the paradox of slash and burn agriculture

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Julie Morin-Rivat 1, 2. Adeline Fayolle1, Charly Favier3, Laurent Bremond4, Sylvie Gourlet-Fleury5,. Philippe Lejeune1, Hans Beeckman 2, Jean-Louis Doucet 1.
The end of roaming in the forest causes a loss of timber resources: the paradox of slash and burn agriculture Julie Morin-Rivat 1, 2 Adeline Fayolle 1, Charly Favier 3, Laurent Bremond 4, Sylvie Gourlet-Fleury 5, Philippe Lejeune 1, Hans Beeckman 2, Jean-Louis Doucet 1

1 University

of Liège, Gembloux Agro-Bio Tech, Belgium, 2 Royal Museum for Central Africa, Service

of Wood Biology, Belgium, 3 ISEM, UM2-CNRS, France, 4 CBAE, EPHE-CNRS, France, 5 CIRAD, France

GTÖ – Munich-Freising 25-28 February 2014

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Human-made fire?

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Natural fire?

© De Vleeschouwer

Human-made fire?

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© De Vleeschouwer

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© Gillet

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© Google

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© De Vleeschouwer

Human-made fire?

© Gillet

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© Gillet

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© Doucet

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© Gillet

© Google

© Doucet

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© Hurdebourcq

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© Hurdebourcq

22 sites 150,000 km²

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© Hurdebourcq

22 sites 150,000 km²

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© Hurdebourcq

22 sites 150,000 km²

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© Hurdebourcq

22 sites 150,000 km²

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○○○○●○○○○ Alstonia boonei

© Vincenti

© Doucet

○○○○●○○○○ Alstonia boonei

Erythrophleum suaveolens

© Doucet

© Vincenti

© Vandenhaute

© Doucet

© Gillet

○○○○●○○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

© Doucet

© Doucet

© Vincenti

© Vandenhaute

© Bourland

© Doucet

© Gillet

© Bourland

○○○○●○○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

© Doucet

© Doucet

© Vincenti

© Vandenhaute

© Bourland

© Doucet

© Gillet

© Bourland

Terminalia superba

© Morin-Rivat

© Schmidt

○○○○●○○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

© Doucet

© Doucet

© Vincenti

© Vandenhaute

© Bourland

© Doucet

© Gillet

© Bourland

Terminalia superba

© Morin-Rivat

Triplochiton scleroxylon

© Morin-Rivat

© Gillet

© Schmidt

© Gillet

○○○○●○○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

© Doucet

© Doucet

© Vincenti

© Vandenhaute

© Bourland

© Doucet

© Gillet

© Bourland

Terminalia superba

© Morin-Rivat

Triplochiton scleroxylon

© Morin-Rivat

© Gillet

© Schmidt

© Gillet

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○○○○○●○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

Terminalia superba

Triplochiton scleroxylon

○○○○○●○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

Terminalia superba

Triplochiton scleroxylon

○○○○○●○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

Terminalia superba

Triplochiton scleroxylon

○○○○○●○○○ Alstonia boonei

Erythrophleum suaveolens

Pericopsis elata

Terminalia superba

Triplochiton scleroxylon

○○○○○●○○○ Alstonia boonei

MIC = 0.4 cm/yr Mode = 150-175 yr ~ 160 yr old ~ AD 1850

Erythrophleum suaveolens

MIC = 0.4 cm/yr Mode = 150-175 yr ~ 160 yr old ~ AD 1850

Pericopsis elata

MIC = 0.4 cm/yr Mode = 125-200 yr ~ 160 yr old ~ AD 1850

Terminalia superba

MIC = 0.5 cm/yr Mode = 120-160 yr ~ 140 yr old ~ AD 1870

Triplochiton scleroxylon

MIC = 0.9 cm/yr Mode = 90-120 yr ~ 105 yr old ~ AD 1910

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The end of roaming in the forest causes a loss of timber resources: the paradox of slash and burn agriculture Julie Morin-Rivat, Adeline Fayolle, Charly Favier, Laurent Bremond, Sylvie Gourlet-Fleury, Philippe Lejeune, Hans Beeckman, Jean-Louis Doucet

CoForChange project (ERANet BiodivERsA – NERC/UK – ANR/Fr) www.coforchange.eu

Nature+ asbl. (Belgium)

Fund for Scientific Training in Industry and Agriculture (FRIA, F.R.S./FNRS, Belgium) and FRFC project (F.R.S./FNRS, Belgium) Dynamics of light-demanding tree species and grasses in the humid forests of Central Africa in relationship with past anthropogenic and climate disturbances

The forest companies

[email protected]

GTÖ – Munich-Freising 25-28 February 2014

Any questions?

GTÖ – Munich-Freising 25-28 February 2014