Supplementary material to "Long-term changes of nitrogen leaching and their contributions to lake eutrophication dynamics on the Yangtze Plain of China"

Abstract

Section S1 Regrouping land cover fractionsAnnual land cover fractions of urban, cropland, pasture and natural area were derived from the 37 land cover types in the Climate Change Initiative Land Cover (CCI-LC version 2.0) dataset (Defourny et al., 2012) with a spatial resolution of 300m. For a given 0.1° grid cell, we determined all original land cover class pixels within this grid cell, which were then grouped into urban, cropland, pasture and natural area according to the guideline of CCI-LC dataset (Kirches et al., 2014). The cover fractions of each land use type were calculated as the number of pixels in the land use type divided by the total number of pixels within one 0.1 grid cell, which were used as input datasets for LPJ-GUESS.