Fig. 5From: Nitrogen addition increases sexual reproduction and improves seedling growth in the perennial rhizomatous grass Leymus chinensisAverage and actual monthly precipitation. Long-term average precipitation is based on monthly average precipitation from 1989 to 2009, collected at the weather station of the Ecosystem Field Station of Northeast Normal University, which is located close to the research site. The actual monthly data is from an eddy meteorological tower located adjacent (~ 200 m) to the experimental plotsBack to article page