BONN, Germany – China and 18 other nations representing half the world’s population said on Thursday they planned to increase the use of wood and other plant matter from sustainable sources to generate energy as part of efforts to limit climate change. The group would work out collective targets for increasing the use of what they called sustainable bioenergy, they said during talks in Germany among 200 nations on bolstering the 2015 Paris climate agreement. Argentina, Brazil, Britain, Canada, China, Denmark, Egypt, Finland, France, India, Indonesia, Italy, Morocco, Mozambique, the Netherlands, Paraguay, Philippines, Sweden and Uruguay signed up for the plan. They agreed to “develop collective targets prescribing the contribution of sustainable bioenergy to final energy demand and as a percentage of transport fuel use”, their joint Biofuture Platform initiative in a statement.