<P> The Lord Howe Island Board instigated an extensive biological and environmental survey ( published in 1974 ) , which has guided the island conservation program . In 1981 , the Lord Howe Island Amendment Act proclaimed a `` Permanent Park Preserve '' over the north and south ends of the island . Administration of the preserve was outlined in a management plan for the sustainable development of the island prepared by the NSW National Parks and Wildlife Service , which has a ranger stationed on the island . The Island was cited under the UNESCO World Heritage List in 1982 . </P>
when did lord howe island became a world heritage site
in 1982