Skiktning och strukturell utveckling i unga naturlika skogsplanteringar
Multilayered woodland types are an important part of the urban forest. The knowledge how to establish and maintain such plantations are not as deep as other knowledge fields concerning forestry. Therefore this study has looked upon how to achieve multilayered structures in young nature-like woodland...
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| Format: | Otro |
| Language: | Swedish Swedish |
| Published: |
2009
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| Online Access: | https://stud.epsilon.slu.se/12699/ |
| _version_ | 1855572114859360256 |
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| author | Wiström, Björn |
| author_browse | Wiström, Björn |
| author_facet | Wiström, Björn |
| author_sort | Wiström, Björn |
| collection | Epsilon Archive for Student Projects |
| description | Multilayered woodland types are an important part of the urban forest. The knowledge how to establish and maintain such plantations are not as deep as other knowledge fields concerning forestry. Therefore this study has looked upon how to achieve multilayered structures in young nature-like woodland plantations. As a theoretical base for the study three different major knowledge culture have been studied that concerns the subject, ecology, forestry and landscape management/design. This three theoretical framework concludes that many natural processes strive in the opposite direction of multilayered structures in their youth. At the same time this different theories give us a understanding who and why we could manipulate this stand through planting composition and management towards more stratified structures. To deepen the practical experiences and knowledge about these questions, a field study project was designed. All together twelve different stands that had been planted mainly during the 1980-s where chosen and studied in the Öresund region focusing on their vegetation structure and canopy stratification. Crown height and tree height together with crown projections
where the main parameters used to evaluate the structure of the stands. The data was analyzed using a wide range of scientifically approaches including, the quantity stratification models LMS and TSTRAT. The results show that a three layered structure can be achieved within thirty years after plantation. The key element for achieving a multilayered structure where found to be a combination of both species mixture and management. A species mixture with oak and not to many other tree species together with some middle layer species and the low growing shade tolerant bush species like Alpine Currant Ribes alpinum proved to be one good alternative. Depending on the species mixture and the management goal, two different management tactics could be used for the thinning of the stand. One where the tree layer was favoured and one where the middle layer was favoured giving rise to different kind of multilayered
forest structures. |
| format | Otro |
| id | RepoSLU12699 |
| institution | Swedish University of Agricultural Sciences |
| language | Swedish swe |
| publishDate | 2009 |
| publishDateSort | 2009 |
| record_format | eprints |
| spelling | RepoSLU126992017-10-20T10:59:46Z https://stud.epsilon.slu.se/12699/ Skiktning och strukturell utveckling i unga naturlika skogsplanteringar Wiström, Björn Landscape Management, Design, and Construction (until 121231) Landscape architecture Multilayered woodland types are an important part of the urban forest. The knowledge how to establish and maintain such plantations are not as deep as other knowledge fields concerning forestry. Therefore this study has looked upon how to achieve multilayered structures in young nature-like woodland plantations. As a theoretical base for the study three different major knowledge culture have been studied that concerns the subject, ecology, forestry and landscape management/design. This three theoretical framework concludes that many natural processes strive in the opposite direction of multilayered structures in their youth. At the same time this different theories give us a understanding who and why we could manipulate this stand through planting composition and management towards more stratified structures. To deepen the practical experiences and knowledge about these questions, a field study project was designed. All together twelve different stands that had been planted mainly during the 1980-s where chosen and studied in the Öresund region focusing on their vegetation structure and canopy stratification. Crown height and tree height together with crown projections where the main parameters used to evaluate the structure of the stands. The data was analyzed using a wide range of scientifically approaches including, the quantity stratification models LMS and TSTRAT. The results show that a three layered structure can be achieved within thirty years after plantation. The key element for achieving a multilayered structure where found to be a combination of both species mixture and management. A species mixture with oak and not to many other tree species together with some middle layer species and the low growing shade tolerant bush species like Alpine Currant Ribes alpinum proved to be one good alternative. Depending on the species mixture and the management goal, two different management tactics could be used for the thinning of the stand. One where the tree layer was favoured and one where the middle layer was favoured giving rise to different kind of multilayered forest structures. del av den urbana skogen men kunskapen kring hur man kan anlägga och sköta sådana planteringar är tämligen liten. Kunskapsbilden som finns i dagsläget kring rikt skiktade bestånd, berör främst skiktning i äldre kulturskogar och merparten av kunskapen kring hur man planterar och sköter skog är inriktad på enskiktade monokulturer. Målet med detta arbete har därför varit att försöka utvidga den praktiska och teoretiska kunskapen kring rikt skiktade unga planterade bestånd. Som en grund för detta undersöktes tre kunskapskulturer som berör ämnet, den ekologiska, den skogliga och den landskapliga. Utifrån dessa teoretiska ramverk kan man förstå att många processer verkar mot att flerskiktade struktur utbildas under ett planterat bestånds ungdom. Samtidigt ger de olika ramverken en förståelse varför och hur man kan påverka de olika processerna så att en flerskiktad struktur lättare kan utvecklas. För att fördjupa den praktiska och teoretiska kunskapsbilden har en undersökande studie av naturlika skogsplanteringar utformats. Studien omfattar 12 bestånd i Öresund regionen och dessa har analyserats utifrån dess skiktning med hjälp av bland annat höjd, kronhöjd och kronprojektioner. Skiktningen har främst analyserats med hjälp av de kvantitativa skiktningsmodellerna LMS och TSTRAT. Resultatet visar att upp till tre tydliga skikt kan uppnås i en naturlik skogsplantering inom en 30 års period i Öresund regionen med rätt kombination av artblandning och skötsel. Avgörande för ett lyckat resultat verkar vara en artblandning med ek och endast några få andra arter i trädskiktet kombinerat med några robusta buskträdarter samt skuggtåliga låga buskar såsom måbär. Skötselmässigt finns sedan två huvudalternativ beroende på målsättning och artblandningen. Antigen lägger man fokus på att trädskiktet ska separeras ifrån mellanskiktet så fort som möjligt genom att man eftersträvar att kronorna lyfts högt eller så hugger man tidigare i trädskiktet och gynnar mellanskiktet med buskträdarterna istället. Kombinationen av olika artblandningar och skötselstrategier ger sedan olika strukturella typer. 2009-04-03 Other NonPeerReviewed application/pdf sv https://stud.epsilon.slu.se/12699/1/wistrom_b_171020.pdf Wiström, Björn, 2009. Skiktning och strukturell utveckling i unga naturlika skogsplanteringar : med fokus på artsammansättning och tidig skötsel. UNSPECIFIED, Alnarp. Alnarp: (LTJ, LTV) > Dept. Of Landscape Architecture, Planning and Management <https://stud.epsilon.slu.se/view/divisions/LMNR=3A644.html> urn:nbn:se:slu:epsilon-s-8081 swe |
| spellingShingle | Landscape Management, Design, and Construction (until 121231) Landscape architecture Wiström, Björn Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title | Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title_full | Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title_fullStr | Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title_full_unstemmed | Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title_short | Skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| title_sort | skiktning och strukturell utveckling i unga naturlika skogsplanteringar |
| topic | Landscape Management, Design, and Construction (until 121231) Landscape architecture |
| url | https://stud.epsilon.slu.se/12699/ https://stud.epsilon.slu.se/12699/ |