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)


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.


1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

0

200

400

600

800

1 000

1 200

1 400

1 600

1 800

2 000

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


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.


Location of sampling sites


1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

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


Area reported under managed wetlands

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

0

10

20

30

40

50

60

47.6

47.3

47.0

46.7

46.4

46.1

45.8

45.5

45.1

44.8

44.5

44.2

43.9

43.6

43.3

43.0

42.7

42.3

42.0

41.7

41.4

41.1

40.8

40.5

40.2

39.9

39.5

Peat extraction field Rewetted areas Flooded areas

Are

a, k

ha


Example of land uses in extracted peatland


Management of peatlands and GHG emissions

CH4 CO2

DOC

CH4

CO2

DOC


Field sampling equipment


Data verification and quality control procedures

0

200

400

600

800

1000

1200

1400

1600

1800

f(x) = 1056,99 x + 522,21R² = 0,81

0

200

400

600

800

1000

1200

1400

f(x) = 766,33 x + 515,04R² = 0,99

CO

2, p

pm


Collection of litter samples in forest lands


CO2 soil fluxes

Soil erosion


Seasonal dynamics of CO2-C emissions


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

-160

-120

-80

-40

0

40

Cm


Groundwater level dynamics in the intact raised and transitional bogs


CO2 net ecosystem exchange

Peat e

xtra

ctio

n

After e

xtra

ctio

n, with

out v

eget

atio

n

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

-1

0

1

2

3

4

5

6

7

8

9

LIFE REstore IPCC

ton

s C

O-C

ha

¹ yr

¹₂

⁻⁻


LIFE Restore and IPCC CH4 emission factors

-30

0

30

60

90

120

150

Life REstore

kg C

H-C

ha

¹ yr

¹₄

⁻⁻


N2O emissions in LULUCF sector

-0.2

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

IPCC 2014 LIFE REstore

NO

em

issi

ons,

₂

tons

CO

eq.

ha

¹ yr

¹₂

⁻⁻


The most efficient end use of extracted peatlands (removals in living

biomass not included)

CO2+CH4+N2O


1990

1991

1993

1995

1997

1999

2001

2003

2005

2007

2009

2011

2013

2015

2017

0

200

400

600

800

1000

1200

1400

1600

1800

2000GHG emissions now

GHG emissions after implementation on LIFE REstore results

GH

G e

mis

sion

s, k

tonn

es C

O2

eq.

Impact of implementation of LIFE REstore results on GHG emissions in

wetlands


Impact of LIFE REstore results on GHG emissions in LULUCF sector in

Latvia19

90

1991

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

-20 000

-15 000

-10 000

-5 000

0

5 000

IPCC 2014 LIFE REstore

GH

G e

mis

sion

s, k

tonn

es C

O2

eq.


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)


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

Elaboration of country specific emission factors from ... · emission factors from organic soils in...

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