Concentrations of Mineral Nutrients and Arginine in Needles of Picea Abies Trees from Different Areas in Southern Sweden in Relation to Nitrogen Deposition and Humus Form

Concentrations of Mineral Nutrients and Arginine in Needles of Picea Abies Trees from Different Areas in Southern Sweden in Relation to Nitrogen Deposition and Humus Form. Ericsson, A., Walheim, M., Nordén, L., & Näsholm, T. Ecological Bulletins, 1995.
abstract bibtex

The study describes the occurrence of mineral nutrient imbalances in Picea abies (L.) Karst. trees in southern Sweden in relation to both deposition of nitrogen and humus form. Concentrations of mineral nutrients and free arginine were used to monitor imbalanced nutrition of trees caused by surplus nitrogen availability in the soil and/or low availability of other mineral nutrients. The major part of the investigation was performed on permanent sample plots within the Swedish National Forest Inventory (NFI) representing forests typical of the region and both mor and peat plots were sampled. A number of mor plots, laid out by the National Board of Forestry (NBF) were also sampled. The NBF plots were considered to suffer from the "new type" of forest decline in Sweden when they were selected and, therefore, represented typically damaged forests of the region. Although total nitrogen and arginine concentrations of the trees in the NFI-study were highest in the area with the highest nitrogen deposition, the concentrations were low. High arginine concentrations and low P/N ratios were found in NFI trees growing on peat plots. The NBF plots showed, in comparison with mor plots of the NFI-study, a considerably greater frequency with high needle arginine concentrations. It is concluded that, although trees on peat soils in southern Sweden tended to have greater mineral nutrient imbalances in areas with the highest airborne deposition, the humus form was more important for the development of nutrient imbalances than the deposition level. The importance of studying representative material of the region, when forest health is investigated, is discussed.

@article{RN814,
   author = {Ericsson, Anders and Walheim, Mats and Nordén, Lars-Gösta and Näsholm, Torgny},
   title = {Concentrations of Mineral Nutrients and Arginine in Needles of Picea Abies Trees from Different Areas in Southern Sweden in Relation to Nitrogen Deposition and Humus Form},
   journal = {Ecological Bulletins},
   number = {44},
   pages = {147-157},
   abstract = {The study describes the occurrence of mineral nutrient imbalances in Picea abies (L.) Karst. trees in southern Sweden in relation to both deposition of nitrogen and humus form. Concentrations of mineral nutrients and free arginine were used to monitor imbalanced nutrition of trees caused by surplus nitrogen availability in the soil and/or low availability of other mineral nutrients. The major part of the investigation was performed on permanent sample plots within the Swedish National Forest Inventory (NFI) representing forests typical of the region and both mor and peat plots were sampled. A number of mor plots, laid out by the National Board of Forestry (NBF) were also sampled. The NBF plots were considered to suffer from the "new type" of forest decline in Sweden when they were selected and, therefore, represented typically damaged forests of the region. Although total nitrogen and arginine concentrations of the trees in the NFI-study were highest in the area with the highest nitrogen deposition, the concentrations were low. High arginine concentrations and low P/N ratios were found in NFI trees growing on peat plots. The NBF plots showed, in comparison with mor plots of the NFI-study, a considerably greater frequency with high needle arginine concentrations. It is concluded that, although trees on peat soils in southern Sweden tended to have greater mineral nutrient imbalances in areas with the highest airborne deposition, the humus form was more important for the development of nutrient imbalances than the deposition level. The importance of studying representative material of the region, when forest health is investigated, is discussed.},
   ISSN = {03466868},
   year = {1995},
   type = {Journal Article}
}

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Karst. trees in southern Sweden in relation to both deposition of nitrogen and humus form. Concentrations of mineral nutrients and free arginine were used to monitor imbalanced nutrition of trees caused by surplus nitrogen availability in the soil and/or low availability of other mineral nutrients. The major part of the investigation was performed on permanent sample plots within the Swedish National Forest Inventory (NFI) representing forests typical of the region and both mor and peat plots were sampled. A number of mor plots, laid out by the National Board of Forestry (NBF) were also sampled. The NBF plots were considered to suffer from the \"new type\" of forest decline in Sweden when they were selected and, therefore, represented typically damaged forests of the region. Although total nitrogen and arginine concentrations of the trees in the NFI-study were highest in the area with the highest nitrogen deposition, the concentrations were low. High arginine concentrations and low P/N ratios were found in NFI trees growing on peat plots. The NBF plots showed, in comparison with mor plots of the NFI-study, a considerably greater frequency with high needle arginine concentrations. It is concluded that, although trees on peat soils in southern Sweden tended to have greater mineral nutrient imbalances in areas with the highest airborne deposition, the humus form was more important for the development of nutrient imbalances than the deposition level. 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