Browsing Vitenskapelige artikler by Author "Hanssen, Kjersti Holt"
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Fertilization of Norway spruce forest with wood ash and nitrogen affected both tree growth and composition of chemical defence
Hanssen, Kjersti Holt; Asplund, Johan; Clarke, Nicholas; Selmer, Ruben; Nybakken, Line (Peer reviewed; Journal article, 2020-10-05)We fertilized a Norway spruce (Picea abies (L.) Karst.) stand on rich mineral soil with 3 t ha−1 of wood ash (ASH), 150 kg ha−1 of nitrogen (N) or a combination of wood ash and nitrogen (ASH + N), in addition to unfertilized ... -
Germination and seedling establishment of Norway spruce (Picea abies) after clear-cutting is affected by timing of soil scarification
Fløistad, Inger; Hylen, Gro; Hanssen, Kjersti Holt; Granhus, Aksel (Journal article; Peer reviewed, 2017-11-25)Natural regeneration of Norway spruce (Picea abies (L.) Karst.) is a relatively common practice in Norway on medium to low site indices. However, seedling establishment is often hampered by rapid regrowth of competing ... -
Influence of mechanical site preparation on regeneration success of planted conifers in clearcuts in Fennoscandia – a review
Sikström, Ulf; Hjelm, Karin; Hanssen, Kjersti Holt; Saksa, Timo; Wallertz, Kristina (Peer reviewed; Journal article, 2020-03-25)In the Nordic countries Finland, Norway and Sweden, the most common regeneration method is planting after clearcutting and, often, mechanical site preparation (MSP). The main focus of this study is to review quantitative ... -
Short-term effects of hardened wood ash and nitrogen fertilisation on understory vegetation in a Norway spruce forest in south-east Norway
Økland, Tonje; Nordbakken, Jørn-Frode; Clarke, Nicholas; Hanssen, Kjersti Holt (Peer reviewed; Journal article, 2022-07-26)In a fertiliser experiment in a Norway spruce forest in SE Norway, four treatments were applied in a block design with three replicates per treatment. Treatments included 3 t wood ash ha−1 (Ash), 150 kg nitrogen ha−1 (N), ... -
Stem taper and bark functions for Norway spruce in Norway
Pukkala, Timo; Hanssen, Kjersti Holt; Andreassen, Kjell (Journal article; Peer reviewed, 2019-09-16)Based on data from long-term experimental fields with Norway spruce (Picea abies (L.) H. Karst.), we developed new stem taper and bark functions for Norway. Data was collected from 477 trees in stands across Norway. Three ...