作者: M. J. HAYES , W. L. DECKER
DOI: 10.1080/01431169608949138
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摘要: Crop production assessments are extremely valuable because of their economic importance in influencing international trade and national policies. This study investigates using the Vegetation Condition Index derived from NOAA/AVHRR satellite data to estimate maize for United States Corn Belt. Satellite 1985 1992 utilized within a model explain more than 50 per cent variation normalized yields 42 Reporting Districts. Results estimating regional encouraging, operational estimates this would be available about two months prior harvest