adaptation of forest operations to a changing climate dr. georgios xenakis and duncan ray ecology...
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![Page 1: Adaptation of forest operations to a changing climate Dr. Georgios Xenakis and Duncan Ray Ecology Division Forest Research, Northern Research Station,](https://reader035.vdocuments.mx/reader035/viewer/2022062423/5697c0261a28abf838cd5ef8/html5/thumbnails/1.jpg)
Adaptation of forest operations to a changing climate
Dr. Georgios Xenakis and Duncan Ray
Ecology Division Forest Research, Northern Research Station,
RoslinMidlothian EH25 9SY, UK
Email: [email protected]
5th November 2008 Silver Springs Hote, Cork
Mitigating climate change: The challenges and opportunities for Forestry in Ireland
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21/04/232
What is climate change
‘Climate change’ refers to a change in the state of the climate that can be
identified (e.g., using statistical tests) by changes in the mean and/or the
variability of its properties, and that persists for an extended period, typically
decades or longer. Climate change may be due to internal processes and/or
external forcings. Some external influences, such as changes in solar radiation and
volcanism, occur naturally and contribute to the total natural variability of the
climate system. Other external changes, such as the change in composition of the
atmosphere that began with the industrial revolution, are the result of human
activity.
IPCC 4th assessment report: WG1 Report “The physical science basis” Chapter 9 pp.667
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Adapting to climate change
Urgent need to provide
knowledge and guidance to
continue to sustainably
manage and maintain
resilient forests and
woodlands well adapted to
climate change
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Atmospheric CO2 and temperature: love or hate relationship
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CO2 concentrations: the last millenium
Source - Ernst (2007) Woods Hole
Projections of atmospheric CO2 concentrations for a range of global population and economic growth scenarios
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IPCC emissions scenarios
Source SRES (2000) IPCC Special Report, WMO/UN
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1961 - 19902000 - 20502050 - 2080
Mar–Oct increase of 200-300 day.degrees (15%) across Ireland by 2080
Accumulated temperature
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1960 -19902050 - 2080
Moisture Deficit
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What do we expect for the future?
Warmer climate
Winter
• Milder winters
• Dormancy, autumn frost, pests and diseases
Summer
• Warmer & longer growing season
• Increased growth (water & nutrients not limiting)
• Better quality broadleaved species
• Increased flowering and seed production
Wetter winter and drier summers
Winter• Shallow and restricted rooting• Increased risk of wind
disturbance• Soil damage – winter operations
Summer• Increased risk of summer
drought stress• Drought restricted growth
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How to adapt forest management?
• Which species will grow?
• Where should they come
from?
• What type of silviculture?
• Where do we get all these
information?
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CLIMADAPT project:
• within the CLIM-IT
programme of research
• Funded by COFORD’s
2007-2013 forest
research programme
Objective:
Develop a decision
support methodology,
similar to ESC, using
soil and climatic
information for Ireland
that can be used to
assess changes in
species suitability and
yield resulting from
different climate
scenarios
The CLIMADAPT project
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Ecological Site Classification
INPUTS
Soil typerooting depth, stones, texture
Lithology & soil type
Humus form
Indicator plants, %cover
Grid Reference
Elevation
ECOLOGICALSITE
CLASSIFICATION
SITE TYPE
Accumulated temperature
Moisture deficit
Windiness
Continentality
Soil Moisture Regime
Soil Nutrient Regime
ESC FACTORS
Tree species suitability
ESC yield prediction
Native woodland suitability
OUTPUTS
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Catchment
National
Landscape
Regional
Stand
Species suitable at multiple scales
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CLIMADAPT methodology
Methodology
• Climate
• Global
circulation model
for present and
future
• AT, MD, DAMS
• Delphi process June
2007
• Species
suitability
threshold
• Soil grid
• Develop suitability
curves
• Validate against
data (when available,
e.g., Sitka spruce)
• Build Graphic User
Interface (GUI) and
related technology
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Source: Broadmeadow et al. 2005, Forestry 78(2)
Provenances - Climate matching
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Insects and pathogens
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Wind storms
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Annual weather & extreme events
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N-S transect
North
South
Frequency
(years per decade)
No data
North
South
Frequency of high MD (>=200mm) for A2
Actual Predicted
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W-E transect
East
West
Drought frequency
(years per decade)
No data
Actual Predicted
Frequency of high MD (>=200mm) for A2
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Climate
• Warmer climate • Increased growth (>1 YC)
• Faster growth of pests
• Wetter in winter – drier in summer • Increased winter water logging – shallower roots
• Reduced tree stability
Species choice and where
• Droughty soils unsuitable for spruce
• More Douglas fir in S & E – more drought tolerant
• More pedunculate oak less ash, beech
• S & E more favourable for quality broadleaves
• Colonisation of ‘non-native’ trees
• Climate change tolerant species – Monterey pine, southern beech (rauli and roble)
• Climate tolerant provenances from NW France
Silviculture
• Continuous Cover Forestry (CCF) – LISS
• Mixed species stands
• Mixed structure & age class stands
Risk management
• Increased windthrow
• Invertebrate pests – e.g. green spruce aphid, bark beetles
Strategic planning
• DSS & Knowledge management – strategic and operational planning with CLIMADAPT
Adaptation recommendations