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Effekten av gödsling på björkars (Betula pendula) specifika bladarea (SLA) och tillväxt
Linnaeus University, Faculty of Technology, Department of Forestry and Wood Technology.
2019 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
The effect of fertilization on birches (Betula pendula) specific leaf area (SLA) and growth (English)
Abstract [en]

The number one highest growth-limiting factor in Swedish forests is nitrogen, because of that fertilization often gives a significant growth increase, wherever you are in Sweden. Specific leaf area (SLA) can be used as a standard measurement of how much resources a tre has to use to build up light absorbing leaf area of needles/leaves. Since there is a strong linear relationship between tree growth and leaf area, there should also be a clear correlation between each leaf area of single trees and its diameter, basal area and volume growth (Xiao, 2005).The datamaterial for the study was collected at the forest estate, Toftaholm, near Ljungby in Kronoberg County (57 ° 0´N; 14 ° 3`E). Data were collected from birches growing in both in fertilized and unfertilized young stands of Birch during the growing season of 2018. The biomass sampling occured in May, July and August. At each occasion, samples were taken from 40 birches (a total of 120 samples were collected).The average value of SLA for all samples on the fertilized treatment was 17.33 m² / kg and 16.41 m² / kg for the non-fertilized treatment (Figure 4). The significance analysis obtained a p-value of 0.019 (Table 2), which confirms that there is a significant difference between the fertilized and the unfertilized treatment.In the significance analysis, it could be concluded that with a 95% probability, there is a significant difference between the comparison of all samples from the fertilized (G) and non-fertilized (OG) treatment.

Place, publisher, year, edition, pages
2019. , p. 23
Keywords [en]
SLA, fertilization, leaf area, growth, birch
National Category
Forest Science
Identifiers
URN: urn:nbn:se:lnu:diva-90151OAI: oai:DiVA.org:lnu-90151DiVA, id: diva2:1370838
Subject / course
Skogs- och träteknik
Educational program
Bachelor of Science in Forest Sciences Program, 180 credits
Supervisors
Examiners
Available from: 2019-11-18 Created: 2019-11-18 Last updated: 2019-11-18Bibliographically approved

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CiteExportLink to record
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  • apa
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