"Vegetation cover" refers to the amount and extent of plants and trees present in a particular area. It describes the overall amount and distribution of greenery and plant life in a given location. Full definition
For us the key implication of our theory is the major importance of vegetation cover in sustaining regional climates. (judithcurry.com)
Global vegetation cover changes from coarse resolution satellite data. (cires.colorado.edu)
How much movement occurs depends on a number of factors including wind strength, the amount of vegetation cover and moisture levels. (scientificamerican.com)