Remote sensing and crop production models: present trends

Autor: Martine Guerif, Stephan J. Maas, R. Delecolle, Frédéric Baret
Přispěvatelé: Unité de bioclimatologie, Institut National de la Recherche Agronomique (INRA), ProdInra, Migration
Rok vydání: 1992
Předmět:
Zdroj: ISPRS Journal of Photogrammetry and Remote Sensing
ISPRS Journal of Photogrammetry and Remote Sensing, Elsevier, 1992, 47 (2-3), pp.145-161
5. International Colloquium
5. International Colloquium, Jan 1991, Courchevel 1850, France
ISSN: 0924-2716
DOI: 10.1016/0924-2716(92)90030-d
Popis: The use of remote sensing as a tool for estimating crop production on a regional scale has been suggested for quite a while. Since the use of remotely sensed information to directly estimate crop production is questionable (primarily due to the indirect link between remotely sensed data and crop state variables), crop models may be used as a companion tool to remote sensing. Various types of crop models (statistical, deterministic, semi-empirical) are described, and specific methods (forcing, recalibration, statistical correction) are described for introducing remotely sensed information into models. The appropriance of combining different model types and sources of remotely sensed information, problems related to time scales, and the need for robust and independent phenological routines are also discussed.
Databáze: OpenAIRE