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Information Resilience·2026·ongoing

Taipei street tree removal map

Comparing two official Taipei street tree inventories (Nov 2024 and Jul 2026) and mapping the trees that disappeared from the list, and the ones that were added.

GISOpen Data
Why

Removed trees can't be found in the open data.

The Taipei city government publishes a street tree distribution dataset on data.taipei, but it only records the trees standing now.

Once a tree is removed, it drops off the inventory, and the open data keeps no record of where it was or when it disappeared.

If you want to know which street or district lost trees, there is no ready-made data to look it up.

How

Compare the inventory at two points in time.

  • Downloaded the official Taipei street tree inventory from data.taipei at two points in time: 2024-11-21 (95,498 trees) and 2026-07-09 (92,043 trees).
  • Matched every tree by its TreeID: in the old list but not the new one counts as "disappeared"; in the new list but not the old one counts as "added".
  • Converted the TWD97 coordinates to WGS84 and drew an interactive Leaflet map. Disappeared, added and still-standing trees are three separate layers, and clicking any tree shows its district, road section, species and TreeID.
  • Counted disappeared and added trees by district.
  • Wrote the data limits directly on the map: "disappeared" only means the TreeID is not in the new inventory — it can be a deliberate removal, a tree lost to a storm, or re-registration. "Added" does not always mean replanted either.
What

A map that shows where the trees went missing.

  • The map is public, no login needed.
  • Between 2024-11 and 2026-07: 7,483 trees disappeared from the inventory, 4,028 were added, a net loss of 3,455.
  • Of the 12 districts, Xinyi (-1,045) and Da'an (-887) lost the most; Beitou is the only district with a net gain (+807).
  • For comparison, city statistics made public by a Taipei city councillor in July 2026: 1,425 trees removed in 2024; 2,691 removed in 2025, plus 473 lost to natural disasters, 3,164 in total, with 778 replanted (24.6%).

Comparing inventories shows which trees are gone, but not why, and it can't show topping cuts either. That part needs other data.

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