corrections have been developed for the individual meth ...

2. Simulating decomposition of ¹⁴C‐labelled fresh organic matter in bulk soil and soil particle fractions at various temperatures and moisture contents

Author:
Herbst, M.,   et al.   ; Séquaris, J.‐M.; Weihermüller, L.; Bauer, J.; Vereecken, H.;     Show all 5 Authors
Source:
European journal of soil science 2010 v.61 no.6 pp. 940-949
ISSN:
1351-0754
Subject:
mineralization; dispersions; soil water content; soil organic matter; models; particle size; soil structure; carbon; reaction mechanisms; topsoil; water content; water temperature
Abstract:
... ¹⁴C‐labelled fresh organic matter (FOM) was homogeneously incorporated into an agricultural topsoil of small total organic carbon (TOC) content in order to perform decomposition batch experiments at temperatures (T) ranging from 5 to 45°C and soil gravimetric water contents (w) ranging from 7 to 35%. After 4-6‐month incubation (tend), the residual ¹⁴C (Dend) was measured in bulk soil (0-2000 µm) a ...
DOI:
10.1111/j.1365-2389.2010.01299.x

3. Comparative measurements of transpiration and canopy conductance in two mixed deciduous woodlands differing in structure and species composition

Author:
Herbst, M.,   et al.   ; Rosier, P.T.W.; Morecroft, M.D.; Gowing, D.J.;     Show all 4 Authors
Source:
Tree physiology 2008 v.28 no.6 pp. 959-970
ISSN:
0829-318X
Subject:
deciduous forests; canopy; soil-plant-atmosphere interactions; stomatal conductance; soil water content; equations; microclimate; leaf area index; leaf area; sap flow; forest stands; weather; seasonal variation; stand composition; woodlands; stand structure; England
Abstract:
... Transpiration of two heterogeneous broad-leaved woodlands in southern England was monitored by the sap flux technique throughout the 2006 growing season. Grimsbury Wood, which had a leaf area index (LAI) of 3.9, was dominated by oak (Quercus robur L.) and birch (Betula pubescens L.) and had a continuous hazel (Corylus avellana L.) understory. Wytham Woods, which had an LAI of 3.6, was dominated by ...
DOI:
10.1093/treephys/28.6.959
PubMed:
18381276

4. Upward Transport in a Three-Dimensional Heterogeneous Laboratory Soil under Evaporation Conditions

Author:
Herbst, M.,   et al.   ; Bechtold, M.; Vanderborght, J.; Weihermüller, L.; Günther, T.; Ippisch, O.; Kasteel, R.; Vereecken, H.;     Show all 8 Authors
Source:
Vadose zone journal 2012 v.11 no.2 pp. 1976-1982
ISSN:
1539-1663
Subject:
arid zones; electrical resistance; equations; evaporation rate; groundwater; heat transfer; mathematical models; soil; soil pollution; soil salinization; solutes; tomography; vadose zone; water flow; water table
Abstract:
... Upward water flow induced by evaporation can cause soil salinization and transport of contaminants to the soil surface and influences the migration of solutes to the groundwater. In this study, we used electrical resistivity tomography (ERT) to obtain time-lapse images of an upward-flow tracer experiment under evaporation conditions in a three-dimensional, spatially correlated heterogeneous labora ...
DOI:
10.2136/vzj2011.0066

5. Numerical experiments on the sensitivity of runoff generation to the spatial variation of soil hydraulic properties

Author:
Herbst, M.,   et al.   ; Diekkruger, B.; Vanderborght, J.;     Show all 3 Authors
Source:
Journal of hydrology 2006 v.326 no.1-4 pp. 43-58
ISSN:
0022-1694
Subject:
watersheds; watershed hydrology; runoff; spatial variation; soil hydraulic properties; hydrologic models; mathematical models; macropore flow; stochastic processes; cartography; soil heterogeneity; Germany
DOI:
10.1016/j.jhydrol.2005.10.036

6. Measuring and modelling the rainfall interception loss by hedgerows in southern England

Author:
Herbst, M.,   et al.   ; Roberts, J.M.; Rosier, P.T.W.; Gowing, D.J.;     Show all 4 Authors
Source:
Agricultural and forest meteorology 2006 v.141 no.2-4 pp. 244-256
ISSN:
0168-1923
Subject:
simulation models; canopy; throughfall; shrubs; fields; stemflow; rain; seasonal variation; measurement; leaves; England
DOI:
10.1016/j.agrformet.2006.10.012

7. Seasonal and interannual variability of canopy transpiration of a hedgerow in southern England

Author:
Herbst, M.,   et al.   ; Roberts, J.M.; Rosier, P.T.W.; Gowing, D.J.;     Show all 4 Authors
Source:
Tree physiology 2007 v.27 no.3 pp. 321-333
ISSN:
0829-318X
Subject:
mathematical models; canopy; stomatal conductance; Crataegus monogyna; equations; Acer campestre; sap flow; evaporation; woody plants; seasonal variation; measurement; leaves; England
Abstract:
... Transpiration from a hawthorn (Crataegus monogyna L.) dominated hedgerow in southern England was measured continuously over two growing seasons by the sap flow technique. Accompanying measurements of structural parameters, microclimate and leaf stomatal and boundary layer conductances were used to establish the driving factors of hedgerow transpiration. Observed transpiration rates, reaching peak ...
DOI:
10.1093/treephys/27.3.321
PubMed:
17241974

8. Edge effects and forest water use: A field study in a mixed deciduous woodland

Author:
Herbst, M.,   et al.   ; Roberts, J.M.; Rosier, P.T.W.; Taylor, M.E.; Gowing, D.J.;     Show all 5 Authors
Source:
Forest ecology and management 2007 v.250 no.3 pp. 176-186
ISSN:
0378-1127
Subject:
water uptake; forest trees; evapotranspiration; spatial variation; probes (equipment); measurement; sap flow; Fraxinus excelsior; Quercus robur; Crataegus monogyna; Acer campestre; edge effects; evaporation; throughfall; water; deciduous forests
DOI:
10.1016/j.foreco.2007.05.013

9. Temperature response of wheat decomposition is more complex than the common approaches of most multi-pool models

Author:
Herbst, M.,   et al.   ; Bauer, J.; Kirschbaum, M.U.F.; Weihermüller, L.; Huisman, J.A.; Vereecken, H.;     Show all 6 Authors
Source:
Soil biology & biochemistry 2008 v.40 no.11 pp. 2780-2786
ISSN:
0038-0717
Subject:
carbon dioxide; simulation models; gas emissions; soil temperature; plant litter; equations; crop residues; wheat; data analysis; Triticum aestivum; heterotrophs; biodegradation; soil respiration; prediction
Abstract:
... The temperature response of heterotrophic soil respiration is crucial for a reliable prediction of carbon dynamics in response to climatic changes. Most multi-pool models describe the temperature dependence of carbon decomposition by a response function which uniformly scales the decomposition constants of all carbon pools. However, it is not clear whether the temperature response does, indeed, co ...
DOI:
10.1016/j.soilbio.2008.07.024

10. Mapping the spatial variation of soil water content at the field scale with different ground penetrating radar techniques

Author:
Herbst, M.,   et al.   ; Weihermuller, L.; Huisman, J.A.; Lambot, S.; Vereecken, H.;     Show all 5 Authors
Source:
Journal of hydrology 2007 v.340 no.3-4 pp. 205-216
ISSN:
0022-1694
Subject:
ground-penetrating radar; soil water content; time domain reflectometry; topsoil; spatial variation; Germany
Abstract:
... Two ground penetrating radar (GPR) techniques were used to estimate the shallow soil water content at the field scale. The first technique is based on the ground wave velocity measured with a bistatic impulse radar connected to 450 MHz ground-coupled antennas. The second technique is based on inverse modeling of an off-ground monostatic TEM horn antenna in the 0.8-1.6 GHz frequency range. Data wer ...
DOI:
10.1016/j.jhydrol.2007.04.013

11. Spatial heterogeneity of ecosystem carbon fluxes in a broadleaved forest in Northern Germany

Author:
Herbst, M.,   et al.   ; Kutsch, W.L.; Liu, C.; Hormann, G.;     Show all 4 Authors
Source:
Global change biology 2005 v.11 no.1 pp. 70-88
ISSN:
1354-1013
Subject:
deciduous forests; primary productivity; Quercus; Alnus; wood; forest litter; leaf area index; dry matter accumulation; carbon; carbon sequestration; forest ecosystems; Fraxinus; Germany
DOI:
10.1111/j.1365-2486.2004.00884.x

12. Stomatal behaviour in a beech canopy: an analysis of Bowen ratio measurements compared with porometer data

Author:
Herbst, M.
Source:
Plant, cell and environment 1995 v.18 no.9 pp. 1010-1018
ISSN:
0140-7791
Subject:
canopy; forests; equations; microclimate; porometers; leaf area index; stomata; Fagus sylvatica; leaf conductance; Germany
Abstract:
... On the basis of measurements of stand transpiration and microclimate, the bulk stomatal or bulk leaf conductance (gL) of a beech forest in northern Germany was calculated for periods in which leaves were fully expanded and the canopy was dry. This conductance depends strongly on light and humidity conditions above the forest. During periods with photosynthetic photon flux densities Q > 1200 microm ...
DOI:
10.1111/j.1365-3040.1995.tb00611.x

13. Intercomparison of flow and transport models applied to vertical drainage in cropped lysimeters

Author:
Herbst, M.,   et al.   ; Fialkiewicz, W.; Chen, T.; Putz, T.; Thiery, D.; Mouvet, C.; Vachaud, G.; Vereecken, H.;     Show all 8 Authors
Source:
Vadose zone journal 2005 v.4 no.2 pp. -
ISSN:
1539-1663
Subject:
methabenzthiazuron; simulation models; agricultural soils; unsaturated conditions; herbicide residues; field crops; leaching; lysimeters; soil water movement; preferential flow; drainage; vadose zone; hydrologic models
Abstract:
... Models predicting flow and transport in the vadose zone differ in their conceptual approach, their complexity, and their mathematical formulation. Four models (MARTHE, TRACE, ANSWERS, and MACRO), which differ significantly in their model concepts and complexity, were applied to a common data set to evaluate and compare the different model approaches. Five free-draining lysimeters, cropped with win ...

14. A set of analytical benchmarks to test numerical models of flow and transport in soils

Author:
Herbst, M.,   et al.   ; Vanderborght, J.; Kasteel, R.; Javaux, M.; Thiery, D.; Vanclooster, M.; Mouvet, C.; Vereecken, H.;     Show all 8 Authors
Source:
Vadose zone journal 2005 v.4 no.1 pp. -
ISSN:
1539-1663
Subject:
vadose zone; soil water movement; unsaturated flow; mathematical models; hydrologic models; equations
Abstract:
... Accurate model predictions of water flow and solute transport in unsaturated soils require a correct representation of relevant mechanisms in a mathematical model, as well as correct solutions of the mathematical equations. Because of the complexity of boundary conditions and the nonlinearity of the processes considered, general solutions of the mathematical equations rely on numerical approximati ...

15. A spatialising tool to simulate pesticide fate in the unsaturated zone on a catchment scale

Author:
Herbst, M.,   et al.   ; Esposito, A.; Vischetti, C.; Errera, G.; Trevisan, M.; Scarponi, L.; Ciocanaru, M.; Vereecken, H.;     Show all 8 Authors
Source:
Agronomy for sustainable development 2005 v.25 no.2 pp. 279-283
ISSN:
1774-0746
Subject:
environmental fate; agricultural soils; textural soil types; simulation models; groundwater contamination; spatial distribution; isoproturon; leaching; watersheds; forest soils; vadose zone; Germany