Biomass allocation patterns of Seriphidium transiliense under clipping and grazing conditions

In order to understand the resource allocation pattern under clipping and grazing conditions, the biomass of root, stem, leaf and flower (seed) of Seriphidium transiliense was measured. The results showed that the clipping treatment increased the biomass allocation to root but reduced that to stem and leaf, and with the increase of clipping intensity the ratio of biomass allocation to root increased by 8% to 20% with the increasing clipping intensity, the ratio to stem and leaf relevantly decreased by 5% to 14% and 3% to 6% respectively. The grazing treatment showed the same impact. The biomass allocation pattern was root stem leaf flower (seed), the biomass allocated to root accounted as much as 45% to 67%, and biomass for sexual growth was less than 1%. The priority of biomass was given to reserve organ (root) under clipping and grazing conditions.