Having spent three months living in an 83-meter-tall hardwood tree in Tasmania, Japanese environmental activist Sakyo Noda says he feels he has become "part of the forest."

Noda, a 26-year-old student of English from Tokyo, is campaigning against the logging of ancient forests for Japan's wood-chip market.

He arrived in Australia in June -- but never imagined he would join six other protesters from Australia, Germany and Canada in the "tree sit."

"I can't believe it even now," Noda told Kyodo News via satellite phone on Thursday, speaking from a 65-meter-high platform in a giant swamp gum in the Styx Forest.