More particularly, "Different varieties from different climatic zones have been placed together here as experiments. Sometimes 20 or 30 different species can be found in the same place," explains Lin Shun-chong, director of Huisun Forest. He concludes, "This is the greatest difference between here and Chitou."
更特別的是，「為了方便實驗，同一地點常有不同氣候帶、不同種類的樹木，往往在一個地方可看到二、三十種樹」，惠蓀實驗林場場長林順中說：「這也是惠蓀和溪頭最顯著的不同處。」