Considering ramet or tiller of Kobresia humilis as a basic unit of population,the dynam-ics and the regulation of populations were studied under different stocking intensities. The re-sults showed that the number of tillers or leaves per ramet and the aboveground biomass oframet individual increased with the increasing of stocking intensities.No significant differ-ence in the mortality of tillers and leaves among grazing treatments. The peak of mortalitywas in the end of growth season for tillets,and in the ...