Elaboration of country specific emission factors from ... · emission factors from organic soils in...
Transcript of Elaboration of country specific emission factors from ... · emission factors from organic soils in...
LIFE REstore | LIFE14 CCM/LV/001103
Arta Bārdule, Aldis Butlers, Gints Spalva, Ainārs Lupiķis, Kaido Soosar, Andis LazdiņšLSFRI Silava, Riga street 111, Salaspils LV-2169Phone: +37126386458, E-mail: [email protected]
Elaboration of country specific emission factors from organic soils in Latvia according to LIFE REstore
project resultsJRC LULUCF workshop 201928-29 May 2019, Varese (Italy)
LIFE REstore | LIFE14 CCM/LV/001103
The GHG inventory improvement targets of the LIFE REstore project
● Elaboration of CO2 , CH4 and N2O for peat extraction sites in raised and transitional bogs for different land use practices.
● Elaboration of activity data for calculation of GHG emissions from managed wetlands.
● Evaluation of potential impact of management approach and land use changes on GHG emissions in former peat extraction sites.
● The applied methodology is fully compliant with the methodologies used in similar studies in Estonia.
LIFE REstore | LIFE14 CCM/LV/001103
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GHG emissions due to use of peat in horticulture GHG emissions from soil
GH
G e
mis
sion
s, k
tons
CO
2 eq
.GHG emission from managed wetlands in the National GHG
inventory of Latvia
LIFE REstore | LIFE14 CCM/LV/001103
Land use types in details, each represented by 3-4 plots
● Peat extraction site.● Partially extracted peatland, poorly developed vegetation.● Partially extracted peatland, covered by bushes and herbaceous
plants.● Perennial grassland (pasture).● Cropland (cereals and sown grasses).● Cropland (legumes).● Plantations of blackberries.● Plantations of cranberries.● At least 20 years old pine or spruce stands.● At least 20 years old birch stands.● Natural raised bog.● Natural transitional bog.
LIFE REstore | LIFE14 CCM/LV/001103
Location of sampling sites
LIFE REstore | LIFE14 CCM/LV/001103
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0%
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Peat extraction field Rewetted peatland Flooded area Settlements Forest land Cropland and grassland
Contribution of LIFE REstore to improvement of activity data –
managed of organic soils
LIFE REstore | LIFE14 CCM/LV/001103
Area reported under managed wetlands
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Peat extraction field Rewetted areas Flooded areas
Are
a, k
ha
LIFE REstore | LIFE14 CCM/LV/001103
Example of land uses in extracted peatland
LIFE REstore | LIFE14 CCM/LV/001103
Management of peatlands and GHG emissions
CH4 CO2
DOC
CH4
CO2
DOC
LIFE REstore | LIFE14 CCM/LV/001103
Field sampling equipment
LIFE REstore | LIFE14 CCM/LV/001103
Data verification and quality control procedures
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f(x) = 1056,99 x + 522,21R² = 0,81
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f(x) = 766,33 x + 515,04R² = 0,99
CO
2, p
pm
LIFE REstore | LIFE14 CCM/LV/001103
Collection of litter samples in forest lands
LIFE REstore | LIFE14 CCM/LV/001103
CO2 soil fluxes
Soil erosion
LIFE REstore | LIFE14 CCM/LV/001103
Seasonal dynamics of CO2-C emissions
LIFE REstore | LIFE14 CCM/LV/001103
Groundwater level in different land use and vegetation type categories
Average ± min , max
Peat e
xtra
ction
After e
xtra
ction
, with
out v
eget
ation
After e
xtra
ction
, with
veg
etat
ion
Peren
nial g
rass
land
Cropla
nd –
cer
eals
Cropla
nd –
legu
mes
Fores
t – p
ine
Fores
t – b
irch
Raised
bog
Trans
itiona
l bog
Bluebe
rries
Cranb
errie
s-200
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0
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Cm
LIFE REstore | LIFE14 CCM/LV/001103
Groundwater level dynamics in the intact raised and transitional bogs
LIFE REstore | LIFE14 CCM/LV/001103
CO2 net ecosystem exchange
Peat e
xtra
ctio
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After e
xtra
ctio
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out v
eget
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After e
xtra
ctio
n, w
ith v
eget
ation
Perenni
al gra
ssla
nd
Cropla
nd –
cer
eals
Cropl
and –
legu
mes
Forest
– p
ine
Fores
t – b
irch
Raised b
og
Transit
iona
l bog
Bluebe
rries
Cranb
erries
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LIFE REstore IPCC
ton
s C
O-C
ha
¹ yr
¹₂
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LIFE REstore | LIFE14 CCM/LV/001103
LIFE Restore and IPCC CH4 emission factors
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Life REstore
kg C
H-C
ha
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¹₄
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LIFE REstore | LIFE14 CCM/LV/001103
N2O emissions in LULUCF sector
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IPCC 2014 LIFE REstore
NO
em
issi
ons,
₂
tons
CO
eq.
ha
¹ yr
¹₂
⁻⁻
LIFE REstore | LIFE14 CCM/LV/001103
The most efficient end use of extracted peatlands (removals in living
biomass not included)
CO2+CH4+N2O
LIFE REstore | LIFE14 CCM/LV/001103
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GHG emissions after implementation on LIFE REstore results
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G e
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sion
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tonn
es C
O2
eq.
Impact of implementation of LIFE REstore results on GHG emissions in
wetlands
LIFE REstore | LIFE14 CCM/LV/001103
Impact of LIFE REstore results on GHG emissions in LULUCF sector in
Latvia19
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IPCC 2014 LIFE REstore
GH
G e
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sion
s, k
tonn
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O2
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LIFE REstore | LIFE14 CCM/LV/001103
Conclusions
● Actual GHG emissions from the most of the land use categories are about twice less than the emission estimates according to IPCC 2014.
● The most efficient management strategies is afforestation, blueberry and cranberry production (where possible).
● GHG emission reduction due to rewetting may be considerably overestimated, however further studies are necessary to evaluate impact of groundwater level and site fertility.
● Next step is elaboration of GHG emission factors for nutrient-rich organic soils (LIFE OrgBalt project)
LIFE REstore | LIFE14 CCM/LV/001103
More information:
restore.daba.gov.lv
@LIFE_REstore
LIFE REstore
liferestorelv
LIFE REstore
Area not covered with vegetation
Area covered with herbs and dwarf shrubs
Perennial grassland on former peat extraction sites
Cropland on former peat extraction site
≥20 years old forest stand
Blueberry plantation on former peat extraction sites
Cranberry plantation on former peat extraction sites
-20 -15 -10 -5 0 5 10 15
GHG emission reduction, tons CO2 eq. ha-1 yr-1
GHG mitigation potential in 30 year period