THE slogan ''Use Your Head to Improve Our Environment'' will come alive in the next few months when 130 young people help put the Environmental Pioneer Scheme into effect. This year's newly-formed youth squad, specially groomed as ''Environment Pioneers'', will use their creativity to come up with ideas for environmental projects in their neighbourhood. The scheme, following its successful initial launch in 1992, aims to enhance young people's knowledge and involvement in protecting their environment. The organiser, the Hong Kong Environmental Centre of the Conservancy Association, is keen to encourage youngsters to be new blood in supporting the environmental cause in their own community. ''We try not to restrict the participants to just contributing 20 hours volunteer service to an environmental agency, as we did last time,'' said Mr Chan Wan-hang, volunteer organiser of the scheme. ''Instead, we want them to actively apply what they have learnt to devise environmental programmes that would benefit the community.'' At the recent opening ceremony of the project, officiating guest, the Reverend Mr Fung Chi-wood, deputy convenor of the Legislative Council's Environmental Affairs Panel, told the pioneers: ''We welcome all of you to act as our antenna and express your opinions about the environment to the Government.'' The half-year project then kicked off with a three-day education and fun camp in Sai Kung during the Christmas holidays. Participants, generally above 14, learnt about global problems, basic environmental concepts and how to pioneer environmental protection in their daily life. They were given informative pamphlets relating to practical topics such as household waste, food additives, choice of detergents and clothes. There was also time for outdoor activities like archery, barbecue, wild-life exploration and stargazing. Before the camp ended, the pioneers submitted outlines of their plans to improve their neighbourhood. The plans, to be carried out within the next three months, will be evaluated in April. Mr Chan said some pioneers had made some thoughtful suggestions. One wanted to start a ''green column'' in his school newspaper to educate schoolmates on environmental protection. Another even suggested the idea of training ''Junior Environmental Pioneers'' from Primary Four to Six through activities like an environmental quiz and chess games on the subject. During these few months, the pioneers will also attend seminars and visit sites like the Mai Po marshes and a paper recycling plant. They will receive certificates in July on completing their projects and satisfying the Pioneer Scheme requirements.