【长期施氮与草原生物多样性】J. Storkey A. J. Macdonald P. R. Poulton T. Scott I. H. Köhler H. Schnyder K. W. T. Goulding& M. J. Crawley. Grassland biodiversity bounces back from long-term nitrogen addition. Nature 528 401–404 (17 December 2015) doi:10.1038-nature16444
Abstract
The negative effect of increasing atmospheric nitrogen (N) pollution on grassland biodiversity is now incontrovertible1 2 3. However the recent introduction of cleaner technologies in the UK has led to reductions in the emissions of nitrogen oxides with concomitant decreases in N deposition4. The degree to which grassland biodiversity can be expected to ‘bounce back’ in response to these improvements in air quality is uncertain with a suggestion that long-term chronic N addition may lead to an alternative low biodiversity state5. Here we present evidence from the 160-year-old Park Grass Experiment at Rothamsted Research UK