Changes in plant species richness due to land use and nitrogen deposition across the globe

Data and scripts corresponding to the article "Combined
effects of land use and nitrogen deposition on plant species richness
worldwide". In the article, we quantified the combined
effects of land use and nitrogen deposition on terrestrial plant species
richness at a 0.25º spatial resolution across the globe. We first
determined the proportional changes in plant species richness for
different land-use types and N deposition values through meta-analyses of
local monitoring data obtained from the literature. We then combined the
site-level responses with global land use and N deposition maps in a new
multi-pressure species-area relationship (mp-SAR) model to provide
estimates of changes in plant species richness at a resolution of 0.25º
(about 25 km at the equator) worldwide. In this repository you will find
all the data necessary to get the final results and the code in R to guide
you through out the analysis.