stephon vic cop would energy expert is examining how much biomass can be produced by poplar trees. they'll still produce shoots from their roots or stumps after they're felled that's why one tree can be harvested several times each sector of poplar forest can produce the equivalent of around 5000 liters of heating oil per year the trees also cleanse the atmosphere absorb greenhouse gases and help ensure clean drinking water. point 2 meters that's a fair amount for an 11 year old tree. 50 percent of germany's energy is used to produce heat and what is ideal for that purpose we can burn it with a very high yield support for. the scientists to researching how much wood and how much bark the popular generated and how much energy can be produced from it in the ideal. only the wood would be used for power generation the bark produces more fine particulate the researchers are working on new harvesting methods leaving the bark behind in the forest along with the leaves to rot and feed the soil with nutrients . back in the climate protection forest which cattle planted 25 years ago the rese