Abstract
Two possible adaptation scenarios to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles the irrigated area in Sub-Saharan Africa by 2050, compared to the baseline, but keeps total crop area constant. The second scenario increases both rainfed and irrigated crop yields by 25% for all Sub-Saharan African countries. The two adaptation scenarios are analyzed with IMPACT, a partial equilibrium agricultural sector model combined with a water simulation module, and with GTAP-W, a general equilibrium model including water resources. The methodology combines the advantages of a partial equilibrium approach, which considers detailed water-agriculture linkages, with a general equilibrium approach, which takes into account linkages between agriculture and nonagricultural sectors and includes a full treatment of factor markets. The efficacy of the two scenarios as adaptation measures to cope with climate change is discussed. Due to the limited initial irrigated area in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated area. Even though Sub-Saharan Africa is not a key contributor to global food production (rainfed, irrigated or total), both scenarios help lower world food prices, stimulating national and international food markets.
| Language | English |
|---|---|
| Pages | 150-165 |
| Number of pages | 16 |
| Journal | Ecological Economics |
| Volume | 93 |
| DOIs | |
| Publication status | Published - 2013 |
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Keywords
- Agriculture
- Climate change
- Computable general equilibrium
- Sub-Saharan Africa
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Economywide impacts of climate change on agriculture in Sub-Saharan Africa. / Calzadilla, Alvaro; Zhu, Tingju; Rehdanz, Katrin; Tol, Richard S J; Ringler, Claudia.
In: Ecological Economics, Vol. 93, 2013, p. 150-165.Research output: Contribution to Journal › Article › Academic › peer-review
TY - JOUR
T1 - Economywide impacts of climate change on agriculture in Sub-Saharan Africa
AU - Calzadilla, Alvaro
AU - Zhu, Tingju
AU - Rehdanz, Katrin
AU - Tol, Richard S J
AU - Ringler, Claudia
PY - 2013
Y1 - 2013
N2 - Two possible adaptation scenarios to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles the irrigated area in Sub-Saharan Africa by 2050, compared to the baseline, but keeps total crop area constant. The second scenario increases both rainfed and irrigated crop yields by 25% for all Sub-Saharan African countries. The two adaptation scenarios are analyzed with IMPACT, a partial equilibrium agricultural sector model combined with a water simulation module, and with GTAP-W, a general equilibrium model including water resources. The methodology combines the advantages of a partial equilibrium approach, which considers detailed water-agriculture linkages, with a general equilibrium approach, which takes into account linkages between agriculture and nonagricultural sectors and includes a full treatment of factor markets. The efficacy of the two scenarios as adaptation measures to cope with climate change is discussed. Due to the limited initial irrigated area in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated area. Even though Sub-Saharan Africa is not a key contributor to global food production (rainfed, irrigated or total), both scenarios help lower world food prices, stimulating national and international food markets.
AB - Two possible adaptation scenarios to climate change for Sub-Saharan Africa are analyzed under the SRES B2 scenario. The first scenario doubles the irrigated area in Sub-Saharan Africa by 2050, compared to the baseline, but keeps total crop area constant. The second scenario increases both rainfed and irrigated crop yields by 25% for all Sub-Saharan African countries. The two adaptation scenarios are analyzed with IMPACT, a partial equilibrium agricultural sector model combined with a water simulation module, and with GTAP-W, a general equilibrium model including water resources. The methodology combines the advantages of a partial equilibrium approach, which considers detailed water-agriculture linkages, with a general equilibrium approach, which takes into account linkages between agriculture and nonagricultural sectors and includes a full treatment of factor markets. The efficacy of the two scenarios as adaptation measures to cope with climate change is discussed. Due to the limited initial irrigated area in the region, an increase in agricultural productivity achieves better outcomes than an expansion of irrigated area. Even though Sub-Saharan Africa is not a key contributor to global food production (rainfed, irrigated or total), both scenarios help lower world food prices, stimulating national and international food markets.
KW - Agriculture
KW - Climate change
KW - Computable general equilibrium
KW - Sub-Saharan Africa
UR - http://www.scopus.com/inward/record.url?scp=84879566637&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84879566637&partnerID=8YFLogxK
U2 - 10.1016/j.ecolecon.2013.05.006
DO - 10.1016/j.ecolecon.2013.05.006
M3 - Article
VL - 93
SP - 150
EP - 165
JO - Ecological Economics
T2 - Ecological Economics
JF - Ecological Economics
SN - 0921-8009
ER -