MAI Po marshes, 380 hectares of pristine wetlands in the northwest New Territories, will benefit from today's walk. World Wide Fund for Nature Hong Kong would receive part of the $1.6 million which the one-hour walk-a-thon was expected to raise, said Young Lo-lin, the reserve's manager. The reserve was chosen because it helped to educated people about the importance of keeping Hong Kong clean, he said. 'Mai Po helps the tourism industry by attracting more than 40,000 bird watchers, nature lovers and students from all over the world annually. 'Many visitors to Hong Kong are delighted to find that only a short distance from Central's high-rise buildings are lush parks and nature trails. 'Keeping these open spaces clean and pollution-free is important if Hong Kong is to continue to attract visitors.' Proceeds from the walk will be spent revamping exhibits in the reserve's education centre, which houses a static display of posters and models. Exhibits, which have not been changed since the hall opened in 1986, would be kept simple but interesting, Mr Young said. Signs explaining displays in Chinese and English would be made and many of the outdated mechanical exhibits replaced. 'Overhauling the exhibition has taken a lot of time and planning as displays have to have universal appeal for people from different countries, ages and tastes,' Mr Young said. 'We want the exhibits to be understood by children but also appeal to adults. We are adapting some exhibits for disabled people. 'Since the exhibition was first opened there has been demand from disabled groups to update the displays, so people in wheelchairs can read signs. 'We hope to add displays that blind people will be able to touch and learn from. Next year, we hope to start tours for blind people.' Visitors would be able to touch some of the new exhibits, which would include bird feathers and shells. However, reserve officers have decided not to install more hi-tech automated displays that required batteries due to maintenance costs. Keeping exhibits simple would also mean displays could be changed and updated annually without involving a great deal of expense, Mr Young said. While one of the reserve's aims was to protect nature, equal resources and efforts were spent on education, he said. Every year, 350 school groups visited the reserve for on-location lessons. The reserve was one of the few places in Hong Kong where students could go on field trips to study nature, he said.