Productivity responses of different functional groups to litter addition in typical grassland of Inner Mongolia
内蒙古典型草原不同功能群生产力对凋落物添加的响应

Aims Much research has been done on litter in forest ecosystems,but little has been done in grassland ecosys-tems,although litter plays an important role in grasslands. Our objectives were to determine how litter affects aboveground biomass and productivity of different functional groups and whether litter addition has a positive or negative effect in typical grassland. Methods We added litter to typical grassland after frost in October 2002. Then we sampled peak standing crop in August from 2003 to 2007. W...