1001 Smart Cities

Permanent project revision

Urban Forest Visual & Email-a-Tree

Revision 2026-10-11-deep-run · effective 2026-10-11

Superseded. A later revision exists: 2026-10-13-editorial-decisions →

unreviewed

Deep Run 2026-10-11: every source re-read and dated, present-tense statements dated, claim array completed; impact: No source dates the survey to 2012–13; AIPH ties it to the development of the 2012 strategy.; impact: Biophilic Cities says nothing about replies. The only source (ArchitectureAU, 2015) says the team 'occasionally' responds; 'reply in each tree's voice' overstated and set it in the present.; teaser: Same overstatement as in the impact.; lesson: No source states the cost of the email feature or of running the inbox.; sources: 1 May 2025 is a notice on the live map ('will be fully functional from 1 May 2025'), not a publication date; the tool is continuously updated.; sources: 12 Decembe

sha256:f674f649046e63e7dccd8e3bc4b3007d018c51a83299afabb62f1d2d8b075727
All revisions → Current entity page →

Change set

  • replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.
  • replace /snapshot/asOf — Updated asOf to the current sourced project record.
  • replace /snapshot/projectState — Updated projectState to the current sourced project record.
  • replace /snapshot/claims — Updated claims to the current sourced project record.
  • replace /snapshot/sources — Updated sources to the current sourced project record.
14
of 14 claims mapped
8
source dossiers
3
publication dates recorded
1
archives linked
0
exact locators
0
content captures hashed

Claims, one by one

The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.

Claim 1 clm-b92bc0525e49c8e0 quantitative
Melbourne mapped all 70,000+ street trees with individual IDs, species and health data in its Urban Forest Visual
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: "the City of Melbourne's 70,000 street trees were surveyed and mapped", with species, size and condition, published in the Urban Forest Visual with an ID for each tree. The map itself says the City maintains more than 70,000 trees.
Caveat
70,000 is the count at the time of the survey; by 2025 the city counts more than 80,000 trees in the municipality.

Sources carrying this claim

  1. AIPH — Melbourne urban forestry (industry association case study)
  2. Urban Forest Visual (project tool)
Claim 2 clm-50738e2af84821dc descriptive
citizens started emailing love letters to their favourite trees instead of just fault reports
Published field
snippet · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ABC News: "Melbourne gave 70,000 trees email addresses so people could report on their condition. But instead people are writing love letters". Biophilic Cities describes the reporting purpose and the affectionate emails that followed.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ABC News — People from all over the world are sending emails to Melbourne's trees
  2. Biophilic Cities (research)
Claim 3 clm-d6e2969ed22c23b7 quantitative
The tree survey made for the 2012 Urban Forest Strategy recorded all of the City of Melbourne's roughly 70,000 street trees — species, size, condition and an estimate of each tree's useful life — and published them as the public Urban Forest Visual map
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: "As part of the development of the strategy, the City of Melbourne's 70,000 street trees were surveyed and mapped. The survey looked at species, size and condition to assess the useful life expectancy of each tree. All findings from this work were made available in an online map called the Urban Forest Visual". The map shows useful life expectancy per tree.
Caveat
The sources tie the survey to the strategy's development but give no year for the survey itself.

Sources carrying this claim

  1. AIPH — Melbourne urban forestry (industry association case study)
  2. Urban Forest Visual (project tool)
Claim 4 clm-8ba71ebc6559717c quantitative
the Urban Forest Strategy's goal of doubling public-realm canopy cover from a 22% baseline to 40% by 2040
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: the strategy "aims to double City of Melbourne's public realm canopy cover from its baseline level at 22% to 40% by 2040". The 2025–35 precinct plan restates the target: "Increase canopy cover; achieve 40% by 2040".
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. AIPH — Melbourne urban forestry (industry association case study)
  2. City of Melbourne — Central City Urban Forest Precinct Plan 2025–35
Claim 5 clm-2de397f942a9f982 quantitative
which the city's own modelling says needs at least 3,000 new trees planted every year
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: "The modelling showed that reaching the 40% canopy cover target would require planting at least 3,000 trees a year until 2040."
Caveat
A planting requirement, not a record of trees actually planted.

Sources carrying this claim

  1. AIPH — Melbourne urban forestry (industry association case study)
Claim 6 clm-6d317418cc11413e descriptive
Giving every tree an ID also meant giving it an email address for fault reports
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: "each tree assigned an identification number and email address to facilitate tracking and reporting". ABC News quotes councillor Cathy Oke: the facility "was literally set up so that people could report issues about a particular tree".
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ABC News — People from all over the world are sending emails to Melbourne's trees
  2. AIPH — Melbourne urban forestry (industry association case study)
Claim 7 clm-276d956188e19a6c descriptive
thousands of residents — and writers from beyond Australia — sent the trees messages of thanks, apology and affection
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
Biophilic Cities: "As of 2024, thousands of emails from across and beyond Australia"; its examples range from an apology for a dog to declarations of affection. ABC News prints emails from New York and Colorado. The peer-reviewed study by Phillips, Straughan and Atchison analyses the emails as gratitude to trees.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. Biophilic Cities (research)
  2. ABC News — People from all over the world are sending emails to Melbourne's trees
  3. Phillips, Straughan & Atchison 2023, Social & Cultural Geography — Gratitude for and to nature: insights from emails to urban trees
Claim 8 clm-e9b5db1f19d6149d descriptive
the council's Urban Forest team occasionally replied in the tree's voice
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ArchitectureAU: "The emails are monitored by the City of Melbourne's Urban Forest team, who occasionally respond to writers impersonating the trees."
Caveat
Reported in 2015; no later source says whether replies continue.

Sources carrying this claim

  1. ArchitectureAU — An arboreal affair: Melbourne's love letters to trees
Claim 9 clm-00573cfffdad8281 quantitative
By December 2018 the trees had received more than 4,000 emails from around the world (ABC News).
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ABC News (12 December 2018): "Since the project started it's received more than 4,000 emails from around the world."
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ABC News — People from all over the world are sending emails to Melbourne's trees
Claim 10 clm-c851ea1522811b3f quantitative
The city's 2025–35 precinct plans count more than 80,000 trees in the municipality and show canopy cover of 25.22% for the City of Melbourne, against the 40% target for 2040.
Published field
impact · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The Central City Urban Forest Precinct Plan 2025–35: "Since 2012 our trees numbers have risen to over 80,000 in the municipality"; its precinct map labels "The City of Melbourne 25.22% canopy"; the targets list "Increase canopy cover; achieve 40% by 2040".
Caveat
The plan does not say whether 25.22% measures the public realm, like the 22% baseline, or the whole municipality, nor in which year it was measured; the two figures should not be read as a measured gain.

Sources carrying this claim

  1. City of Melbourne — Central City Urban Forest Precinct Plan 2025–35
Claim 11 clm-c08fdf0514b9520c descriptive
Melbourne set out to build an arborists' database and accidentally built a public relationship with the canopy.
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ABC News quotes the council: the email facility was set up for issue reports, and "That quickly turned into something quite unexpected when people were using this to send fan mail and love letters". AIPH describes the inventory as a management tool that "attracted unexpected" attention.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ABC News — People from all over the world are sending emails to Melbourne's trees
  2. AIPH — Melbourne urban forestry (industry association case study)
Claim 12 clm-2d88b5151c52824b descriptive
a tree-by-tree inventory driving a planting programme toward a dated canopy target
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
AIPH: the survey database was used to model canopy under different scenarios and set the planting rate for the 40% by 2040 target; the precinct plans direct street planting to achieve the strategy's objectives.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. AIPH — Melbourne urban forestry (industry association case study)
  2. City of Melbourne — Central City Urban Forest Precinct Plan 2025–35
Claim 13 clm-726c0d0699c6b919 descriptive
the 'email-a-tree' turn, which is well documented but is engagement, not a proven climate outcome
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
ABC News, Biophilic Cities and the peer-reviewed email study document the phenomenon; Biophilic Cities adds that "more research is necessary to determine if efforts have led to fewer instances of mature tree loss". None of the sources measures a canopy or climate effect from the emails.
Caveat
No claim-specific caveat recorded

Sources carrying this claim

  1. ABC News — People from all over the world are sending emails to Melbourne's trees
  2. Biophilic Cities (research)
  3. Phillips, Straughan & Atchison 2023, Social & Cultural Geography — Gratitude for and to nature: insights from emails to urban trees
Claim 14 clm-fca6429f22d5edb2 descriptive
publishing per-asset data with a way for people to talk back can turn a maintenance system into civic attachment
Published field
lesson · verbatim
Mapping
mapped · no interpretation or interpolation added by this file
What the mapping says
The map publishes every tree's data with an "Email this tree" link; the peer-reviewed study reads the emails as attachment and gratitude to the trees; ABC quotes the council that technology here helped people engage with nature.
Caveat
The transferable point is an editorial reading of the case, not a finding any source tests.

Sources carrying this claim

  1. Urban Forest Visual (project tool)
  2. Phillips, Straughan & Atchison 2023, Social & Cultural Geography — Gratitude for and to nature: insights from emails to urban trees
  3. ABC News — People from all over the world are sending emails to Melbourne's trees

Source dossiers and revision state

This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.

unreviewed Revision 2026-10-11-deep-run effective 2026-10-11 · created 2026-10-11

Awaiting operator and domain-expert review; publication of this revision implies neither.

sha256:f674f649046e63e7dccd8e3bc4b3007d018c51a83299afabb62f1d2d8b075727
Revision history → Permanent version link → Machine-readable record → Evidence Constitution →
14
of 14 claims mapped
8
source dossiers
3
publication dates recorded
1
archives linked
0
exact locators
0
content captures hashed

Governance facts carried by the record

Operator
City of Melbourne
Actor types
city-government
Funding model
public
Funding description
Not recorded
Cost
Not recorded
Ownership
Not recorded
Decision rights
Not recorded
Exit conditions
Not recorded

8 source dossiers

City of Melbourne — Urban Forest Strategy (authority) melbourne.vic.gov.au · background

Open original source ↗

Stable source ID
src-fac440eaae2944fe
Publisher
Name not classified · melbourne.vic.gov.au
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The City of Melbourne's page for its 2012 Urban Forest Strategy, the programme behind the tree map and its email-a-tree feature.

Descriptive only — not page/paragraph exact
Claims linked
Background source; no baseline claim points here
Urban Forest Visual (project tool) melbourneurbanforestvisual.com.au · 3 linked claims

Open original source ↗

Stable source ID
src-949a98ba835b2921
Publisher
Name not classified · melbourneurbanforestvisual.com.au
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The interactive map itself: says the City maintains more than 70,000 trees, shows each tree's species, age class and useful life expectancy, and carries an 'Email this tree' link on every tree.

Descriptive only — not page/paragraph exact
Claims linked
Biophilic Cities (research) biophiliccities.org · 3 linked claims

Open original source ↗

Stable source ID
src-9d0bb0cca2a5e187
Publisher
Name not classified · biophiliccities.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Short case study of the email-a-tree (Treemail) phenomenon: the ID-and-email scheme was meant for health reports, and as of 2024 thousands of emails from across and beyond Australia had been sent.

Descriptive only — not page/paragraph exact
Claims linked
AIPH — Melbourne urban forestry (industry association case study) aiph.org · 7 linked claims

Open original source ↗

Stable source ID
src-da7e41389d43df82
Publisher
Name not classified · aiph.org
Type / language
web-page · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
Open archived copy ↗ · 2026-01-17
Content hash
No captured content hash
Locator
Open the recorded source note

Green-city case study by the International Association of Horticultural Producers, a growers' trade body: the strategy's goal to double public-realm canopy from 22% to 40% by 2040, the survey and mapping of 70,000 street trees, and modelling showing at least 3,000 trees a year are needed.

Descriptive only — not page/paragraph exact
Claims linked
ABC News — People from all over the world are sending emails to Melbourne's trees abc.net.au · 7 linked claims

Open original source ↗

Stable source ID
src-2acbb7891f61ecec
Publisher
Name not classified · abc.net.au
Type / language
web-page · language not classified
Published
2018-12-12
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Melbourne gave 70,000 trees email addresses for condition reports; people wrote love letters instead; more than 4,000 emails from around the world since the project started; the councillor responsible explains the reporting purpose.

Descriptive only — not page/paragraph exact
Claims linked
ArchitectureAU — An arboreal affair: Melbourne's love letters to trees architectureau.com · 1 linked claim

Open original source ↗

Stable source ID
src-32c41559af60446f
Publisher
Name not classified · architectureau.com
Type / language
web-page · language not classified
Published
2015-07-21
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

More than 3,000 emails received by mid-2015; the City's Urban Forest team monitors the inbox and occasionally replies in the tree's voice, in several languages.

Descriptive only — not page/paragraph exact
Claims linked
City of Melbourne — Central City Urban Forest Precinct Plan 2025–35 hdp-au-prod-app-com-participate-files.s3.ap-southeast-2.amazonaws.com · 3 linked claims

Open original source ↗

Stable source ID
src-ee6320bb8eaa6dca
Publisher
Name not classified · hdp-au-prod-app-com-participate-files.s3.ap-southeast-2.amazonaws.com
Type / language
pdf · language not classified
Published
Not recorded
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

The City of Melbourne's precinct plan for 2025–35: tree numbers have risen to over 80,000 in the municipality since 2012; a precinct map shows 25.22% canopy for the City of Melbourne; the 40% by 2040 canopy target stands.

Descriptive only — not page/paragraph exact
Claims linked
Phillips, Straughan & Atchison 2023, Social & Cultural Geography — Gratitude for and to nature: insights from emails to urban trees tandfonline.com · 3 linked claims

Open original source ↗

Stable source ID
src-200b499ac23cd2b1
Publisher
Name not classified · tandfonline.com
Type / language
web-page · language not classified
Published
2023-02-23
Updated
Not recorded
Source last checked
No source-level check date
Record last verified
2026-10-11
Dossier created
2026-10-11
Retrieved copy
No local capture recorded
Archive
No archived copy linked
Content hash
No captured content hash
Locator
Open the recorded source note

Peer-reviewed open-access study of emails written to Melbourne's trees, analysing them as expressions of gratitude — for support of life, aesthetic pleasure, distraction and solace.

Descriptive only — not page/paragraph exact
Claims linked
Known limits of this file
  • Publisher names and source languages have not yet been classified; domains are recorded without guessing.
  • Existing source notes are descriptive locators, not page- or paragraph-exact citations.
  • A missing archive, publication date or content hash is shown as null rather than inferred.
  • The project-level evidence grade ranks the strongest source in the entry; it is not a truth score for every claim.