JAKARTA — Asia Pulp and Paper, one of the largest pulp and paper producers in the world, said on Tuesday that it had stopped clearing natural forests across its supply chains in Indonesia, accelerating an earlier commitment to do so by 2015.

The announcement comes as companies that rely on forests face increasing pressure from buyers to improve their environmental standards while financing aggressive demand-driven expansions. It also is just months before a two-year moratorium on new forest concessions mandated by the Indonesian government ends in May.

Environmental advisers say the about-face by a company with a history of poor corporate and environmental management could have wider implications for Indonesia’s main exporting industries, palm oil and mining.

“If A.P.P. can do this, there is no reason why any company anywhere in the world can’t do this,” said Scott Poynton, the executive director of the Forest Trust, a nonprofit forest management organization that is working with Asia Pulp and Paper, also known as A.P.P., to see that it implements its commitments. “Hopefully the government of Indonesia will look to bring in regulations to force companies in Indonesia to follow A.P.P.’s lead.”