I have no idea what this article says, but when I was being asked permission to use the photo it was explained like this –
“I am an expert and consultant for urban vegetation and currently I am writing an article with the topic “the value of (street) trees”. Not rocket science at all and the journal circulation is not too large (about 15.000 copies), but I see a chance to push the things here a little bit further. Since public relations work for trees is not very common in Europe, I want to present (among others) the concept behind those very popular “arbor days” that you do have in the U.S.”
My photo is on the top of page 40. This is the post where the photograph came from.