Structures et relations spatiales entre les images aériennes multi-spectrales, les propriétés du sol et les rendements de grandes cultures

• Published in: Canadian journal of remote sensing Vol. 29; no. 1; pp. 66 - 74
• Main Authors: Michaud, Aubert, Landry, Isabelle, Desmarais, Camille, Savoie, Charles
• Format: Journal Article
• Language: French; English
• Published: Taylor & Francis 01.01.2003
• ISSN: 0703-8992; 1712-7971
• DOI: 10.5589/m02-081

Aerial numerical images captured under critical soil conditions and crop stages are promising tools for crop and soil zone management if (1) images reflect the spatial structure of stable soil properties and crop yield potential and (2) spatial scales of variability of soil properties and crop yield potential are manageable. To asses the potential of numeric aerial images to support soil and crop zone management, spatial integration and geostatistical analysis in time and frequency domains of yield, topography, physico-chemical soil properties and aerial multi-spectral images, captured in spring and summer, have been supported for four fields from the Bois-Francs region, in Québec, and 2 years of production. Early summer images predicted monitored yield for experimental sites demonstrating significant spatial structure in crop productivity. Early spring images captured over harrowed soils and numerical elevation models revealed spatial structures of soil physico-chemical properties. Scales of spatial variability are generally compatible with soil and crop zone management.