Home About Browse Search
Svenska


Effects of sustainable management practices on fine-root systems in willow (Salix viminalis, S. dasyclados), grey alder (Alnus incana) and Norway spruce (Picea abies) stands

Püttsepp, Ülle (2004). Effects of sustainable management practices on fine-root systems in willow (Salix viminalis, S. dasyclados), grey alder (Alnus incana) and Norway spruce (Picea abies) stands. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae. Silvestria, 1401-6230 ; 283
ISBN 91-576-6517-6
[Doctoral thesis]

[img]
Preview
PDF
346kB

Abstract

Fine roots of trees can be sensitive indicators of environmental change. This thesis analyses the response of tree fine-root (<1 and <2 mm in diameter) systems in deciduous and conifer stands to different sustainable management regimes. Separate studies were conducted in plantations and in natural stands of the Baltic Sea region. Clones of Salix viminalis and S. dasyclados in an unfertilised short-rotation forestry (SRF) plantation in Estonia (58°42¢N, 26°55¢E) were studied to compare the decomposition dynamics of fine roots, and the amount, structure and species diversity of associated ectomycorrhizal (EM) communities. The level of EM colonisation was estimated in stands of Alnus incana (Sweden, Estonia). The effect of granulated wood ash (GWA) on the distribution, morphology and chemistry of fine roots was analysed in a Picea abies stand in SW Sweden (56o33¢N, 13o13¢E), a site exposed to high acid deposition. The fine roots of S. dasyclados were a more recalcitrant substrate for decomposition (k=0.162) than those of S. viminalis (k=0.325), because of the higher initial concentration of acid detergent lignin of the former. The N in decomposing fine roots was retained in the system, as indicated by its decrease and immobilisation in the substrates. The level of EM was high in studied Salix spp. and Alnus incana roots. Salix dasyclados was characterised by a higher proportion of colonised root tips (94%) than S. viminalis (75%). Nine EM fungal taxa were identified in Salix spp. roots in SRF - a relatively low diversity compared with established forest ecosystems. The long-term effect of GWA on fine roots of Picea abies was mainly revealed in decreased necromass (1-2 mm root fraction), in decreased specific root length, and in increased P/N and Ca/N proportions by mass (1-2 mm). Fine-root biomass (<1 mm) was significantly greater in the lower humus in the GWA treatment, but this did not affect the total biomass in the whole soil profile. Wood ash in granulated form and in the long term caused only modest changes in the fine-root system, and can be used as a compensatory fertiliser in Picea abies stands. The results are applicable for maintaining sustainable forest ecosystems.

Authors/Creators:Püttsepp, Ülle
Title:Effects of sustainable management practices on fine-root systems in willow (Salix viminalis, S. dasyclados), grey alder (Alnus incana) and Norway spruce (Picea abies) stands
Year of publishing :May 2004
Volume:283
Number of Pages:23
Papers/manuscripts:
NumberReferences
ALLI. Püttsepp Ü., Lõhmus K., Koppel A. Decomposition of fine roots and a-cellulose in a short rotation willow (Salix spp.) plantation on abandoned agricultural land (manuscript) II. Püttsepp Ü., Rosling A., Taylor A. F. S. Ectomycorrhizal fungal communities associated with Salix viminalis L. and S. dasyclados Wimm. clones in a short- rotation forestry plantation (accepted in: Forest Ecology and Management) III. Püttsepp Ü., Lõhmus K., Persson H., Ahlström K. Effect of granulated wood ash application on fine-root distribution and morphology in an acidified Norway spruce (Picea abies (L.) Karst.) stand in SW Sweden (manuscript) IV. Püttsepp Ü., Lõhmus K., Persson H., Ahlström K. Effect of granulated wood ash on fine-root chemistry in an acidified Norway spruce (Picea abies (L.) Karst.) stand in SW Sweden (manuscript) V. Granhall U., Lõhmus, K. Püttsepp, Ü., Ostonen I. - "Mycorrhizae in Alnus incana" (accepted in: Riparian Alder Forests: their importance as buffer zones and bioenergy sources. Eds. Ü. Mander, K. Lõhmus. Kluwer Academic Publishers, in prep.)
Place of Publication:Uppsala
ISBN for printed version:91-576-6517-6
ISSN:1401-6230
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F40 Plant ecology
P Natural resources > P34 Soil biology
Subjects:Not in use, please see Agris categories
Agrovoc terms:roots, degradation, mycorrhizae, length, nutrients, forest plantations, picea abies, salix, alnus incana
Keywords:fine roots, decomposition, acid detergent lignin, ectomycorrhiza, short-rotation forestry, granulated wood ash, vertical distribution of fine roots, specific root length, nutrient/N ratios
URN:NBN:urn:nbn:se:slu:epsilon-275
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-275
ID Code:568
Department:(NL, NJ) > Institutionen för ekologi och miljövård
Deposited By: Ülle Püttsepp
Deposited On:26 May 2004 00:00
Metadata Last Modified:02 Dec 2014 10:05

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits