CARMA workshop Vancouver, Nov. 28-30, 2006
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Assessing the impacts of climate Assessing the impacts of climate change on caribou habitats in change on caribou habitats in North America using remote North America using remote sensing data sensing data CARMA workshop Vancouver, Nov. 28- 30, 2006 Wenjun Chen, Ian Olthof, Yu Zhang, Sylvain Leblanc, Ridha Touzi, Junhua Li, Costas Armenakis, Isabel Cyr (Climate Change Program - ESS/NRCan) Contact: [email protected]
description
Wenjun Chen, Ian Olthof, Yu Zhang, Sylvain Leblanc, Ridha Touzi, Junhua Li, Costas Armenakis, Isabel Cyr (Climate Change Program - ESS/NRCan). Assessing the impacts of climate change on caribou habitats in North America using remote sensing data. CARMA workshop Vancouver, Nov. 28-30, 2006. - PowerPoint PPT Presentation
Transcript of CARMA workshop Vancouver, Nov. 28-30, 2006
Assessing the impacts of climate Assessing the impacts of climate change on caribou habitats in change on caribou habitats in North America using remote North America using remote
sensing datasensing data
CARMA workshop Vancouver, Nov. 28-30, 2006
Wenjun Chen, Ian Olthof, Yu Zhang, Sylvain Leblanc, Ridha
Touzi, Junhua Li, Costas Armenakis, Isabel Cyr
(Climate Change Program - ESS/NRCan)
Contact: [email protected]
Caribou food production in the habitat
Vegetation species cover %
Leaf Aare Index;Biomass;Green-up date
Climate & land use scenarios
Caribou carrying capacity of the habitat
Ecosystem model
Ecotrophic Efficiency; Annual consumption of summer & winter diets by an “average” caribou; Lichen damage by caribou trampling;Consumption by other wildlife species
Caribou herd size
Optimal caribou harvest rate
Approach flowchartApproach flowchart
Foliage : stem ratio; Foliage turnover rate;Photosynthetic capacity
Field measurement + remote sensing + modeling integration
“Food Availability”
Land Cover map: Land Cover map: Porcupine Porcupine caribou herd caribou herd rangerange
Land Cover % mapsLand Cover % maps
0%
100%
Bare
Shrub
Grass
Conifer
Water
LUC detection example:
Ekati diamond mine1990, rgb=4,5,3 2000, rgb=4,5,3
Change mapIkonos image
Alaska
Yukon
N.W
.T
extent of calving
annual range
Green-up rate (May 1–June 21, 1985)
t
NDVI
1-km AVHRR
Slow
Quick
Data available: AVHRR since 1979, VGT since 1998
Porcupine caribou herd range
Field measurements
56
10
951
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575053
45
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55 56
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56
y = 0.9533x
R2 = 0.7819
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100
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0 1 10 100 1000Estaimted aboveground biomass (t/ha)
Me
as
ure
d a
bo
ve
gro
un
d b
iom
as
s (
t/h
a)
Aboveground biomass map
Changes in permafrost active-layer Changes in permafrost active-layer thickness from the 1850sthickness from the 1850s
to the 1990s
CSIROM
NCAR
to the 2090s
-50 500
Perm. disappearedPerm. reappeared
Changes in active layer thickness since the 1850s
Glacier
>50 (cm)
Potential response to climate changePotential response to climate change
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5
10
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20
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Total vascular aboveground biomass (t ha-1)
Dec
idu
ou
s sh
rub
ab
ove
gro
un
d
bio
mas
s (t
ha
-1)
0
0.1
0.2
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0 5 10 15 20
Total vascular aboveground biomass (t ha-1)
Gra
ss/h
erb
s ab
ove
gro
un
d
bio
mas
s (t
ha
-1)
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100
0 5 10 15 20
Total vascular aboveground biomass (t ha-1)
Lic
he
n %
co
ve
r
0
0.5
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1.5
2
2.5
0 5 10 15 20
Total vascular aboveground biomass (t ha-1)
Ev
erg
reen
sh
rub
ab
ove
gro
un
d
bio
mas
s (t
ha-1
)
Commitment
Our team is committed to revise and implement work plan according to CARMA partners’ needs, so that our works will be supportive and complementary to CARMA partners
ESS-NRCan, through the Climate Change Program, is committed to provide necessary A-base funding (salary and O&M) for this work over the next 3 years
Our team has the full support of ESS-NRCan, through the Climate Change Program, to become a CARMA partner and to fulfill all related responsibilities of a CARMA partner
