Establishment rate at T3 or later (percent)
Definition
Tree individuals observed alive and thriving at T3 or a later horizon divided by tree individuals planted, as a percentage, unobserved excluded from both sides. Stricter than survival: it requires the thriving condition class. Undefined at T1 and T2. Scheduled observations of the planted-with-monitoring stratum only (ADR-0020).
purpose
To distinguish a tree that has established from one that merely persists, at the horizon where a Highveld tree has been through a winter.
rationale
Three-month survival overstates what a planting achieves; a year on, thriving trees are the ones that will give shade and fruit.
Classification
- Result level: Outcome
- Outcome domains: Climate resilience, Green-space access and amenity
- Unit of observation: Tree individual
- Activity types: Monitoring visit
- Earliest horizon: T3 one year
- Approval status: Approved
- Unit of measure:
PERCENT
Collections
- Survival family: The outcome indicators computed from one monitoring visit’s tree observations under NCGS-M001: trees alive at horizon, survival rate, trees by condition class, establishment rate; and for trees delivered with monitoring, planting uptake at T0+ and survival against the trees acknowledged at handover (ADR-0031).
Methodologies that serve it
- NCGS-M001 — Census count of tree state at a declared horizon
- NCGS-M002 — Stratified-sample estimate of tree state at a declared horizon
Where it can be claimed, by stratum and horizon: the claims table.