Stability of Site Index in Scots Pine (Pinus sylvestris, L.) Plantations over Year of Plantingin the Period 1900-1977 in Sweden

Elfving, Björn; Nyström, Kenneth

doi:10.1007/978-3-642-61178-0_7

Cited by 4 publications

(4 citation statements)

References 3 publications

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“…A selection of suitable microsites for planted seedling might also lead to increased growth because forests in Norway are characterised by large variation on this scale. For Scots pine in Sweden, Elfving and Nyströ m (1996a) observed higher site indices for stands planted after 1940, most likely caused by differences in stand establishment and early thinning. Planting of pine has never been a common practice in Norway.…”

Section: Discussionmentioning

confidence: 81%

“…This study compared stands of the same age but different year of germination and is therefore independent of site index models. Site index prediction models have therefore frequently included age as a variable in order to correct for the trend (Elfving, 1994;Elfving & Nyströ m, 1996a;Nilsen & Larsson, 1992;Schadauer, 1999;Tegnhammar, 1992). Unlike most others, we observed an abrupt change in the relationship between site index and stand establishment year around 1930, which we modelled using a segmented linear model.…”

Section: Discussionmentioning

confidence: 99%

“…Site indices for Norway spruce and Scots pine have been reported to vary with year of stand origin in Norway (Bøhler & Øyen, 2011;Nilsen & Larsson, 1992), Sweden (Elfving, 1994;Elfving & Nyströ m, 1996a;Hägglund & Lundmark, 1977), Finland (Mielikäinen & Timonen, 1996;Tamminen, 1993), and other regions in Europe (Hassall et al, 1994;Schadauer, 1999;Socha, 2008;Spiecker et al, 1996). Under the same site conditions, site indices for stands established later tend to be higher than for stands established earlier.…”

Section: Introductionmentioning

confidence: 98%

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Site index prediction from site and climate variables for Norway spruce and Scots pine in Norway

Sharma

Brunner

Eid

2012

Scandinavian Journal of Forest Research

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Site index prediction models for Norway spruce (Picea abies (L.) Karst.) and Scots pine (Pinus sylvestris L.) were developed using Norwegian National Forest Inventory data. A number of multiple linear regression models with different combinations of site and climate variables were developed in order to facilitate their application to a range of situations where the accessibility of various explanatory data differs. The best models used year of stand origin, temperature sum, vegetation type groups, soil depth, aspect, slope and latitude to predict site index. These models explained a large part of the total variation (R 2 adj: ¼ 0:86 and 0.72 for spruce and pine, respectively) and had little residual variation (RMSE 0 2.04 and 1.95 m for spruce and pine, respectively). Alternative models using only year of stand origin, temperature sum and vegetation type groups, or soil depth in addition, had slightly lower but still useful predictive power. All the developed models exhibited a strong non-linear effect of the year of stand origin on site indices, which varied when temperature sum was included. The increase in site indices along with increasing year of stand origin was significantly faster after about 1940 for both species. Similar time trends were observed for mean temperature and precipitation sums for the periods of stand growth, but only exhibited a faster increase after about 1960. Even though increased temperature and precipitation after 1990 seem to contribute to increased site indices, increased nitrogen availability and atmospheric CO 2 levels may also be important factors.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Site index prediction from site and climate variables for Norway spruce and Scots pine in Norway

Sharma

Brunner

Eid

2012

Scandinavian Journal of Forest Research

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“…BADEAU et al 1995BADEAU et al , 1996SKOVSGAARD, HEN-RIKSEN 1996;KÖHL 1996;ZING 1996;SCHADAUER 1996;KOTAR 1996;MONTERO et al 1996); C) pine 1. in Finland, Norway, Sweden, Germany an increase or stability of increment (e.g. ZETTERBERG et al 1996;MIELIKÄINEN, SENNOV 1996;MIELIKÄINEN, TIMO-NEN 1996;ELFVING, NYSTRÖM 1996;ERIKSSON, KARLSSON 1996;PRETZSCH 1996;UNTHEIM 1996;STERBA 1996); 2. in Switzerland, France, Austria, and Spain an increase in the increment in most areas (e.g. KÖHL 1996;BADEAU et al 1996;SCHADAUER 1996;MONTERO et al 1996).…”

Section: Discussionmentioning

confidence: 99%

Radial growth trends of fir (Abies alba Mill.), beech (Fagus sylvatica L.) and pine (Pinus sylvestris L.) in the Świętokrzyski National Park (Poland)

Podlaski¹

2002

J. For. Sci.

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The objectives of this study are to determine a trend of the radial growth at breast height (b.h.) and to compare the radial growth of trees of younger and older generations in the XX century for fir (Abies alba Mill.), beech (Fagus sylvatica L.) and pine (Pinus sylvestris L.) in the Świętokrzyski National Park. In the investigated area fir, 41 to 200–300 years of age at breast height, gradually regenerated its radial growth after a very strong decline during 1971–1990, and most likely the process of vitality reduction and death of its stands of various age is slowly coming to an end. Pine showed a systematic decrease in the radial increment during 1885–1994, and there were no distinct symptoms indicating a change of this unfavourable trend. Beech showed no significant decrease in the radial increment during 1885–1994. In the Świętokrzyski National Park the differences in the radial growth between younger and older generations were noticeable only in the case of beech. The radial growth of trees of different ages was very similar in the case of fir and pine.

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Growth and Yield

Bianchi,

Brunner,

Hanssen

et al. 2024

Managing Forest Ecosystems

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There is still a lack of knowledge on growth and yield (G&Y) in continuous cover forestry (CCF). Most published studies are on the selection system with Norway spruce. Published comparisons of the selection system with rotation forestry (RF) show contrasting results. Generally, there seems to be a trend toward faster stand growth in RF. However, there are many uncertainties due to several confounding factors, such as stand-density effects, site-quality classification, and/or growth models used. Most studies do not properly account for all these factors, making it difficult to generalise their results. The optimal stand density trade off for the selection system between stand growth and recruitment should be better investigated. Preliminary results show this could strongly affect stand growth. There is even less knowledge related to G&Y during conversion, a potential bottleneck for full implementation of CCF in the region.

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Stability of Site Index in Scots Pine (Pinus sylvestris, L.) Plantations over Year of Plantingin the Period 1900-1977 in Sweden

Cited by 4 publications

References 3 publications

Site index prediction from site and climate variables for Norway spruce and Scots pine in Norway

Site index prediction from site and climate variables for Norway spruce and Scots pine in Norway

Radial growth trends of fir (Abies alba Mill.), beech (Fagus sylvatica L.) and pine (Pinus sylvestris L.) in the Świętokrzyski National Park (Poland)

Growth and Yield

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