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Eucalyptus globoidea productivity in New Zealand Dean Meason, Tobias Herrman, Christine Todoroki.

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Presentation on theme: "Eucalyptus globoidea productivity in New Zealand Dean Meason, Tobias Herrman, Christine Todoroki."— Presentation transcript:

1 Eucalyptus globoidea productivity in New Zealand Dean Meason, Tobias Herrman, Christine Todoroki

2 Outline Ecosystem black box and drivers of productivity Process-based modelling & its importance for alternative species MPI project – Predicting productivity and carbon sequestration potential of eucalypt species Summary

3 Potential rooting depth – Landcare/Scion Multiple site factors impact productivity

4 Empirical modelling: “black box” approach Forest ecosystem BLACK BOX Ecosystem Input:Ecosystem Output: Different management techniques Desired outcome of the stand

5 Climate Change in New Zealand Temperature rises  1.6 to 2.0 o C in 2080 Rainfall changes  +-10 to15% in 2080 High variability and uncertainty

6 Stand Productivity PhotosynthesisTopographyTranspiration Soil depth Soil organic matter Carbon allocation Competition TemperatureRainfallSoil textureSoil fertility Drivers of Productivity

7 Empirical-based Forest Modelling Need thousands of plots over a long time period Ecosystem black box Static, not dynamic Radiata pine not as site sensitive

8 From Sands 2000, CSIRO Process-based Forest Modelling 3-PG

9 MPI project Sustainable Land Management and Climate Change program (SLMACC) Quantify productivity and carbon sequestration potential of  Eucalyptus globoidea  Eucalyptus regnans Collaboration with NZDFI Building on previous eucalypt productivity spatial modelling

10 Eucalyptus fastigata plot network commons.wikipedia.com

11 Stem volume per hectare at age 30 Initial stocking 1250 sph No silviculture Eucalyptus fastigata

12 Stem volume per hectare at age 30 Initial stocking 1250 sph No silviculture Eucalyptus fastigata

13 Stem volume per hectare at age 30 Initial stocking 1250 sph No silviculture Eucalyptus fastigata

14 Stem volume per hectare at age 30 Initial stocking 1250 sph No silviculture Eucalyptus fastigata

15 Eucalypt species distribution commons.wikipedia.com E. fastigataE. globoideaE. regnans

16 Height differs by species

17 Stocking effects on stem quadratic mean diameter

18 Similar spatial relationships between species

19 t E. globoidea wood density is high

20 Site impacts E. globoidea productivity

21 Modelling of Carbon pools: Forest Carbon Predictor Inputs: Processing: Outputs:

22 Summary Process-based models ideal for species with limited data  Dynamic not static Strong correlations between E. fastigata and E. globoidea E. globoidea not as site sensitive as first feared E. globoidea has higher wood density than the “industrial” eucalypts  No regional differences

23 Next steps Finish 3-PG parameterisation for E. globoidea and E. regnans – Nov 2015 Create spatial productivity map identifying highly suitable areas – Jan 2016 Provide a realistic productivity range of E. globoidea’s potential – Jan 2016 Create carbon sequestration models for E. globoidea and E. regnans – Dec 2015 Share data and results with NZDFI

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