Ancient Woodland Restoration Project

4 min


100+ acres set for transformation

The National Trust says its largest ancient woodland is set to be restored on a scale rarely seen. More than 100 acres will be transformed back to its former glory as teams use specialist equipment to protect the woodland floor. 

Ashridge Estate in Hertfordshire will be the site for improvement work which organisers say will boost prospects for wildlife and protect its diverse habitats, which are home to many species that are endangered or in decline.  

The estate, which has been used as a location for films including Harry Potter and the Goblet of Fire and Les Misérables. 

It’s equally well-known for its diverse landscape including rare chalk grassland, Capability Brown parkland, open commons and ancient woodland that are home of a rich variety of wildlife. 

The woodland at Ashridge Estate is also the largest in the care of the conservation charity, with nearly half of the nearly 5000 acre estate covered in woodland of which more than 700 acres is classified as ancient woodland. 

The three year project will restore more than 100 acres of the ancient woodland – that’s the equivalent to more than 100 football pitches. Managers say it’s the first time they’ve attempted something on this scale. 

21212Autumnal woodland and fields on the Ashridge Estate, Hertfordshire, in November.

The work will involve removing non-native conifers and replanting the project areas with native broadleaf species, including replanting with more than 3000 saplings across a five acre site. 

Providing essential habitats for species

‘Restoring plantation woods back to native broadleaf habitats is essential work that the National Trust is undertaking to prevent the decline in the UK’s wildlife, said Tom Hill, Trees and Woodland Adviser for the National Trust. 

‘Our ancient woodland soils hold incredibly rich seedbanks and are teeming with microscopic life below ground, essentially forming the base of the ecological pyramid.’ 

‘They provide essential habitats for a huge variety of species of wildlife which are important for a healthy ecosystem.’ 

The restoration project was previously thought to be impossible due to its scale, and because much of this ancient woodland is located on particularly inaccessible and ecologically vulnerable parts of the landscape. 

To avoid causing further damage to these sensitive environments, the new project trials the use of specialist track matting, funded by the Forestry Commission Innovation Fund, to help protect the ground around the woodland rides.

These areas are often seen to be most at risk for damage when accessing the hardest to reach parts of the estate. 

Adding an extra layer between the machinery and the forest floor, the matting prevents damage to the woodland soils by reducing rutting along the woodland tracks, as well as protecting the nearby archaeological features.

Protecting ancient woodland

‘Many of the woodlands are deep in the landscape where there are no surfaced paths or trackways,’ explains Emily Smith, Countryside Manager at Ashridge Estate. 

‘The heavy clay soil is vulnerable to compaction and erosion, meaning that until now it has not been possible to carry out the large-scale forestry work needed without causing long term damage to the ancient woodland floor.’ 

‘It’s been a challenge for many years, so we are really excited to be trialling this new method.’  

‘In the first year of the project we have laid around 1000m of matting to reach one of our less ecologically sensitive woods to help inform the next steps.’ 

‘We will be evaluating how effective the matting has been in protecting the ancient soils from harm. By the time the project is complete, we expect to have laid 2.5km of temporary matting.’ 

This year, nearly 15 acres of ancient woodland have been cleared and thinned. In early 2023, parts of the project area will be replanted with a mixture of native broadleaf species like oak, hornbeam, beech and wild cherry. 

‘In year two and three we will move deeper into the estate to the harder to reach areas which are the most significant when it comes to nature conservation value,’ explains Emily. 

‘By trialling and testing this new method, we hope to grow our confidence in the approach as the project develops.’ 

‘If successful, the track matting project at Ashridge could set a new bar in terms of what fully sustainable forestry could look like in the UK – it’s a really exciting prospect,’ says Tom. 

Learnings from the project will be shared with other conservation organisations across the country to help inform future restoration throughout the UK. 

Photograph: Approximately 1000m of track matting has been used in the first year of the restoration work to protect the ground from machinery. Credit: National Trust / Tom Hills

Photograph: Ashridge Estate is the largest woodland in the care of the National Trust. Credit National Trust / Chris Lacey

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