noun
Refers to the surface area of land, typically for countries, continents, or regions. Often used in geographic or statistical contexts.
日本の陸地面積は約37.8万平方キロメートルです。
Japan's land area is about 378,000 square kilometers.
面積 is a general term for 'area' (of any surface), while 陸地面積 specifically means 'land area' as opposed to water area.
Compound of 陸地 (rikuchi, 'land') + 面積 (menseki, 'area').