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Structure, development and growth of selection forests at the Granata research site
Matej Reščič, Andrej Bončina, 2007

Povzetek: The Granata research site was established for the study of structure, growth and regeneration of silver fir-European beech single stem selection forest. Three phytocoenological relevés were carried out, all trees ?5 cm diameter at breast height (d.b.h.) were measured by full callipering, tree growth was analysed for sample trees, regeneration of tree species was registered on 63 sampling plots. In addition, historical data from past forest inventories werestudied. In the period from 1952 to 2003, the share of silver fir has decreased from 86% to 26%, the share of Norway spruce increased significantly,whereas the share of beech and sycamore has slightly increased. The current growing stock amounts to 350 m3 ha-1, with large-size diameter trees (d.b.h. ?50 cm) representing 51% of total growing stock. The site is divided into 16 stand patches with significant differences in tree species composition and diameter distribution. Regeneration is sufficient with silver fir prevailing in total number of seedlings (42%). 23% of all seedlings are damaged as a result of game browsing.
Ključne besede: selection forest, plenterwald, selection system management, stand structure, tree species composition, regeneration, diameter distribution
DiRROS - Objavljeno: 12.07.2017; Ogledov: 1622; Prenosov: 344
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KEYLINK : towards a more integrative soil representation for inclusion in ecosystem scale models : I. : review and model concept
Jorge Curiel Yuste, Juan Jiménez, Oskar Franklin, Paul Henning Krogh, Olga Vindušková, Alexei Uvarov, Mathieu Javaux, Maarja Öpik, Tine Grebenc, Jan Frouz, Alexei Tiunov, Aline Frossard, Beat Frey, Laura Martinez Suz, Harry Vereecken, Ivika Ostonen, E. I. Vanguelova, Matty Berg, Sébastien Barot, Maria J.I. Briones, Daniel P. Rasse, Kris van Looy, Katrin Kuka, Andrea Schnepf, Xavier Domene, Mathias Mayer, Omar Flores, Gabrielle I. Deckmyn, 2020

Povzetek: The relatively poor simulation of the below-ground processes is a severe drawback for many ecosystem models, especially when predicting responses to climate change and management. For a meaningful estimation of ecosystem production and the cycling of water, energy, nutrients and carbon, the integration of soil processes and the exchanges at the surface is crucial. It is increasingly recognized that soil biota play an important role in soil organic carbon and nutrient cycling, shaping soil structure and hydrological properties through their activity, and in water and nutrient uptake by plants through mycorrhizal processes. In this article, we review the main soil biological actors (microbiota, fauna and roots) and their effects on soil functioning. We review to what extent they have been included in soil models and propose which of them could be included in ecosystem models. We show that the model representation of the soil food web, the impact of soil ecosystem engineers on soil structure and the related effects on hydrology and soil organic matter (SOM) stabilization are key issues in improving ecosystem-scale soil representation in models. Finally, we describe a new core model concept (KEYLINK) that integrates insights from SOM models, structural models and food web models to simulate the living soil at an ecosystem scale.
Ključne besede: soil fauna, model, Soil Organic Matter, SOM, hydrology, pore size distribution, PSD, soil biota, ecosystem
DiRROS - Objavljeno: 23.09.2020; Ogledov: 18; Prenosov: 30
.pdf Celotno besedilo (5,28 MB)
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