The Woodland Trust (Coed Cadw) is launching a petition calling for all cities, towns and villages in Wales to have a minimum 20% tree canopy cover.
It also backs the planting of native trees which, it says, can provide a habitat and nectar source for pollinators and fruit trees which will provide a sustainable source of food.
It says the tree canopy cover in Wales varies dramatically, from just 4.5% in Fochriw in Caerphilly to 34% in Trimsaran in Carmarthenshire.
It also cites a study in Wrexham, last year, which, it says, showed trees save the local economy £1.3m every year by:
- Intercepting 27 million litres of rainfall from entering the drainage system, the equivalent of saving £460,000 in sewerage charges.
- Absorbing 1,329 tonnes of carbon dioxide from the atmosphere.
- Improving health by removing 60 tonnes of air pollution, saving the health services £700,000.