TY - GEN AU - Fang,Ying AU - Xun,Fen AU - Bai,Wenming AU - Zhang,Wenhao AU - Li,Linghao TI - Long-term nitrogen addition leads to loss of species richness due to litter accumulation and soil acidification in a temperate steppe SN - 1932-6203 PY - 2013///0719 KW - Acids KW - chemistry KW - Biomass KW - China KW - Desert Climate KW - Ecosystem KW - Humans KW - Nitrogen KW - Plant Roots KW - Poaceae KW - classification KW - Soil KW - Temperature N1 - Publication Type: Journal Article; Research Support, Non-U.S. Gov't UR - https://doi.org/10.1371/journal.pone.0047369 ER -