Negotiators meeting in Poland have agreed a way forward on curbing deforestation.
A package of measures has been agreed here that will give "results-based" payments to developing nations that cut carbon by leaving trees standing.
One observer told the BBC that this was the "signature achievement" of these talks.
Deforestation accounts for about 20% of global emissions of carbon dioxide.
Earlier this week the UK, US, Norway and Germany agreed a $280m package of finance that will be managed by the World Bank's BioCarbon fund to promote more sustainable use of land.
Now negotiators have agreed a package of decisions that will reduce emissions from deforestation and forest degradation plus pro-forest acitivities (known as Redd+).
The conference agreed a "results based" payments system that means that countries with forests will have to provide information on safeguards for local communities or biodiversity before they can receive any money.
Via Bert Guevara