Regeneration failure of Scots pine changes the species composition of young forests

Sammanfattning

How seedling mortality and browsing affects species composition of regenerating forests has been mostly studied on a small scale. Yet, large-scale analyses based on extensive data are essential for robust prediction of species composition in young forests. In this study, we used a dataset from a national inventory of young forests (1-4 metres in height) to investigate the species composition of young forests across Sweden. We found that most of the regenerated forest area (almost 90%) was planted with Norway spruce (southern Sweden) and Scots pine (northern Sweden). Regeneration of Norway spruce was generally relatively successful but as a consequence of seedling mortality and browsing, almost 40% of the area regenerated with Scots pine will probably not develop into pine-dominated stands. Thus, low survival of Scots pine seedlings and trees can profoundly change the trajectory of species composition of the young forest from what was originally intended, and a large proportion of the young stands may develop into mixtures of conifers and broadleaves. While such mixtures may benefit certain biodiversity and ecosystem services, a loss of Scots pine dominated stands may also have adverse impacts on the economic returns as well as pine-dependent biodiversity and recreational values.

Nyckelord

browsing damage; Scots pine; Norway spruce; mixed forest

Publicerad i

Scandinavian Journal of Forest Research
2022, volym: 37, nummer: 1, sidor: 1445-1457
Utgivare: TAYLOR AND FRANCIS AS

SLU författare

• Ara, Mostarin

  • Institutionen för sydsvensk skogsvetenskap, Sveriges lantbruksuniversitet
    

• Nilsson, Urban

  • Institutionen för sydsvensk skogsvetenskap, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Skogsskadecentrum

Globala målen (SDG)

SDG15 Ekosystem och biologisk mångfald

UKÄ forskningsämne

Skogsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1080/02827581.2021.2005133

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/114698