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Global Climate Change Digest

A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999



Item #d92aug30

"A Method for Estimating the Direct and Climatic Effects of Rising Atmospheric Carbon Dioxide on Growth and Yield of Crops," Agric. Systems, 38(3), 1992.

"1. Modification of the EPIC Model for Climate Change Analysis," C.O. Stockle (Dept. Agric. Eng., Washington State Univ., Pullman WA 99164), J.R. Williams et al., 225-238. EPIC, a comprehensive cropping system model, was modified to account for the effects of change in CO2 concentration and water vapor deficit on the radiation use efficiency, leaf resistance and transpiration of crops.

"2. Sensitivity Analysis at Three Sites in the Midwestern USA," C.O. Stockle, P.T. Dyke et al., 239-256. Applies the model to maize, soybean and wheat.

Item #d92aug31

"Sustainability of the Great Plains in an Uncertain Climate," W.E. Riebsame (Dept. Geog., Univ. Colorado, Boulder CO 80309), Great Plains Res., 1(1), 133-151, 1991.

Examines the potential for social adaptation to climate change on the Great Plains, and offers a framework for sharpening the inquiry into regional agricultural sustainability. A key characteristic is whether the system is fundamentally adaptable, or resilient (likely to attempt to maintain "normal" operations in future droughts). Adaptive strategies are likely to yield less social dislocation, but debate over the sustainability of Plains agriculture even in the absence of climate change shows the need for collaborative examination of regional development trends by Plains researchers.

Item #d92aug32

"Farmer Response to Changes in Climate--The Case of Corn Production," L.R. Hansen (Div. Resour. Technol., U.S. Econ. Res. Serv., Washington DC 20250), J. Agric. Econ. Res., 43(4), 18-25, Fall 1991.

Considers whether minor production adaptations to climate significantly affect corn yields. When both adaptations to climate and the direct effect of weather are included, a 6.4° F change in temperature raised yields by 44% in areas with average July temperatures of 67° F, and reduced yields by 70% in areas with average July temperatures of 76.5° F.

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