Agriculture and resource availability in a changing world: The role of irrigation

Sauer T, Havlik P, Schneider UA, Schmid E, Kindermann G, & Obersteiner M (2010). Agriculture and resource availability in a changing world: The role of irrigation. Water Resources Research 46: W06503. DOI:10.1029/2009WR007729.

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Abstract

Fertile land and freshwater constitute two of the most fundamental resources for food production. These resources are affected by environmental, political, economic, and technical developments. Regional impacts may transmit to the world through increased trade. With a global forest and agricultural model, we quantify the impacts of increased demand for food due to population growth and economic development on potential land and water use until 2030. In particular, we investigate producer adaptation regarding crop and irrigation choice, agricultural market adjustments, and changes in the values of land and water. In the context of resource sustainability and food security, this study accounts for the spatial and operational heterogeneity of irrigation management to globally assess agricultural land and water use. Agricultural responses to population and economic growth include considerable increases in irrigated area and water use but reductions in the average water intensity. Different irrigation systems are preferred under different exogenous biophysical and socioeconomic conditions. Negligence of these adaptations would bias the burden of development on land and water scarcity. Without technical progress, substantial price adjustments for land, water, and food would be required to equilibrate supply and demand.

Item Type: Article
Uncontrolled Keywords: Irrigation methods; Water use intensity; Agricultural adaptation; Partial equilibrium model; Food security; Land scarcity
Research Programs: Forestry (FOR)
Bibliographic Reference: Water Resources Research; 46(W06503) (8 June 2010)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:44
Last Modified: 08 Sep 2016 06:57
URI: http://pure.iiasa.ac.at/9297

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