Belowground resource utilization in monocultures and mixtures of Scots pine and Norway spruce

Lutter, Reimo; Henriksson, Nils; Lim, Hyungwoo; Blaško, Róbert; Magh, Ruth-Kristina; Näsholm, Torgny; Nordin, Annika; Lundmark, Tomas; Marshall, John D.

doi:10.1016/j.foreco.2021.119647

Cited by 7 publications

(4 citation statements)

References 66 publications

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“…Norway spruce has shallower root systems than Scots pine, potentially reducing intraspecific competition for water in mixed stands (Fichtner et al, 2017). In contrast, Lutter et al (2021) found that these species' roots overlap in mixed stands at boreal sites, suggesting competition for resources among trees of both species. They also showed that both species enlarged their root system in mixed stands.…”

Section: Discussionmentioning

confidence: 91%

Timing and duration of drought modulate tree growth response in pure and mixed stands of Scots pine and Norway spruce

et al. 2022

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1. Climate change is increasing the severity and frequency of droughts around the globe, leading to tree mortality that reduces production and provision of other ecosystem services. Recent studies show that growth of mixed stands may be more resilient to drought than pure stands. The two most economically important and widely distributed tree species in Europe are Norway spruce (Picea abies (L.) Karst) and Scots pine (Pinus sylvestris L.), but little is known about their susceptibility to drought when coexist.2. This paper analyses the resilience (resistance, recovery rate and recovery time) at individual-tree level using a network of tree-ring collections from 22 sites along a climatic gradient from central Europe to Scandinavia. We aimed to identify differences in growth following drought between the two species and between mixed and pure stands, and how environmental variables (climate, topography and site location) and tree characteristics influence them.3. We found that both the timing and duration of drought drive the different responses between species and compositions. Norway spruce showed higher vulnerability to summer drought, with both lower resistance and a longer recovery time than Scots pine. Mixtures provided higher drought resistance for both species compared to pure stands, but the benefit decreases with the duration

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Section: Discussionmentioning

confidence: 91%

Timing and duration of drought modulate tree growth response in pure and mixed stands of Scots pine and Norway spruce

et al. 2022

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“…On the other hand, Norway spruce suffered from light competition due to canopy stratification, growing slower in mixtures than pure stands (Holmström et al, 2018;Mina et al, 2018). Despite a potential advantage of mixtures in terms of productivity (Ruiz-Peinado et al, 2021), both species could suffer from competition for light and water resources in mixed stands (Huuskonen et al, 2021a;Lutter et al, 2021). In this regard, the admixture of Scots pine with Norway spruce decreased basal area growth in a way that might not have been considered properly in the Motti model.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of growth models for mixed forests used in Swedish and Finnish decision support systems

Aldea

Bianchi

Nilsson

et al. 2023

Forest Ecology and Management

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“…First, our NPK treatment resulted in increased mineral N fluxes and soil N stock, validating the efficacy of the treatments on soil N availability. Second, roots of pine trees can take up 90% of soil nutrients within a 3 m distance and the uptake distance becomes even shorter when nutrients are added 33 , 34 . So the trees in the center of the plots must have been responsive.…”

Section: Discussionmentioning

confidence: 99%

No impact of nitrogen fertilization on carbon sequestration in a temperate Pinus densiflora forest

Baek

Lim

Noh

et al. 2023

Sci Rep

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Carbon (C) sequestration capacity in forest ecosystems is generally constrained by soil nitrogen (N) availability. Consequently, N fertilization is seen as a promising tool for enhancing ecosystem-level C sequestration in N-limited forests. We examined the responses of ecosystem C (vegetation and soil) and soil N dynamics to 3 years of annual nitrogen-phosphorus-potassium (N3P4K1 = 11.3 g N, 15.0 g P, 3.7 g K m−2 year−1) or PK fertilization (P4K1), observed over 4 years in a 40-year-old Pinus densiflora forest with poor N nutrition in South Korea. PK fertilization without N was performed to test for PK limitation other than N. Neither tree growth nor soil C fluxes responded to annual NPK or PK fertilization despite an increase in soil mineral N fluxes following NPK fertilization. NPK fertilization increased the rate of N immobilization and 80% of the added N was recovered from mineral soil in the 0–5 cm layer, suggesting that relatively little of the added N was available to trees. These results indicate that N fertilization does not always enhance C sequestration even in forests with poor N nutrition and should therefore be applied with caution.

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Belowground resource utilization in monocultures and mixtures of Scots pine and Norway spruce

Cited by 7 publications

References 66 publications

Timing and duration of drought modulate tree growth response in pure and mixed stands of Scots pine and Norway spruce

Timing and duration of drought modulate tree growth response in pure and mixed stands of Scots pine and Norway spruce

Evaluation of growth models for mixed forests used in Swedish and Finnish decision support systems

No impact of nitrogen fertilization on carbon sequestration in a temperate Pinus densiflora forest

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