Eight hundred were found which met the requirements of the survey, namely that they be at least 150cm in diameter at chest height (taken to be 1.3m) and be a hundred years old or over, or else have a peculiar shape or some other remarkable characteristic.
根據選拔條件：胸高（指離地一．三公尺處的樹幹）直徑一百五十公分以上，芳齡至少滿百歲，或樹形、樹勢奇特者，共八百多棵老樹入圍。