The phrase "land ice" refers to frozen water that is found on the land, such as in glaciers and ice sheets. It is different from sea ice, which is formed in the ocean. Full definition
Planning for a large sea level change, perhaps on the order of 1 meter in a century, requires reliable projections of the contributions from land ice. (eos.org)
Surely the issue relating to the mass of the ice sheet in the case of on - land ice sheets is precipitation as well as temperature. (realclimate.org)
A number of potential feedbacks, such as land ice cover, vegetation cover and ocean heat transport were held fixed in these experiments. (pubs.giss.nasa.gov)