The report classifies forest cover into three categories on the basis of their density measured in terms of canopy cover – the percentage of green cover on land as seen from satellite images. Dense forests are those where the canopy cover is 70% or more, moderately dense forests where the canopy cover is between 70% and 40%, and open forests where the canopy cover is between 40% and 10%. The remaining land is either classified as scrub land – forests that have degraded to less than 10% canopy cover – or non-forest lands, which do not have green cover at all.