The exploring research of a geometric optical canopy reflectance model (GOMS) for retrieving leaf area index directly

摘要

Forest canopy leaf area index (LAI) is an important biological parameter and an evaluation index of the vegetation canopy. It is difficult to get LAI through direct inversion using Li-Strahler geometric-optical model (GOMS)[1,2]. In this paper, LAI is introduced into the GOMS model as an independent variable to substitute other canopy structure parameters. The verification results well demonstrated the accuracy of the modified GOMS model.