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Adaptation of Scots pine provenances to changing temperatures

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. Scots pine provenance trials.

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Adaptation of Scots pine provenances to changing temperatures

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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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