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Berlin Brandenburg

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  • 1
    Description: Between the first and second national forest soil inventory in the northeastern German lowlands a significant soil acidification took place with regionally varying intensity. It manifests itself in a reduced base saturation in the whole rooting zone. This applies to the base cations magnesium and calcium. For potassium, however, no significant changes were detected. The acidification dynamic is the strongest in the southern part of Brandenburg. The specific immission situation in this region during the past four decades explains this. Particularly in southern Brandenburg high dust depositions (fly ashes from brown coal-fired power stations) buffered the acid components and enriched the soil with base cations in the 1970s and 1980s. Since the reduction of these atmospheric depositions, the bases were obviously totally incorporated in the biomass or leached out with seepage water. Currently, the majority of the forest sites in Mecklenburg-Vorpommern and Brandenburg are poor in basic nutrient elements (Ca, Mg, K). Especially the element magnesium is assumed to be lacking. This paper presents an assessment of the long-term availability of the nutrients Ca, Mg und K on the basis of calculated nutrient balances for various forest management scenarios (e.g. full-tree harvest). The results show that the sustainable supply is critical especially...
    Keywords: Forest Soil Inventory ; Forest Soil Condition ; Soil Acidification ; Nutrient Balance ; Full-Tree Harvest ; Magnesium Deficiency ; Base Saturation
    Source: DataCite
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  • 2
    Language: English
    In: European Journal of Forest Research, 2005, Vol.124(4), pp.261-271
    Description: Based on the results of the atmospheric deposition classification of the year 1989, a methodical approach should be introduced, which—based on the modelled total deposition rates—enables us to characterise the input situation of forest monitoring plots and to delimit load areas in Germany. In 1989, the deposition situation in nearly 1,800 forest monitoring sites (BZE/extensive Soil Condition Inventory) in Germany could be explained by four factors (or three, excluding sea salt impact) with the help of a factor analysis. The factor values were grouped into six deposition types with typical compounds and regional patterns. The classified input rates of the soil inventory plots adequately represent the stress situation and deposition changes in Germany. The application of the statistical approach on the level of Brandenburg clarifies the special local input situation. Due to the special combination of deposed elements, the sources of emissions can be characterised as well. When the soil inventory is repeated, a project planned for 2006, this approach can be used in order to determine homogenous areas for stratified data evaluation.
    Keywords: Atmospheric deposition ; Emissions ; Multivariate statistics ; Germany ; Brandenburg ; Forest ; Monitoring
    ISSN: 1612-4669
    E-ISSN: 1612-4677
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  • 3
    Language: German
    Description: Die vorliegende Arbeit beschäftigt sich mit der Regionalisierung von Wasserhaushaltskennwerten für die gesamte Waldfläche Brandenburgs. Grundwasserflurabstände wurden auf Grundlage der Legendeneinheiten der forstlichen Standortskarte und eines digitalen Geländemodells regionalisiert. Der Vergleich mit auf Grundwassermessstellen basierenden Daten zeigte eine gute Übereinstimmung zwischen beiden Verfahren. Zur Regionalisierung von Substrateigenschaften wurden Diskriminanzmodelle zur Disaggregierung multipler Legendeneinheiten sowie Klassifikationsbäume zur Prognose von Legendeneinheiten der forstlichen Standortskarte für bisher nicht kartierte Gebiete erstellt. Die Validierung der erstellten Diskriminanzmodelle und Klassifikationsbäume mit Inventurdaten zeigte mit der forstlichen Standortskarte vergleichbare Klassifikationen. Kohlenstoffvorräte wurden mittels Regressionsanalyse für das gesamte Solum geschätzt. Die vertikale Verteilung der Kohlenstoffvorräte im Boden wurde mittels Clusteranalyse in Form relativer Tiefengradiententypen typisiert. Die Vorhersage der Cluster mit einem optimal beschnittenen Klassifikationsbaum erlaubte die Schätzung der Kohlenstoffvorräte einzelner Schichten. Durch den Vergleich von Pedotransferfunktionen zur Schätzung der nutzbaren Feldkapazität konnte eine für das Arbeitsgebiet geeignete Funktion ermittelt werden. Die Berechnung der Wasserhaushaltskennwerte Wasserverfügbarkeit, Wassermangel und Sickerwasserrate erfolge auf Grundlage des TUB-BGR-Verfahrens. Dabei zeigte sich sowohl eine hohe großräumige, als auch hohe kleinräumige Variabilität. Die für die Ableitung von Anbauempfehlungen besonders wichtigen Kennwerte Wasserverfügbarkeit und Wassermangel variieren um mehrere 100mm. Allein im Bereich der grundwasserfernen Standorte variiert die Wasserverfügbarkeit im Bereich von 300...500mm und das Wasserdefizit zwischen -200...0mm.... ; The present work deals with different problems concerning the regionalization of water budget components and carbon stocks for the whole forest area of Brandenburg. The developed approach for the estimation of continuous groundwater depths, uses forest site mapping data and a digital elevation model. A high degree of compliance between both assessments was shown in the validation based on groundwater depths derived from groundwater monitoring wells. Parent material properties were also regionalized on the basis of forest site mapping data. In a first step, discriminant analysis was carried out for the disaggregation of compounded mapping units, to derive spatially unambiguous assignments. Subsequently, classification trees were grown to predict mapping units for previously unmapped areas. The external validation of discriminant models and classification trees using inventory data showed results that were comparable to sites mapped by classical field survey. The amount of carbon stocks in the whole solum was estimated by regression analysis on the basis of inventory data. The vertical distributions of carbon stocks were transformed to relative depth gradients, which were then grouped through cluster analysis. The subsequently performed prediction of obtained clusters using an optimally pruned class probability tree allowed the estimation of carbon stocks in single soil layers. A validation...
    Keywords: Geowissenschaften ; Landwirtschaft Und Verwandte Bereiche ; Forstliche Standortskartierung ; Nordostdeutsches Tiefland ; Grundwasserflurabstand ; Pedotransferfunktionen ; Digitale Bodenkartierung ; Forest Site Mapping ; North-Eastern Lowlands ; Groundwater Level ; Pedotransfer Functions ; Digital Soil Mapping
    ISBN: 978-3-9816573-1-9
    Source: DataCite
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  • 4
  • 5
    Language: German
    In: Zeitschrift für Pflanzenernährung und Bodenkunde, 1995, Vol.158(5), pp.485-491
    Description: Die vorliegende Auswertung basiert auf mehr als 6000 Bodenhorizontdaten, die den Labordatenbanken der geologischen Dienste mehrerer Bundesländer entstammen. Zur statistischen Bearbeitung wurden Dateien mit einer gezielten Differenzierung nach geologischen Ausgangssubstraten bzw. petrographisch‐genetischen Angaben angelegt. Die Abschätzung des Einflusses von Bodenart, Humusgehalt und Trockenrohdichte auf die Kennwerte Feldkapazität, nutzbare Feldkapazität und Luftkapazität erfolgte regressionsanalytisch für Substrat‐Horizont‐Gruppen. Unter geogenetischen Aspekten konnte ein Vergleich mit den bodenphysikalischen Angaben der Bodenkundlichen Kartieranleitung ( 1982) angestellt werden. Zur Ableitung der Kenngrößen FK, nFK und LK wird exemplarisch für Lößböden ein Schätzrahmen vorgestellt, der die Bodenhorizontierung berücksichtigt. Air capacity, plant available water and field capacity of horizon substrate clusters ‐ a statistical analysis of soil survey laboratory data This statistical evaluation bases on the soil physical description of about 6000 soil horizons coming from the Soil Survey Institutions of the German federal states. Data sets were created considering geogenetical aspects. The influence of soil texture, humus content and bulk density on field capacity (pF 〉 1.8), plant available water (pF 1.8–4.2) and air capacity (pF 〈 1.8) was estimated using multiple regression analyses. These soil hydraulic parameters are compared with those described by (1982). An exemplary estimation of soil hydraulic properties for various loess horizons is presented.
    ISSN: 0044-3263
    E-ISSN: 1522-2624
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  • 6
    Language: English
    In: European Journal of Forest Research, 2005, Vol.124(4), pp.251-260
    Description: In the 1970s unexpected forest damages, called “new type of forest damage” or “forest decline”, were observed in Germany and other European countries. The Federal Republic of Germany and the German Federal States implemented a forest monitoring system in the early 1980s, in order to monitor and assess the forest condition. Due to the growing public awareness of possible adverse effects of air pollution on forests, in 1985 the ICP Forests was launched under the convention on long-range transboundary air pollution (CLRTAP) of the United Nations Economic Commission for Europe (UN-ECE). The German experience in forest monitoring was a base for the implementation of the European monitoring system. In 2001 the interdisciplinary case study “concept and feasibility study for the integrated evaluation of environmental monitoring data in forests”, funded by the German Federal Ministry of Education and Research, concentrated on in-depths evaluations of the German data of forest monitoring. The objectives of the study were: (a) a reliable assessment of the vitality and functioning of forest ecosystems, (b) the identification and quantification of factors influencing forest vitality, and (c) the clarification of cause-effect-relationships leading to leaf/needle loss. For these purposes additional data from external sources were acquired: climate and deposition, for selected level I plots tree growth data, as well as data on groundwater quality. The results show that in particular time series analysis (crown condition, tree growth, and tree ring analysis), in combination with climate and deposition are valuable and informative, as well as integrated evaluation of soil, tree nutrition and crown condition data. Methods to combine information from the extensive and the intensive monitoring, and to transfer process information to the large scale should be elaborated in future.
    Keywords: Environmental monitoring ; Data management ; Forest growth ; Critical loads ; Regionalization ; Integrated evaluation ; Modelling ; Forest vitality ; Crown condition
    ISSN: 1612-4669
    E-ISSN: 1612-4677
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  • 7
    Language: German
    In: Zeitschrift für Pflanzenernährung und Bodenkunde, 1995, Vol.158(1), pp.15-22
    Description: Die Abhängigkeit des Dickenwachstums (Jahrringbreiten) von der Wasserversorgung wurde an einem Altkiefernbestand auf Sand für grundwassernahe und ‐ferne Bedingungen untersucht. Zur Charakterisierung des Wassermangelstresses eignet sich der Quotient Ereal/Epot besonders gut. Die für lange Zeiträume berechneten Quotienten wurden mit Hilfe von multiplen Regressionsanalysen zum Baumzuwachs in Beziehung gesetzt. Es konnte ein bestandestypischer Zusammenhang zwischen dem mittleren Grundflächenzuwachs und dem aktuellen und Vorjahreswasserhaushalt abgeleitet werden. Die Folgen von Grundwasserabsenkungen auf das durchschnittliche Dickenwachstum werden in Abhängigkeit vom Substrat anhand von Modellstudien vorgestellt. Water budget and annual ring growth of pines for different groundwater depth conditions Relation between annual ring width and water supply was examined for different groundwater depth in an old pine stand on a sandy soil. The quotient Ereal/Epot is a suitable parameter to quantify water stress. Multiple regression analyses were used to describe the dependence between annual ring width and water stress. Mean growth of basal area can be expressed by Ereal/Epot of the actual and previous year. This site specific function was used to quantify growth reduction affected by ground‐water lowering for various soil conditions.
    ISSN: 0044-3263
    E-ISSN: 1522-2624
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  • 8
    In: European Journal of Biochemistry, 15 July 2001, Vol.268(14), pp.4011-4018
    Description: We report the purification of the maltose/trehalose transporter complex MalFGK of the hyperthermophilic archaeon . The complex was expressed in , solubilized in dodecyl maltoside and purified with the aid of a histidine tag on one of the membrane proteins. One hundred grams of cells yielded 3 mg of pure complex. The final product showed ATPase activity at 70 °C and was soluble at low detergent concentration. ATPase activity was not due to dissociation of the MalK subunit from the integral membrane proteins MalF and MalG but could not be further stimulated by trehalose/maltose binding protein (TMBP), be it the native protein as isolated from or the soluble engineered protein. The purified native TMBP was identified as a glycoprotein.
    Keywords: Abc Transporter ; Atpase ; Binding Protein ; Lipid Anchor ; Glycoprotein
    ISSN: 0014-2956
    E-ISSN: 1432-1033
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  • 9
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