Similarly, MODIS NDVI image was generated and the tea garden patches were masked out. Using the masked NDVI image, the NDVI values were extracted from the tea masked area using 3 x 3 kernel for extracting the pixels. The average of the actual LAI and NDVI values were calculated and the linear regression analysis was carried out using the LAI and NDVI values. The LAI – NDVI values were plotted and linearly regressed. From the analysis it is observed that there exist a linear relationship between LAI and MODIS based NDVI. The relationship was quite weak but yet significant with moderate R2=0.40 value. Thus it could be inferred that MODIS derived NDVI can approximately provide information on leaf area index for tea. The relationship is shown below.  Figure 62: LAI-NDVI Relationship |