A simple way to map landuse

Step1: download landcover classification data

There are lots of good quality landcover products, likes GlobeLand30.

Step2: extract the area you are interested in

ArcToolBox -> Spactial Analyst Tools -> Extraction -> Extract by Mask

Step3: reclassify to reach the landuse

ArcToolBox -> Spactial Analyst Tools -> Reclass -> Reclassify

Step4: summarize area of same type

For a relative small area, the grid will be regarded as same cell size. In other words, every grid has same cell area. Then the sum of each type is the cell area multiplied by the count.

Select the target layer -> Open Attribute Table -> Add Field -> Set Name and Type as needed -> Right-click at the new field -> Field Calculator -> Tyep [Count] * 300 * 300 (300 is the cell side length)