{"id":{"repo_id":"freiburg-diss","oai_identifier":"oai:freidok.uni-freiburg.de:1352"},"canonical_url":"https://search.dev.ndltd.org/etd/freiburg-diss/oai:freidok.uni-freiburg.de:1352","repository":{"repo_id":"freiburg-diss","name":"University of Freiburg","base_url":"https://freidok.uni-freiburg.de/oai/oai2.php"},"display":{"title":"Growth of advanced European beech trees in the transformation phase in the southern Black Forest","abstract":"The main aim of the research in this study is to explore crown release and its effects on the growth of European beech as a tool to aid the transformation of stands in the southern Black Forest. The research hypothesis, which spawned from this, covered the three main tree growth attributes; basal area, height and crown width, and their importance to gap closure simulation.
Although some of the specifics of the analyses are lost when generalizations are made, taken all together, the results suggest the following broad conclusions: the basal area increment of advanced aged European beech can be increased by up to 100% by heavy crown release; the height increment of advanced aged European beech is little affected by crown release and on average, branches growing in gaps have an annual lateral expansion rate 3 cm greater than branches not grown in gaps.","abstract_html":"The main aim of the research in this study is to explore crown release and its effects on the growth of European beech as a tool to aid the transformation of stands in the southern Black Forest. The research hypothesis, which spawned from this, covered the three main tree growth attributes; basal area, height and crown width, and their importance to gap closure simulation. <br> <br>Although some of the specifics of the analyses are lost when generalizations are made, taken all together, the results suggest the following broad conclusions: the basal area increment of advanced aged European beech can be increased by up to 100% by heavy crown release; the height increment of advanced aged European beech is little affected by crown release and on average, branches growing in gaps have an annual lateral expansion rate 3 cm greater than branches not grown in gaps.","abstract_has_math":false,"creators":["Haywood, Andrew"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Spiecker, Heinrich"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"","date_published":null,"updated_at":"2026-07-24T02:22:10Z","subjects":["Kronenfreistellung","European beech","transformation","crown release"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://freidok.uni-freiburg.de/data/1352","outbound_label":"Repository record","outbound_source":"source_url"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Spiecker, Heinrich"]},{"key":"dc:creator","label":"Author","values":["Haywood, Andrew"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:type","label":"Dc Type","values":["DoctoralThesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Kronenfreistellung","European beech","transformation","crown release"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The main aim of the research in this study is to explore crown release and its effects on the growth of European beech as a tool to aid the transformation of stands in the southern Black Forest. The research hypothesis, which spawned from this, covered the three main tree growth attributes; basal area, height and crown width, and their importance to gap closure simulation.
Although some of the specifics of the analyses are lost when generalizations are made, taken all together, the results suggest the following broad conclusions: the basal area increment of advanced aged European beech can be increased by up to 100% by heavy crown release; the height increment of advanced aged European beech is little affected by crown release and on average, branches growing in gaps have an annual lateral expansion rate 3 cm greater than branches not grown in gaps.","Das Ziel dieser Untersuchung war die Analyse desr Wachstumsreaktionen von freigestellten Buchen als Entscheidungshilfe zum Umbau von Waldbeständen im Südschwarzwald. Die daraus abgeleiteten Untersuchungsansätze beziehen sich auf die drei zentralen Wachstumsgrößen Grundfläche, Baumhöhe und Kronenbreite und auf deren Bedeutung für Simulationen zum Zusammenwachsen von Bestandeslücken.
Obgleich mit allgemeinen Aussagen einige spezifische Ergebnisse der vorliegenden Arbeit unberücksichtigt bleiben, können dennoch folgende Leitlinien mit weitgehender Gültigkeit formuliert werden:
• Das Grundflächenwachstum älterer Buchen lässt sich mit starken Freistellungen auf bis zu 100 % des Ausgangwertes steigern;
• das Höhenwachstum älterer Buchen ist nur in geringem Maße beeinflusst durch Freistellungen;
• im Mittel weisen Äste, die in Bestandeslücken hineinwachsen um 3 cm größere Längenzuwächse auf als Äste, die nicht in Bestandeslücken hinein wachsen;
• bei 4 m großen Buchen stellen Bestandeslücken von 10 m Breite für ein Emporwachsen in die Kronenschicht einen Minimalwert dar."]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Growth of advanced European beech trees in the transformation phase in the southern Black Forest","Wachstum und Entwicklung von älteren Buchen in der Überführungsphase im Südschwarzwald"]}]}],"canonical_facts":{"dc:contributor":["Spiecker, Heinrich"],"dc:creator":["Haywood, Andrew"],"dc:description.abstract":["The main aim of the research in this study is to explore crown release and its effects on the growth of European beech as a tool to aid the transformation of stands in the southern Black Forest. The research hypothesis, which spawned from this, covered the three main tree growth attributes; basal area, height and crown width, and their importance to gap closure simulation.
Although some of the specifics of the analyses are lost when generalizations are made, taken all together, the results suggest the following broad conclusions: the basal area increment of advanced aged European beech can be increased by up to 100% by heavy crown release; the height increment of advanced aged European beech is little affected by crown release and on average, branches growing in gaps have an annual lateral expansion rate 3 cm greater than branches not grown in gaps.","Das Ziel dieser Untersuchung war die Analyse desr Wachstumsreaktionen von freigestellten Buchen als Entscheidungshilfe zum Umbau von Waldbeständen im Südschwarzwald. Die daraus abgeleiteten Untersuchungsansätze beziehen sich auf die drei zentralen Wachstumsgrößen Grundfläche, Baumhöhe und Kronenbreite und auf deren Bedeutung für Simulationen zum Zusammenwachsen von Bestandeslücken.
Obgleich mit allgemeinen Aussagen einige spezifische Ergebnisse der vorliegenden Arbeit unberücksichtigt bleiben, können dennoch folgende Leitlinien mit weitgehender Gültigkeit formuliert werden:
• Das Grundflächenwachstum älterer Buchen lässt sich mit starken Freistellungen auf bis zu 100 % des Ausgangwertes steigern;
• das Höhenwachstum älterer Buchen ist nur in geringem Maße beeinflusst durch Freistellungen;
• im Mittel weisen Äste, die in Bestandeslücken hineinwachsen um 3 cm größere Längenzuwächse auf als Äste, die nicht in Bestandeslücken hinein wachsen;
• bei 4 m großen Buchen stellen Bestandeslücken von 10 m Breite für ein Emporwachsen in die Kronenschicht einen Minimalwert dar."],"dc:format.medium":["application/pdf"],"dc:subject":["Kronenfreistellung","European beech","transformation","crown release"],"dc:title":["Growth of advanced European beech trees in the transformation phase in the southern Black Forest","Wachstum und Entwicklung von älteren Buchen in der Überführungsphase im Südschwarzwald"],"dc:type":["DoctoralThesis"]},"updated_at":"2026-07-24T02:22:10Z"}