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Adaptation of Scots Pine Provenances to Changing Temperatures - Study Results and Implications

This study explores the adaptation of Scots pine provenances to changing temperatures based on various trials and climate conditions. Results show significant differences in growth performance linked to provenance climate parameters. The discussion highlights the impact of warming on growth, potential transfer of provenances, and other factors influencing Scots pine growth. Open questions include the effect of new pests, responses to extreme weather, and implications for high-temperature sites.

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Adaptation of Scots Pine Provenances to Changing Temperatures - Study Results and Implications

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  1. Adaptation of Scots pine provenances to changing temperatures Volker Schneck & Mirko Liesebach Johann Heinrich von Thünen-Institut, Federal Research Institute for Rural Areas, Fisheries and Forest, Institute of Forest Genetics, Waldsieversdorf

  2. Scots pine provenance trials • 1. IUFRO-Provenance trial 1982/84 • 20 provenances from Europe, 7 sites in Germany • 2. Provenance trial with eastern provenances 1990/91 • 23 provenances (mainly Russia), 2 sites in Germany

  3. IUFRO-Provenance trial 1982/84 - Origin of provenances

  4. IUFRO-Provenance trial 1982/84characteristics of trial sites aridity index = annual precipitation / (annual temperature+10)

  5. IUFRO-Provenance trial 1982/84characteristics of trial sites

  6. IUFRO-Provenance trial 1982/84mean annual temperature of provenances

  7. IUFRO-Provenance trial 1982/84aridity index of provenances aridity index = annual precipitation / (annual temperature+10)

  8. IUFRO-Provenance trial 1982/84 Waldsieversdorfheight at age 22

  9. IUFRO-Provenance trial 1982/84 Waldsieversdorfstem volume/ha at age 22

  10. IUFRO-Provenance trial 1982/84 Waldsieversdorfrelationship of provenance temperature with height (age 22)

  11. IUFRO-Provenance trial 1982/84 Waldsieversdorfrelationship of provenance aridity index with height (age 22)

  12. IUFRO-Provenance trial 1982/84 Waldsieversdorf and Bensheim dbh at age 17

  13. IUFRO-Provenance trial 1982/84 – both sitesrelationship of provenance temperature with dbh (age 17) Waldsieversdorf Bensheim

  14. IUFRO-Provenance trial 1982/86 Bensheim

  15. 30° 35° 40° 45° 50° 55° 15° 20° 25° 60° 55° MV BB 50° Provenance trial 1990/91 – origin of provenances

  16. BB = 8.8°C MV = 8.2 °C Provenance trial 1990/91mean annual temperature of provenances

  17. MV = 35.2 BB = 29.6 Provenance trial 1990/91aridity index of provenances aridity index = annual precipitation / (annual temperature+10)

  18. Provenance trial 1990/91height at age 11 BB MVP

  19. Provenance trial 1990/91 – Brandenburg relationship of difference between trial site and provenance temperature with height (age 11)

  20. Provenance trial 1990/91 – Brandenburgrelationship of difference between trial site and provenance aridity index with height (age 11)

  21. Results • Significant differences in height growth and volume production between the provenances. • The local provenance is within the group of the well growing provenances but is not the best. • Growth at the trial sites is correlated with parameters of provenance climate. • Provenances from regions with temperatures up to 2.0 resp. 3.5 °C lower perform well under the warmer conditions at the trial sites. • There are other reasons like differences in mean temperature and annual precipitation for growth of provenances at the trial sites (soil, distribution of precipitation, vegetation period).

  22. Discussion • Warming up to 2.5 degrees don‘t decrease growth of Scots pine significantly (for provenances between 47° and 58° northern latitude). • For sites with lower mean temperatures than the trial site a transfer of provenances from west to east seems possible if global warming occurs. • Besides temperature and precipitation other factors have an strong influence on growth of Scots pine at least in central Europe. • Open questions: • appearance of new insects and pests • how does Scots pine react to extreme weather conditions (heat, drought) • What will happen with Scots pine at sites with high temperatures already today?

  23. IUFRO-Provenance trial 1982/84 Waldsieversdorf Thank you Lampertheim (SW-Germany) Suprasl (NE-Poland)

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