Over the course of half a century, eastern Taipei, which has become known as the city's second center, turned into a concrete jungle. In comparison, in the years right before the Songshan Tobacco factory closed, its grounds were largely allowed to return to nature, and after it shut down there was even less human disturbance. The old plantings mixed with later arriving volunteers to create a biologically diverse ecology.
不過半個世紀，台北東區已然成為高度開發的水泥叢林，擁有台北副都心稱號；對比之下，松山菸廠在關廠前多年，就奢侈地放任草木滋長，直至工廠停止營運後，人為干擾壓力更少，舊有植栽加上後來自生的本土植物，形成了多樣化的生物棲地。