Statewide potential crop yield losses from ozone exposure. Final report
Past efforts to model crop losses on a regional scale used plant losses at the county level. The work reported not only employs this traditional approach (important for long-term trend analysis), but also expands the methodological basis of the Crop Loss-Assessment Program by using GIS technology to estimate yield losses at the county level. The work reported not only employs this traditional approach (important for long-term trend analysis), but also expands the methodological basis of the Crop Loss Assessment Program by using GIS technology to estimate the yield loss based on interpolated 1/d(sup 2) ozone exposure indices. Analytical procedures used 7-hour and 12-hour seasonal mean models, and SUM 06 Wiebull functions for estimating the yield losses in several crops. Interpolated yield loss contours are graphically represented and enhanced by color-coded altitudinal ramping. Ozone concentratons on a monthly basis were interpolated within the state air basins using ARB air quality statistics and an imposed 2,000-ft altitudinal barrier to transport. Monthly 7-hour means, a widely used exposure index for plant response functions, were used for the statewide interpolations. The severity of potential yield loss was determined using ARB 1993 air quality data and published yield response functions.
- Research Organization:
- California Univ., Div. of Agriculture and Natural Resources, Davis, CA (United States); California State Air Resources Board, Research Div., Sacramento, CA (United States)
- Sponsoring Organization:
- California State Air Resources Board, Sacramento, CA (United States)
- OSTI ID:
- 658800
- Report Number(s):
- PB-98-164627/XAB; CNN: Contract ARB-94-345; TRN: 82541621
- Resource Relation:
- Other Information: DN: See also PB97-110894 and PB95-231387.; PBD: Mar 1998
- Country of Publication:
- United States
- Language:
- English
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