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  • 1
    Language: German
    In: Natur und Recht, 2010, Vol.32(6), pp.404-404
    Description: Byline: Wolfgang Durner (1) Author Affiliation: (1) Universitat Bonn, Bonn, Deutschland Article History: Registration Date: 01/06/2010 Online Date: 09/06/2010
    Keywords: Law ; Administrative Law ; Environmental Law/Policy/Ecojustice ; Environmental Sciences ; Law;
    ISSN: 0172-1631
    E-ISSN: 1439-0515
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  • 2
    Language: German
    In: Natur und Recht, 2012, Vol.34(6), pp.369-377
    Description: Das im Rahmen des Energiewendepakets erlassene NABEG 2011 soll den Ausbau der Höchstspannungsnetze in Deutschland auf eine neue Grundlage stellen und erheblich beschleunigen. Mittlerweile findet indes im Schrifttum eine kontroverse Diskussion statt, die neben Fragen der Praktikabilität vor allem die Verfassungsmäßigkeit des Gesetzes thematisiert. Im Zentrum stehen dabei die Zuordnung des NABEG zu den Gesetzgebungskompetenzen des Art. 74 GG und die Frage einer Verwaltungskompetenz des Bundes für den Vollzug des Gesetzes.
    ISSN: 0172-1631
    E-ISSN: 1439-0515
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  • 3
    Language: English
    In: Journal of Hydrology, 2015, Vol.527, p.531(12)
    Description: To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.jhydrol.2015.05.020 Byline: Andre Peters, Sascha C. Iden, Wolfgang Durner Abstract: * We re-investigate the evaporation method to get soil hydraulic properties. * Water flow in capillaries, pore corners and films, and vapor phase is considered. * The method yields accurate estimates of soil hydraulic properties. Article History: Received 25 October 2014; Revised 2 May 2015; Accepted 12 May 2015 Article Note: (miscellaneous) This manuscript was handled by Corrado Corradini, Editor-in-Chief, with the assistance of Nunzio Romano, Associate Editor
    Keywords: Hydraulic Flow – Methods
    ISSN: 0022-1694
    Source: Cengage Learning, Inc.
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  • 4
    Language: German
    In: Natur und Recht, 2010, Vol.32(7), pp.452-464
    Description: Zehn Jahre nach der Verabschiedung der Wasserrahmenrichtlinie hat europaweit die eigentliche Richtlinien- und Planumsetzung begonnen. Nicht nur aus dem Inland liegen dabei Einschätzungen vor, die den bürokratischen Aufwand des durch die Richtlinie in Gang gesetzten Planungsprozesses kritisieren und das verfahrenszentrierte Regelungskonzept in Frage stellen. Für Deutschland ergibt die Bilanz, dass der Planungsprozess trotz eines hohen Vollzugsaufwandes zumindest zu sinnhaften Ergebnissen führt und die perspektivische Erweiterung der Richtlinie um Aspekte der Gewässermorphologie als Gewinn zu verbuchen ist. Die kommenden Jahre dürften durch offene Rechts- und Finanzierungsfragen, eine Diskussion um einen flächenhaften Gewässerschutz sowie durch Versuche der Kommission geprägt sein, im Rahmen des sog. CIS-Prozesses stärkeren Einfluss auf den Richtlinienvollzug zu gewinnen.
    Keywords: Law ; Environmental Law/Policy/Ecojustice ; Administrative Law ; Environmental Sciences ; Law;
    ISSN: 0172-1631
    E-ISSN: 1439-0515
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  • 5
    Language: English
    In: Natur und Recht, Dec, 2010, Vol.32(12), p.900(1)
    Description: Byline: Wolfgang Durner (1) Author Affiliation: (1) Universitat Bonn, Bonn, Deutschland Article History: Registration Date: 01/12/2010 Online Date: 08/12/2010
    ISSN: 0172-1631
    Source: Cengage Learning, Inc.
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  • 6
    Language: German
    In: Natur und Recht, 2012, Vol.34(5), pp.325-328
    Description: Am ersten Dezember 2011 erließ das OVG Münster sein langerwartetes Urteil zu der Klage des Bundes für Umwelt und Naturschutz e.V. gegen das Trianel-Kohlekraftwerk Lünen nach dem Umwelt-Rechtsbehelfsgesetz. Schon vor dem abschließenden Urteil hatte dieser Verwaltungsprozess indes ein Stück Umweltrechtsgeschichte geschrieben: Auf die entsprechende Vorlagefrage des 8. Senats stellte nämlich der EuGH in seinem am 12. Mai 2011 verkündeten wegweisenden Trianel-Urteil1 fest, dass das deutsche Umwelt-Rechtsbehelfsgesetz mit Blick auf die Verbandsklagerechte nicht den europarechtlichen Anforderungen genügt, dass sich die Verbandsklagerechte vielmehr auf das umweltbezogene Unionsrecht und korrespondierende Umsetzungsvorschriften erstrecken müssen und die Richtlinie 2003/35/EG2 insoweit ggf. direkt anwendbar ist. Für die verwaltungsgerichtliche Kontrolle des Vollzugs des deutschen Umweltrechts bildet diese Aussage eine grundlegende Weichenstellung, aus der bis zu der zeitnah zu erwartenden Reparatur durch den Bundesgesetzgeber zunächst die Gerichte die Konsequenzen ziehen müssen. In diesem Kontext steht auch das hier zu würdigende Urteil des OVG Münster.
    Keywords: Law ; Administrative Law ; Environmental Law/Policy/Ecojustice ; Environmental Sciences ; Law;
    ISSN: 0172-1631
    E-ISSN: 1439-0515
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  • 7
    Article
    Article
    Language: German
    In: Natur und Recht, 2012, Vol.34(10), pp.697-697
    Keywords: Environmental Sciences ; Law;
    ISSN: 0172-1631
    E-ISSN: 1439-0515
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  • 8
    Language: German
    In: Raumforschung und Raumordnung, 2014, Vol.72(2), pp.165-167
    Keywords: Geography ; Landscape/Regional and Urban Planning ; Environmental Law/Policy/Ecojustice ; Sociology & Social History ; Geography ; Economics;
    ISSN: 0034-0111
    E-ISSN: 1869-4179
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  • 9
    Language: English
    In: Journal of Hydrology, August 2018, Vol.563, pp.251-259
    Description: HYPROP (Hydraulic Property Analyzer) system works based on the simplified evaporation method, which determines soil hydraulic properties in the laboratory. This system simultaneously monitors the changes in weight of soil samples as well as the soil matric potential at two depths throughout a drying process governed by evaporation from the soil surface. In this study, we examined the performance of the pseudo continuous pedotranfer function (PC-PTF) to estimate the soil water retention curve (SWRC) using high resolution data measured by HYPROP system. The dataset consisted of 7963 measured water retention data points obtained from 81 Turkish soil samples from which 60%, 20% and 20% were randomly selected for training, cross-validation and test subsets, respectively. The best PC-PTF developed in this study with a mean absolute error of 0.023 m m (a root mean square error of 0.033 m m ) and a correlation coefficient of 0.96 showed promising performance considering the typical performance range (RMSE = 0.034–0.085 m m ) for parametric PTFs estimating SWRC. The best PC-PTF used soil textural information, soil bulk density, the percentage of stable aggregates, soil organic matter content and the initial water content as the input attributes. PTFs developed in this study also ranked high among previously developed PC-PTFs (with RMSE ranging from 0.027 to 0.056 m m ) using sparse datasets collected via the traditional equilibrium approach (i.e. sandbox apparatus /pressure plates extractor). We, therefore, recommend further application of the PC-PTF approach for development of PTFs using high resolution data obtained by HYPROP system.
    Keywords: Data Mining ; Evaporation Method ; Neural Network ; Pseudo Continuous Pedotranfer Function ; Soil Water Retention Curve ; Geography
    ISSN: 0022-1694
    E-ISSN: 1879-2707
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  • 10
    Language: English
    In: Journal of Hydrology, August 2015, Vol.527, pp.531-542
    Description: The simplified evaporation method (SEM) is a technique to determine soil hydraulic properties, i.e. the water retention curve and the hydraulic conductivity curve, from evaporation experiments in the laboratory. The method relies on simplifying assumptions like spatial linearity in pressure head and water fluxes, which are violated in the evaporation process. Therefore, its validity and accuracy has been checked in the past by numerical simulation using the Richards equation and subsequent evaluation of the computer-generated data. These numerical tests were conducted using models of the soil hydraulic properties like the van Genuchten–Mualem model, which account only for water retention and conductivity in completely filled capillaries and thus give biased descriptions of the hydraulic properties at low moisture contents. We reinvestigate the accuracy of the SEM by a numerical simulation study for a broad spectrum of soils with textures ranging from clay to pure sand, using more realistic functions of the soil hydraulic properties, which account for water adsorption, flow in incompletely filled capillaries and isothermal vapor flow. Our results show that the previous numerical studies underestimated the non-linearities of suction and water content profiles which occur during bare-soil evaporation, in particular for sandy soils. Nevertheless, the SEM approximates the true hydraulic functions of most soils very well, with mean deviations below 0.1% volumetric water content and below 0.1 for of hydraulic conductivity. Larger columns or higher evaporation rates increase this error only slightly. Only for the extremes in the texture spectrum, we found bias in the estimated soil hydraulic properties. We furthermore investigate different strategies for calculating a mean suction and show that a weighted combination of the arithmetic and geometric mean leads to the best results.
    Keywords: Evaporation Method ; Retention Function ; Hydraulic Conductivity Function ; Capillary Flow ; Film Flow ; Vapor Flow ; Geography
    ISSN: 0022-1694
    E-ISSN: 1879-2707
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