Wheat is by far the most important stable crop in Central Asia.
An approximate 8.5 Million ha are under wheat in Kazakhstan
alone. The Kazak wheat production amounted to 17.1 Mt in 2009
which represents about 2.5% of world total production. The four
other Central Asia countries add another 11.5 Mt of wheat annually
(FAOSTAT, 2011). Yet, surprisingly little is known about the
impact of CC on wheat growth and productivity in Central Asia. Such assessments are often pursued using biophysical simulation tools,such as crop models. White et al. (2011) screened related literatureof the past decades and identified 221 peer-reviewed papers thatused crop simulation models to examine diverse aspects of how cli-mate change might affect agricultural systems. They could not finda single related paper considering at least one of the five CentralAsian countries. Likewise, the reviews of Lioubimtseva and Henebry(2009) and Singh et al. (2011) did not consider studies that dealtwith the impact of climate change by means of biophysical (crop)models. Some limited information about the impact of CC on wheatproduction in Central Asia can be deducted from studies that coverthe entire globe. Arnell et al. (2002) studied the consequences ofthree different climate change scenarios – unconstrained CO2emis-sion, stabilization at 750 ppm by 2230, and at 550 ppm by 2170 –on various ecological and economic aspects at global scale. Amongothers, they used a “suite of dynamic crop growth models” (with-out detailing further) to simulate the effects of climate change andincreasing CO2concentrations on the potential yield of major cerealcrops. CO2levels according to their unconstrained emission sce-nario would reach around 700 ppm by the year 2100, i.e. similar tothe IPCC SRES A1B (IPCC, 2007). In response, estimated changes innational potential long-term mean grain yield by the 2080s werepredicted to be in the range of −2.5% to 0% for the whole of CentralAsia.
Wheat is by far the most important stable crop in Central Asia.
An approximate 8.5 Million ha are under wheat in Kazakhstan
alone. The Kazak wheat production amounted to 17.1 Mt in 2009
which represents about 2.5% of world total production. The four
other Central Asia countries add another 11.5 Mt of wheat annually
(FAOSTAT, 2011). Yet, surprisingly little is known about the
impact of CC on wheat growth and productivity in Central Asia. Such assessments are often pursued using biophysical simulation tools,such as crop models. White et al. (2011) screened related literatureof the past decades and identified 221 peer-reviewed papers thatused crop simulation models to examine diverse aspects of how cli-mate change might affect agricultural systems. They could not finda single related paper considering at least one of the five CentralAsian countries. Likewise, the reviews of Lioubimtseva and Henebry(2009) and Singh et al. (2011) did not consider studies that dealtwith the impact of climate change by means of biophysical (crop)models. Some limited information about the impact of CC on wheatproduction in Central Asia can be deducted from studies that coverthe entire globe. Arnell et al. (2002) studied the consequences ofthree different climate change scenarios – unconstrained CO2emis-sion, stabilization at 750 ppm by 2230, and at 550 ppm by 2170 –on various ecological and economic aspects at global scale. Amongothers, they used a “suite of dynamic crop growth models” (with-out detailing further) to simulate the effects of climate change andincreasing CO2concentrations on the potential yield of major cerealcrops. CO2levels according to their unconstrained emission sce-nario would reach around 700 ppm by the year 2100, i.e. similar tothe IPCC SRES A1B (IPCC, 2007). In response, estimated changes innational potential long-term mean grain yield by the 2080s werepredicted to be in the range of −2.5% to 0% for the whole of CentralAsia.
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