抄録
Texture observed in images of canopy from close distance is expected as the significant source of information which represents the recent status of growth plants, and it has the advantage of easiness of analysis of its characteristics. We evaluated the applicability of PSM at various growth stages through the estimation of the species composition in the pasture field mixed with orchard grass and white clover and the plane heterogeneity of growth in the pasture fields of each species. The coefficient of correlation between textural features and the species composition exceeded 70% at the elder growth stages in which vegetation ratio exceeded 60%, while textural features could not show significant correlation at the younger growth stages. Further, the textural feature which corresponds to the shortest spacial wavelength showed the significant correlation with the plane heterogeneity despite the growth stage.
