scholarly journals Accumulation of standing aboveground biomass carbon in Scots pine and Norway spruce stands affected by genetic variation

2021 ◽  
Vol 496 ◽  
pp. 119476
Author(s):  
Daniel J. Chmura ◽  
Marzenna Guzicka ◽  
Roman Rożkowski
Keyword(s):  
Genetic Variation ◽  
Norway Spruce ◽  
Scots Pine ◽  
Aboveground Biomass ◽  
Biomass Carbon ◽  
Spruce Stands

A method for predicting tree dimensions in Scots pine and Norway spruce stands

1994 ◽  
Vol 65 (2-3) ◽  
pp. 123-134 ◽  
Author(s):  
Timo Pukkala ◽  
Taneli Kolström ◽  
Jari Miina
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
Spruce Stands

Growth responses following nitrogen and N–P–K–Mg additions to previously N-fertilized Scots pine and Norway spruce stands on mineral soils in Sweden

2001 ◽  
Vol 31 (5) ◽  
pp. 899-909 ◽  
Author(s):  
Staffan Jacobson ◽  
Folke Pettersson
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
N Fertilization ◽  
Nutrient Deficiencies ◽  
Growth Responses ◽  
Growth Increase ◽  
Spruce Stands ◽  
Fertilization Effect ◽  
Mineral Soils

To study growth responses to refertilization, 12 Scots pine (Pinus sylvestris L.) and 6 Norway spruce (Picea abies (L.) Karst.) stands used in long-term nitrogen (N) fertilization experiments were refertilized with N, either alone or with various combinations and doses of phosphorus (P), potassium (K), and magnesium (Mg). Many of the experimental plots had previously been subjected to heavy N fertilization regimes over a period of 20–30 years. On average, for all the experiments, the latest N addition resulted in a significant growth increase, corresponding to 57% of the mean annual volume increment and comparable with the response to the initial fertilization. Differences in growth response between fertilization with N alone or in combination with P–K–Mg were in most cases insignificant for both tree species. Overall, the joint addition of P–K–Mg resulted in a nonsignificant additional growth increase of 0.2 m3·ha–1·year–1, corresponding to 6% of the N fertilization effect. Repeated additions of N alone had no effect on the P, K, and Mg concentrations in current-year needles. It was concluded that the repeated N fertilizations did not cause any serious nutrient deficiencies.

scholarly journals Light Use Efficiency of Aboveground Biomass Production of Norway Spruce Stands

2017 ◽  
Vol 65 (1) ◽  
pp. 9-16
Author(s):  
Michal Bellan ◽  
Irena Marková ◽  
Andrii Zaika ◽  
Jan Krejza
Keyword(s):  
Norway Spruce ◽  
Aboveground Biomass ◽  
Photosynthetically Active Radiation ◽  
Climatic Conditions ◽  
Light Use Efficiency ◽  
Active Radiation ◽  
Spruce Stands ◽  
Use Efficiency ◽  
Study Sites ◽  
Radiation Use

Light use efficiency (LUE or photosynthetically active radiation use efficiency) in production of young spruce stands aboveground biomass was determined at the study sites Rájec (the Drahanská vrchovina Highland) and Bílý Kříž (the Moravian‑Silesian Beskids Mountains) in 2014 and 2015. The LUE value obtained for the investigated spruce stands were in the range of 0.45 – 0.65 g DW MJ–1. The different LUE values were determined for highland and mountain spruce stand. The differences were caused by growth and climatic conditions and by the amount of assimilatory apparatus (LAI).

scholarly journals Validating the predicted saw log and pulpwood proportions and gross value of Scots pine and Norway spruce harvest at stand level by Most Similar Neighbour analyses and a stem quality database

Silva Fennica ◽  
2018 ◽  
Vol 52 (4) ◽  
Author(s):  
Jukka Malinen ◽  
Harri Kilpeläinen ◽  
Erkki Verkasalo
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
External Quality ◽  
Log Reduction ◽  
Unit Value ◽  
Stem Quality ◽  
Spruce Stands ◽  
Average Unit ◽  
Wood Procurement ◽  
Tree Quality

Detailed pre-harvest information about the volumes and properties of growing stocks is needed for increased precision in wood procurement planning for just-in-time wood deliveries by cut-to-length (CTL) harvesters. In the study, the non-parametric Most Similar Neighbour (MSN) methodology was evaluated for predicting external quality of Scots pine and Norway spruce, expressed as stem sections fulfilling the saw log dimension and quality requirements of Finnish forest industry, as they affect the recovery of timber assortments and the value of a pre-harvest stand. Effects of external tree quality were evaluated using saw log recovery and saw log reduction caused by stem defects, as well as total timber value (€) and average unit value (€ m) in a stand. Root mean square error (RMSE) of saw log recovery and reduction were 9.12 percentile points (pp) for Scots pine and 6.38 pp for Norway spruce stands. In the unit value considerations, the predictions compared with measurements resulted in the RMSE of 3.50 € m and the bias of 0.58 € m in Scots pine stands and 2.60 € m, and 0.35 € m in Norway spruce stands, respectively. The presented MSN based approach together with the utilization of the external stem quality database included in the ARVO software could provide dimension and external quality predictions usable for pre-harvest assessment of timber stock at a stand level. This prediction methodology is usable especially in analyses where timber assortment recoveries, values and unit prices are compared when different bucking objectives are used.–3–3–3–3–3

scholarly journals Radial growth of Scots pine and Norway spruce stands as an indicator of soil and environmental conditions

2021 ◽  
Vol 875 (1) ◽  
pp. 012074
Author(s):  
B Aparin ◽  
B Babikov ◽  
D Zolotukhin ◽  
E Mingareeva
Keyword(s):  
Norway Spruce ◽  
Tree Ring ◽  
Scots Pine ◽  
Radial Growth ◽  
Ring Width ◽  
Tree Ring Width ◽  
Average Growth ◽  
Cyclical Pattern ◽  
Spruce Stands ◽  
Successive Change

Abstract The study presents an analysis of radial growth of Scots pine and Norway spruce trees growing on drained soils formed on varved clays at the sample sites of the Lisino Experimental Forestry (Lisino). Based on dendrochronological studies in Lisino, it has been found that the radial growth of Scots pine and Norway spruce is a sensitive indicator of changes in the soil water regime, climate, and phytocenotic relationships. On the basis of the character of tree-ring width growth, the growth charts allowed distinguishing zones with close to average growth values, as well as with increased and decreased values of radial growth. The cyclical pattern of tree ring width is well expressed in the successive change of zones. The availability of dendrochronological research materials with precise spatial and temporal reference makes it possible to organize monitoring of radial growth of trees as an indicator of changes in climate and habitat conditions.

Effects of logging residue harvest in thinnings on amounts of soil carbon and nutrients in Scots pine and Norway spruce stands

2012 ◽  
Vol 263 ◽  
pp. 31-38 ◽  
Author(s):  
Pekka Tamminen ◽  
Anna Saarsalmi ◽  
Aino Smolander ◽  
Mikko Kukkola ◽  
Heljä-Sisko Helmisaari
Keyword(s):  
Soil Carbon ◽  
Norway Spruce ◽  
Scots Pine ◽  
Spruce Stands ◽  
Logging Residue

Long-term responses of Scots pine and Norway spruce stands in Sweden to repeated fertilization and thinning

2014 ◽  
Vol 320 ◽  
pp. 118-128 ◽  
Author(s):  
Johan Bergh ◽  
Urban Nilsson ◽  
H.Lee Allen ◽  
Ulf Johansson ◽  
Nils Fahlvik
Keyword(s):  
Norway Spruce ◽  
Scots Pine ◽  
Spruce Stands

scholarly journals Forest decline has not reduced genetic diversity of naturally regenerated Norway spruce from the Beskids, Poland

2015 ◽  
Vol 64 (1-6) ◽  
pp. 270-278 ◽  
Author(s):  
Elżbieta Chomicz-Zegar ◽  
J. A. Nowakowska ◽  
A. Tereba
Keyword(s):  
Genetic Diversity ◽  
Genetic Variation ◽  
Norway Spruce ◽  
Forest Decline ◽  
Gene Diversity ◽  
Young Generation ◽  
Primeval Forest ◽  
Initial Stage ◽  
Spruce Stands ◽  
High Level

AbstractNorway spruce forests decline in the Beskids raises concerns about reduction of genetic variation in a next generation of forest. We aim to determine whether the genetic diversity in declining spruce stands was successfully transmitted to its self-seeded progeny. Using three nuclear microsatellite markers, we carried out the genetic assessment of naturally regenerated progeny and compered them with their maternal stands at an initial stage of decline. We investigated three spruce stands from the Śląski and Żywiecki Beskid and one primeval forest from the Tatras, as a reference. We noticed a high level of gene diversity, allelic richness and an effective number of alleles in progeny of all stands, without differences between declining stands from the Beskids and the primeval forest. The gene diversity was similar in maternal trees and their offspring. Higher gene diversity and generally higher number of alleles were noticed in young generation of stands. Genetic identity between generations was high in analyzed seed stands and the highest in the primeval forest. The results we presented indicate no significant effect of drastic reduction in the population size due to the forest decline on the level of genetic variation in self-seeded progeny of Norway spruce from the Beskids.

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