The countries, which together control half of the world's tropical forests, vowed cooperation "to slow, stop and reverse the loss of forest cover and to promote the rehabilitation of degraded forest lands, forest management and conservation."
But the 11 states, in a joint statement, also said the challenge of curbing greenhouse-gases from deforestation "is as complex and cumbersome for developing countries as for developed countries reducing emissions from industry and energy sectors." 
The meeting gathered leaders and ministers from Brazil, Cameroon, Colombia, Congo, Costa Rica, Democratic Republic of Congo, Gabon, Indonesia, Malaysia, Papua New Guinea and Peru. It was chaired by Indonesian President Susilo Bambang Yudhoyono.
The statement said the 11 were concerned over a warning, issued this year by the UN's top scientists, that climate change would widely damage forests.
Tropical rainforests serve as sources of livelihood and repositories of cultural heritage, and provide habitat for biodiversity and storehouses of genetic resources that can be exploited for food, medicine and other goods, they said.
Deforestation accounts for roughly a fifth of global-warming gases.
Indonesia hosts a pivotal UN meeting at Bali in December to determine a new formula to combat global warming.
http://www.un.org/climatechange/2007highlevel/