Die chronologische Liste zeigt aktuelle Veröffentlichungen aus dem Forschungsbetrieb der Hochschule Weihenstephan-Triesdorf. Zuständig ist das Zentrum für Forschung und Wissenstransfer (ZFW).
8 Ergebnisse
Dr. Dieter Lohr,
Susanne Grimm,
Walter Übelhör,
Ludwig Nätscher,
Kathlin Schweitzer,
Prof. Dr. Elke Meinken
Qualitätssicherung in der Analytik: Die Ringversuche des AK Gärtnerische Kultursubstate (2019) 131. VDLUFA-Kongress, 10.09.-13.09.2019, Gießen .
Vielfalt in der Kulturlandschaft (2019) Bayrisches Landwirtschaftliches Wochenblatt (36).
Dr. rer. nat. Joachim Bernd Heppelmann,
Prof. Dr. Eric R. Labelle,
Prof. Dr. Stefan Wittkopf,
Prof. Dr. Ute Seeling
Berechtigungen: Open Access
Berechtigungen: Peer Reviewed
In-stand debarking with the use of modified harvesting heads: a potential solution for key challenges in European forestry (2019) European Journal of Forest Research 138 , S. 1067-1081.
DOI: 10.1007/s10342-019-01225-y
Modern forestry is increasingly confronted with challenges that appear with intensive forest management and the progression of the effects of climate change. The forestry sector is able to react to the changing conditions by adapting management plans, forest structure or planting tree species with a higher stress resistance. However, during stand management activities, silvicultural treatments and harvesting operations can have an impact on the further development of the remaining forest ecosystem. In Germany, the most widely used harvesting system for thinning operations is a single-grip harvester used for felling and processing trees followed by a forwarder for timber extraction from the machine operating trails to roadside. In this research project, debarking rollers and other modifications designed for Eucalyptus harvesting heads were tested on conventional harvesting heads for the first time to assess the possibility of adding debarking to mechanized forest operations under Central European conditions. Seven field tests with varying tree species, diameters and age classes, were established within German state forests in Lower Saxony and in Bavaria. These tests were repeated in both summer and winter seasons to evaluate the influence of associated tree sap flows on debarking quality. Three different harvesting heads were modified to assess the altered mechanical characteristics and setups. To assess debarking ability originating from head modifications, a photo-optical measurement system developed within the scope of the project was used. The results demonstrate that especially for summertime operations, simple modifications to currently used harvesting heads are able to provide an average debarking efficiency up to 90% depending on the modifications. Another key finding is that a negatively affected sap flow, experienced during wintertime operations, resulted in 46% lower debarking efficiency, while spruce bark beetle infestations only resulted in a wider spread of the variation. Additionally, the vertical position of the log within the tree proved to have an influence on debarking efficiency, resulting in 15% lower average debarking for butt logs and 9% for top logs as compared to middle logs. Since a debarking process requires the stem to be fed through the harvesting head on multiple occasions to remove bark, average harvesting productivity might be reduced by approx. 10% compared to productivity measured with conventional harvesting heads. Considering the results and the extent of the modifications, the system proved to be a potential addition to existing harvesting methods facing changing challenges in future forestry.
Alexander Land,
Sabine Remmele,
Jutta Hofmann,
Daniel Reichle,
Margaret Eppli,
Prof. Dr. Christian Zang,
Allan Buras,
Sebastian Hein,
Reiner Zimmermann
Berechtigungen: Open Access
Berechtigungen: Peer Reviewed
Two millennia of Main region (southern Germany) hydroclimate variability (2019) Climate of the Past 15 (5), S. 1677-1690.
DOI: 10.5194/cp-15-1677-2019
Christopher König,
Prof. Dr. Christoph Moning,
Felix Weiß
Juwelen des Süderberglandes: Stilleking und Ebbemoore in Nordrhein-Westfalen (2019) Der Falke 2019 (9), S. 42-46.
. Medienbeitrag
Die Höhengrenzen von Baumarten - Bergwald-Projekt im Zuge des Klimawandels (2019) Radio-Sendung des Bayerischen Rundfunks vom 31.08.2019 / Textbeitrag im Internet .
Frank Bäumer
Landwirtschaft 4.0 Konzepte in Zeiten des Klimawandels (2019) Sendebeitrag: Bayerischer Rundfunk, Sendung Abendschau, 30.08.2020 2019 .
Indoor-Farming unter LED-Beleuchtung, Microgreens vom Fensterbrett, Kräuter und Gemüse aus computergesteuerten Kleinstgärten - ist das auch die Lösung für mehr Regionalität und weniger Energie- und Düngerverbrauch? Wie sieht die Landwirtschaft 4.0 aus?
Betreuung der Publikationsseiten
Gerhard Radlmayr
Referent für Wissenstransfer und Forschungskommunikation
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