섬유

use of multi-temporal ndvi measurements from avhrr data for crop yield estimation and prediction

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 267
this paper investigates the potential of using vegetation index profiles from avhrr data to monitor crop yield. a retrospective study and predictive study is presented, for 1986-1988 and 1989 respectively, for an area in northern greece. results are encouraging for operational crop monitoring. yield for wheat, cotton, rice and maize crops has been estimated to a high degree of accuracy using a simple linear relationship between ndvi and yield. however input from an agro-meteorological model is recommended to modify the model during the grain-filling period of the wheat crop. the estimates stabilize 50-100 days prior to harvest enabling an early assessment of crop yield to be made. (author abstract) 15 refs
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