The word landscape is very rich in meanings, and probably due to its origins is full of different senses. In other languages we may find different meanings, and again it evokes origins that are distant in time.
What we bring up today is the ‘academic’ definitions of the English term.
Extracted from the Oxford English Dictionary these are the definitions proposed:
1. a. A picture representing natural inland scenery, as distinguished from a sea picture, a portrait, etc.1603 SYLVESTER Du Bartas I. vii. 13 The cunning Painter..Limning a Land-scape, various, rich, and rare. 1605 B. JONSON Masque Blackness Wks. (1616) 893 First, for the Scene, was drawne a Landtschap, consisting of small woods. 16.. A. GIBSON L’Envoy in Guillim’s Heraldry (1660), As in a curious Lant-schape, oft we see Nature, so follow’d, as we think it’s she. 1683 DRYDEN Life Plutarch Ded. 18 Let this part of the landschape be cast into shadows that the heightnings of the other may appear more beautiful. 1821 CRAIG Lect. Drawing v. 271 If..you paint your landscapes in oil-colours. 1841-4 EMERSON Ess., Art Wks. (Bohn) I. 145 In landscapes, the painter should give the suggestion of a fairer creation than we know. 1899 L. CUST in Nat. Gallery Brit. Art 8 The landscapes exhibited on this occasion by Constable.b. spec. The background of scenery in a portrait or figure-painting. Obs.c. As adj. =OBLONG a. 1c. Also as adv.
5. attrib. and Comb., as landscape art, book-plate, draughtsman, -lover, -work; landscape architect, a practitioner of landscape architecture; landscape architecture, the planning of parks or gardens to form an attractive landscape, often in association with the design of buildings, roads, etc.; landscape-gardening, the art of laying out grounds so as to produce the effect of natural scenery; so landscape-garden, (also as vb.) -gardener; landscape lens, a lens used in photographing landscape; landscape marble, a variety of marble which shows dendritic markings resembling shrubbery or trees; landscape mirror, = CLAUDE LORRAINE GLASS (Cent. Dict.); landscape-painter, one who paints landscapes, a landscapist; so landscape-painting; landscape-worker, a landscapist.
We can discuss (if you want) the reasons for the name and why view and land are privileged in the definitions. However, it is interesting to note that ‘picture’ is a word that comes up frequently when talking about the landscape. Diverse authors have talked about our representation of the world as a picture (e.g. Merleau-Ponty) but it depends on our personal definition the fact of seeing the landscape as something holistic (as we can see in the definitions) or restrict our ‘view’ like in a picture.
What is landscape? Good point to start with.