Chief executive Ian Barrett said: “We know that getting people here is great for their health and wellbeing.
“It takes people on that journey of falling in love with nature and taking action for the natural environment.
“Oxfordshire’s got a massively growing population, so there are more and more people who would benefit from that.”
Among the Trust’s land are the Wittenham Clumps, Little Wittenham Wood and Broad Arboretum.
They are open to the public and welcome 200,000 visitors annually.
The Trust has nearly 300 active volunteers, who manage the land, help at events and get involved in the education offering.
It also runs a Young Volunteers Programme for 13-18-year-olds.
