February 28, 2007
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Global Climate Change Digest
A Guide to Information on Greenhouse Gases and Ozone Depletion
Published July 1988 through June 1999
FROM VOLUME 6, NUMBER 6, JUNE 1993
CLIMATE CHANGE IMPACTS: AGRICULTURE
"Comparison of the Effects of Different Climate Change
Scenarios on Rangeland Livestock Production," J.D. Hanson
(USDA-ARS, POB E, Fort Collins CO 80522), B.B. Baker, R.M.
Bourdon, Agric. Systems, 41(4), 487-502, 1993.
An existing rangeland ecosystem model was modified and a
cow/calf production system simulated under different climate
scenarios predicted by GCMs. The effect of climate change on
livestock production is very complex and results depend on the
particular GCM scenario simulated.
from Clim. Change, 23(1), Jan. 1993:
"Farm Programs and Climate Change," J.K.
Lewandrowski (Econ. Res. Serv., USDA, 1301 New York Ave. NW,
Washington DC 20005), R.J. Brazee, 1-20. Outlines a simple
portfolio model describing producer decision making, and uses
this framework to assess how specific U.S. federal farm programs
might affect adaptation to climate change under three climate
scenarios. In each scenario the present structure of farm
programs discourages adaptation.
"The Potential Effects of Climate Change on Summer Season
Dairy Cattle Milk Production and Reproduction," P.L.
Klinedinst (Dept. Agric. Meteor., Univ. Nebraska, Lincoln NE
68583), D.A. Wilhite et al., 21-36. Application of existing
algorithms to climate scenarios from three GCMs shows milk
production declines of up to 20% in the southeastern and
southwestern U.S., and declines of up to 35% in the eastern and
Dust Bowl of the 1930s: Analog of the Greenhouse Effect in the
Great Plains?," C. Rozenweig (NASA Goddard Inst. Space
Studies, 2880 Broadway, New York NY 10025), D. Hillel, J.
Environ. Qual., 22(1), 9-22, Jan.-Mar. 1993.
Uses statistical methods, crop growth models and GCM climate
scenarios to conclude that the Dust Bowl experience of the 1930s
may be considered a preliminary analog of possible future climate
conditions for the southern Great Plains, with the important
difference that the higher projections of warming produce more
severe consequences than did the Dust Bowl.
Drought of 1988, the Global Warming Experiment, and its Challenge
to Irrigation in the Old Dust Bowl Region," J. Opie (Ctr.
Technol. Studies, New Jersey Inst. Technol., Newark, N.J.), Agric.
History, 66(2), 279-306, Spr. 1992.
One of a collection of articles derived from a conference, History
of Agriculture and the Environment, held June 1991 in
Washington. Examines the future vulnerability of the Ogallala
aquifer in the U.S. plains states, which helps provide food for
all the world but is being used up at 10 times the replacement
"Temperature Effects on Rice at Elevated CO2
Concentration," J.T. Baker (Agron. Dept., Univ. Florida,
Gainesville FL 32611), L.H. Allen Jr., K.J. Boote, J. Exper.
Bot., 43(252), 959-964, July 1992.
Experiments in outdoor, sunlit, ambient chambers show that
while future increases in atmospheric CO2 are likely
to be beneficial to rice growth and yield, potentially large
negative effects on yield are possible if air temperatures also
from World Resour. Rev., 4(4), 1992:
"Alleviation of Global Climate Change Impact via
Simulation-Based Decision Support Systems in Agriculture,"
J.M. McKinion (USDA-ARS, POB 5367, Mississippi State MS 39762),
406-418. Examines the use of crop models, geographic information
systems and other techniques in combination with GCM simulations
for predicting climate impacts as a basis for policy decisions.
"The Impact of Weather and Climate Change on Wheat Yields
in the United States," T.A. Barry (Dept. Agron., Univ.
California, Davis CA 95616), S. Geng, 419-450. Combines GCM
output with a dynamic weather simulation model and a crop model
to evaluate impacts on crop production. Results show that wheat
yield variation is greatly intensified by weather variation, to a
greater extent than shown in previous studies.
"Cotton Crop Response to Global Climate Change," K.R.
Reddy (Dept. Agron., Mississippi State Univ., Mississippi State
MS 39762), H.F. Hodges, J.M. McKinion, ibid., 4(3),
Experiments in sunlit temperature- and CO2-controlled
chambers examined in detail how elevated CO2 levels
result in higher cotton yields, if temperature is optimum.
Cultivars or species tolerant to high temperatures will be highly
desirable in the future.
Impact of Climate Change on Rice Variety Selection in
Thailand," S. Panturat (Dept. Math., Srinakarinwirot Univ.,
Bankok 10110, Thailand), A. Eddy, J. Sci. Soc. Thailand, 17(1-2),
3-30, Mar.-June 1991.
Applies a rice growth model to climate change scenarios.
Recommends a national policy that would direct rice breeders to
consider possible climate change, and cooperative efforts between
the agricultural extension services and farmers which would
highlight the interactive effects of variety selection, climate
change and cultural practice.
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