Lane will raise awareness of the environmental and community charity’s work by attending events as a speaker and participating in media events on behalf of Groundwork.
He will spread the word about Groundwork on social media and via his contacts network and support individual meetings aimed at recruiting new partners.
Mark Lane presents for the BBC at RHS Flower Shows and on BBC TV Gardeners’ World. He writes for BBC Gardeners’ World magazine, the RHS journal, The Garden, Which? Gardening, as well as Landscape and Urban Design magazine and The Guardian. Lane is also a garden designer.
Lane said: "Parks, recreation grounds, open spaces and greener landscapes are the breathing green lung of the UK. They have a direct positive effect on health, well-being and community life and spirit. I am therefore excited to be championing and promoting these qualities that come by directly re-connecting people with nature and by transforming entire neighbourhoods.
"I have personally experienced the incredible and life-changing effects that green spaces have on a person’s body and mind. Groundwork really is the community charity with a green heart and I look forward to working with them to safeguard our essential, existing and yet to be created greener landscapes."
Groundwork’s national chief executive, Graham Duxbury, said Lane had a wealth of experience and "shares our commitment to protecting the future of parks and open spaces and highlighting the vital role they play in bringing communities together and having a positive impact on their health and wellbeing.
"We look forward to working with Mark to take that message to the widest possible audience and encouraging people to take local action."
Earlier in his career Lane was the publishing director for the Royal Institute of British Architects (RIBA) and the managing editor for leading international arts publisher Thames & Hudson. In 2001 he was in a car accident and had to have operations on his spine, which were complicated by him having spina bifida. He turned to garden design and garden journalism following a 10-year rehabilitation period.