Study throws doubt on role of grassland in climate battle
A NEW study has cast doubt on the ability of modern grasslands to fight climate change. An investigation into why the world’s 50 million square kilometres of grasslands aren’t soaking up more CO2 from the atmosphere has shown many such habitats reached their peak over 100 years ago. Based on UK grown samples, the study also shows that grasses are physiologically constrained from taking up further CO2 – even when nitrogen fertilisers are added to encourage their growth. In fact, grasslands that have received high levels of nitrogen fertiliser are today yielding less than they wer...
Source: westerntelegraph.co.uk