Abstract:We studied the P allocation, dynamics, accumulation and return rate, major fluxes and turnover in a Leymunes chineses grassland community in the northeastern part of China. Our results show 1) that over 99% of the P in the system is distributed in the soil; 2) that the P re-utilization rate in the community is 3.6755 kg·ha-1·yr-1 3) that the P uptake rate, return rate from the aboveground, return rate from the belowground and net community accumulation rate are 3.4063 kg·ha-1·yr-1, 0.1447 kg·ha-1·yr-1, 1.8111 kg·ha-1·yr-1, and 0.35 kg·ha-1·yr-1, respectively, and the total P output accounts for 42.24% of the total P uptake; 4)that the P turnover times in live plant, standing dead matter, dead roots, live roots and organic phosphorus are 1.3364, 6.4350, 2.4378, 1.0887 and 833.3 years, respectively.