even in the cold quiet of winter, this woodland is revealing scientific secrets. we re doing a six hectare area, which is probably one of the largest study areas. researchers are weighing the trees here in wytham wood in oxfordshire, using a laser scanning technique that measures each tree in fine detail. you can see it sjust a bunch of points, but you can see how we capture the full 3d structure. each laser scanned point is a dot on a three dimensional map of a tree, and that s converted into a solid model. this is the measure of each tree s volume, which scientists can use to calculate the amount of carbon that s locked into every inch of trunk and branch. how much does that tree weigh? this one was about 25 tonnes overall, of which about half of that will be carbon. we have more than almost 1,000 trees that will be nondestructively weighed here with laser and we found significantly more carbon
so you should avoid losing it at almost any cost, regardless of how many trees you might think about planting. those large trees are incredibly important. capturing detailed pictures of what s locked inside each tree, the researchers say, reveals just how vital our existing forests are in the fight against climate change. joining us now is mat disney, professor of remote sensing in the department of geography at ucl and member of the environmental monitoring and modelling group. just explain a bit more about how important this study is, what is its long term significance for us and the planet? long-term significance for us and the planet? the planet? one of the main takeaways the planet? one of the main takeaways from the planet? one of the main takeaways from this - the planet? one of the main takeaways from this is - the planet? one of the main takeaways from this is not . the planet? one of the main takeaways from this is not a | the planet? one of the main - takeaways from thi