You need to read the expression as "ritratto ambientato seicentesco" - it was a form of portrait painting popular in the 1600s, I suspect with great success in the Dutch arena. The portrait was painted in the artist's studio and was filled with objects making reference to the subject of the portrait.

I'd say "17th-century studio portraits"

17th Century Dutch Painting
Concept, Exhibition of 50 Dutch paintings of the 17th century from the Mauritshuis
... c. 1634-1635, Peter Paul Rubens and studio Portrait of a young woman ...
artconsulting.com/dutchpainting_e.html

Watford Museum: Cassiobury Collection: The Earls of Essex, their ...
... new generation portraits produced at the end of the 17th century, exemplified
in the ... Sir Thomas Lawrences's studio portrait of the 5th Earl of Essex ...
www.watfordmuseum.org.uk/cassiobury/history.html



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Note added at 55 mins (2005-08-02 15:50:22 GMT)
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More refs:

Behind the Story
She was of a line that could be traced back to the 1600s--old families, ...
The War Between the States that he wore it for the studio portrait and thereby, ...
k-eschenburg.com/BehindStory.htm

Combines conflict with landscape, travel, cycling, and portraits. ... a new
window - over 15000 Dutch studio portraits (Cartes de Visite) period 1860-1914 ...
ca.dir.yahoo.com/Arts/By_Region/ Countries/Netherlands/Complete_List/

Historic Inns of Calvert County
The main hall contains a portrait of Charles Calvert, seated, ... a Van Dyke studio portrait of Henrietta Maria, wife of Charles I, Maryland\'s namesake. ...
www.mdinns.com/inns/calvert.html

It was not until the late 1600s that concern over the number of wooden buildings
... Studio Portraits (2 images), c. 1886. John Athill Frith (1835-1907) ...
www.bermudanationalgallery.com/ docs/Bermuda%20Collection.pdf