This seems a bit of a leap from the results of a simple survey - the artists themselves have, after all, designed the resulting paintings. I've reproduced below (hope this is OK) the image Melamid and Komar came up with for the USA and one of their charts showing responses by Americans to the questions about their preferences for 'outdoor scenes'. It's good fun, but it would be interesting to test aesthetic preferences out a bit more scientifically (focusing just on landscape). You could have more categories of 'outdoor scene' or landscape feature and a range of fuller descriptions. You could also look at the results overall and then control for particular characteristics of the respondents, e.g. whether they live in a city, in suburbia or somewhere amid lakes and mountains.
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I was reminded of the Melamid and Komar experiment while looking round the opening exhibition at Eastbourne's newly relocated Towner Gallery, The People's Choice. To celebrate the gallery's relaunch, people were asked to vote on their favourite works from a selection of 200 in the permanent collection, with the winners being displayed. Landscape is 'one of the collection's gretest strengths' and the winner in the landscapes category was Charles Knight's Ditchling Beacon (c1930s), a Cotman-like painting of a local landmark, bringing out in soft sunlight the planes and curves of the South Downs. The Towner has a large collection of Eric Ravilious paintings and I wouldn't disagree with the popular vote for Cuckmere Haven (1939), another famous Sussex view where the natural forms seem well suited to the 1930s modernist style.
Melamid and Komar haven't included the UK in their 'People's Choice' project. However, Radio Four found that Britain's greatest painting (as voted for by their listeners) is Turner's The Fighting Temeraire. It is not a pure landscape, but a work in which the sun setting on the sea is just as much the subject as the old ship being tugged to its berth.