An environmentalist fears that the public-private partnership (PPP) scheme might be abused by property developers. Lister Cheung Lai-ping, chief executive of the Conservancy Association, said: 'What is the purpose of identifying those top sites? Is it for conservation or development? As they are of high ecological value, we would like to see them protected rather than developed.' Ms Cheung also wanted to know if land use or zoning controls would be relaxed under the scheme, thereby opening the floodgate for development at these sites. Karen Woo Lai-yan, senior environmental affairs officer, said the policy failed to do enough to conserve the sites. 'It relies on the landowners to raise proposals. Unless they agree, there is nothing else that can be done to conserve the site.' Ms Woo said that in the case of Sham Chung, its major landowner Sun Hung Kai could ignore the policy and go ahead with its golf project because it was not subject to land use or zoning controls. Alan Leung Sze-lun, senior conservation officer of the World Wide Fund for Nature Hong Kong, complained that the policy did not set clear conservation objectives or concrete action plans to achieve them. He also criticised it for failing to take care of marine sites. Daniel Lam Wai-keung, vice-chairman of the Heung Yee-kuk, was also unhappy with the policy, saying the government should resume ecologically important sites if development was not allowed. Alex Lam Shut Kut-shing, a landowner who runs an organic farm in Tai Ho, Lantau, said he welcomed the policy but still preferred to see development in Tai Ho. 'Just let it be developed so that more people can come and stimulate the local economy,' he said. Mr Lam said he was open-minded about co-operating with green groups or developers in conserving the site but warned that villagers might resist radical changes.