German Environment and Nuclear Safety Minister Sigmar Gabriel has told the Tokyo Shimbun that Chancellor Angela Merkel will make the proposal in a meeting with Japanese Prime Minister Shinzo Abe in Berlin next Wednesday.
The German proposal is intended to urge China and India to join international efforts to reduce heat-trapping greenhouse gas emissions, the report said.
Under the 1997 Kyoto Protocol, developed countries are obliged to reduce greenhouse gas emissions. Japan is required to reduce its gas emissions between 2008 and 2012 by 6 percent from the level in the base year of 1990.
But developing countries currently have no obligation to cut such emissions under the pact.
Gabriel told the Japanese newspaper that Germany places a substantial focus on international efforts to help fast growing economies with environmental conservation and sustainable energy policies.
Japan will be a key partner in helping achieve such a target, Gabriel reportedly said.
The minister also said Germany and Japan could have a major chance to develop new technologies to separate economic growth from an increase in energy consumption.
Gabriel called for promoting academic exchanges between Germany and Japan as part of bilateral efforts to develop energy-saving environmental technologies, the report said.
Development of environmental technologies will be on the agenda for next Wednesday's summit meeting between Merkel and Abe, the minister reportedly said, noting that Germany and Japan are well known for taking initiatives in promoting environmental policies.
Abe is scheduled to leave Tokyo next Tuesday for a five-day trip to Britain, Germany, Belgium and France. Through talks with European leaders, Abe hopes to reaffirm cooperation in tackling global issues.
Germany chairs the Group of Eight summit this year and also the European Union in the first half of 2007.