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Optimum nutrition and nitrogen saturation in Scots pine stands

Tamm, Carl Olof and Aronsson, Aron and Popovic, Budomir and Flower-Ellis, Jeremy (1999). Optimum nutrition and nitrogen saturation in Scots pine stands. Technical Report. Uppsala: (S), Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 206
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Abstract

Long-term field experiments are described, in which nitrogen and other plant nutrients were added regularly to young Scots pine stands at two sites in Sweden, Lisselbo (1969-1988) and Norrliden (1971-1989; some treatments still in progress). A main aim was to establish a range of needle nitrogen concentration levels, as stable as possible, and to study the effects of these and of other factors (other added nutrients, soil acidity changes, irrigation) on tree growth and tree nutrient status. The results confirmed previous experience that nitrogen supply normally is a growth-limiting factor in boreal forest, but showed that regular nitrogen additions can induce boron and magnesium deficiency, and low internal concentrations in the trees, e.g. of potassium and phosphorus. Other aspects of ecosystem functioning at varied nitrogen supply-biomass production, nutrient balances for several elements; vegetation changes, soil acidity changes, nitrification, studied by ourselves or by cooperating research groups-are reviewed. The importance of long-term field experiments in the study of urgent environmental problems, such as nitrogen saturation and soil acidification, is discussed.

Authors/Creators:Tamm, Carl Olof and Aronsson, Aron and Popovic, Budomir and Flower-Ellis, Jeremy
Title:Optimum nutrition and nitrogen saturation in Scots pine stands
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1999
Number:206
Number of Pages:126
Place of Publication:Uppsala
Publisher:Swedish Univ. of Agricultural Sciences
ISBN for printed version:91-576-5958-3
ISSN:0039-3150
Language:English
Publication Type:Report
Refereed:No
Full Text Status:Public
Subjects:Obsolete subject words > NATURAL SCIENCES > Biology > Organism biology > Plant physiology
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:Pinus sylvestris, Picea abies, mineral nutrition, nutrient store, nutrient recovery, nutrient depletion, base saturation, exchange capacity, foliar sampling, litterfall
URN:NBN:urn:nbn:se:slu:epsilon-1-102
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-1-102
ID Code:3013
Department:(S)
Deposited By: Aina Svensson
Deposited On:22 Jan 2007 00:00
Metadata Last Modified:02 Dec 2014 10:18

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