Sustainable land use for the 21st century
Transcript of Sustainable land use for the 21st century
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Sustainable land use for the 21st century
Ephraim Nkonya – IFPRI
Alain Karsenty – CIRAD
Siwa Msangi – IFPRI
Carlos Souza Jr - IMAZON
Mahendra Shah – IISA
Joachim von Braun – ZEF
Gillian Galford – Woods Hole Research Institute
SooJin Park – Seoul National University
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Outline
• Global trends of LUCC – forests & agriculture
• Case studies of LUCC: Brazil, Indonesia & DRC
• Prospects for the future
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Change of agriculture and forest area, 1992-2009
-8
-6
-4
-2
0
2
4
6
8
10
12
% c
han
ge
Agriculture Forest
About 80% of agricultural expansion in the tropics replaces forests
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Forest transitions
Perc
ent
of
fore
st C
ove
r
Years
* Countries/regions following traditional forest transition: EU, North America – 20th century * Countries/regions experiencing recovery due to institutional change China, India, Bangladesh * Market forces may prevent recovery: Indonesia, Brazil (prior to 2005)
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Global forest transition
Regions/countries Threshold - End of net deforestation
Main reason(s)
Europe End of 19th century Industrial revolution, Growing urban population, increasing environmental value
North America End of 19th century
China 1980’s PES, tree planting programs to head off flooding, dust storms, etc & effectiveness forest governance
India 1990’s National tree planting programs; community forest management; growing rural non-farm activities
Bangladesh 1990-2000 Social forestry, forest planting programs – poverty still entrenched
Niger 1990s? Tree tenure, increased rainfall, tree planting programs
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Sources of growth of food production, 1961-2005
Source: Bruinsma, 2009
Yield increase contributed about 77% of production But yield increase is decreasing in high income countries
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There is hardly room for agricultural expansion, so yield gap should be
closed – especially in LDCs
Source: Licker et al 2010
Current agric. area as % of global land area = 12% Approx. global safe boundary of ag area = 15% (Rockström et al. 2009)
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Decreasing global yield trend is due to narrow gap in high income countries
• Closing yield gap in LDC provides largest potential for achieving global sustainable Food security
• This requires addressing constraints to higher yields in LDCs
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How land use change happen in practice? Case of Brazil, Indonesia & DRC
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Brazil reduced deforestation by 74% in only five years
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Indonesia
• The palm industry - driving forces of deforestation (Grieg-Gran 2008).
• Commercial logging ~ 60% of Indonesia’s 100 million ha of forest allocated to commercial logging between 1970s to 2000 70 million m3 annual harvesting (sustainable level =25 million m3) (Casson 2001).
• Decentralization of forest management contributed to the deforestation
• Indonesia entered into contract with Norwegian to suspend all concessions. Deforestation rate fell from 1.7% in 1990-2000 - to only 0.5% in 2000-2010 (FAO 2011)
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DRC
• Poor infrastructure & insecurity has led to limited logging and other forms of forest harvesting in DRC
• CDM and other international instruments are hard to implement in DRC due to the weak institutions.
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DRC: Changes in area allocated to timber concessions
A B C D
Year 2000 2003 2007 2009
Area
(millio
n ha)
42 25 26 12
Source: Mertens and Bélanger, 2010
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Prospects for the future
• Food security is achievable but this will largely be done by closing the gap between crop yield potential and actual yield – especially in SSA, South Asia and central Asia. – This will require investments in multiple sectors to address agricultural
constraints.
• Strong environmental policies and institutions play key role in LUCC both in high and low income countries
• Recent international cooperation in environmental management has offered hope for addressing the environmental management challenges. But such efforts have been more effective in countries with efficient markets. In countries with weak markets & institutions, market based instruments have remained a challenge.
• Recent Rio +20 had little to say about REDD+, climate change, etc in its “The future we want”. This illustrates the challenges of reaching international agreements on sustainable LUCC