I am trying to clip a Corine land cover shapefile to a 3km buffer zone so I can get the land use types + hectare amounts of that 3km radius. Firstly, it fails to clip the pastures attribute to the buffer (invalid geometry). And then other layers which do clip but fall both in and outside the 3km radius show the entire hectare amount for that land use, in and outside the buffer and not just the area that has been clipped.
I was wondering is it possible to do what I am asking or am I doing something wrong? The crs is the same for both the map and corine shape file.