Greenhouse effect may not be all bad
Evidence is presented that indicates US temperatures decreased by a fraction of a degree during the past 70 years contrary to the estimates of some researchers concerned with the greenhouse effect. There is general agreement that the carbon dioxide concentrations in the atmosphere will double by the late or mid 21st century. Experiments on cotton growth under increased temperature and carbon dioxide concentrations indicate sizeable gains in yield. This increased yield is exhibited by citrus trees and is projected for other crops. There is a concomitant need for more water and fertilizer. Increased populations of parasitic mites and insects also occur. Climatic changes are seen as being more gradual than previously thought. The possible increases in food production under these changes in climate are one positive element in the emerging scenario.
- OSTI ID:
- 5151053
- Journal Information:
- Agricultural Research (Beltsville, MD); (United States), Vol. 38:10; ISSN 0002-161X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
29 ENERGY PLANNING
POLICY AND ECONOMY
01 COAL, LIGNITE, AND PEAT
CARBON DIOXIDE
BIOLOGICAL EFFECTS
CROPS
PLANT GROWTH
AGRICULTURE
BIOLOGICAL ADAPTATION
CLIMATIC CHANGE
GREENHOUSE EFFECT
PEST CONTROL
PHOTOSYNTHESIS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
GROWTH
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
SYNTHESIS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
290301 - Energy Planning & Policy- Environment
Health
& Safety- Regional & Global Environmental Aspects- (1992-)
010900 - Coal
Lignite
& Peat- Environmental Aspects