This paper compared the seasonal dynamics of height and biomass of the population Aneurolepidium chinense,which is the constructive species of the artificial grassland,with that of its neighbouring natural community. 1.From the beginning of June to the middle of August,the height increase of the population follows h_A=30.6783+22.3121·sin{π/324(t/10-4)~2}, and the maximum value of the average height reaches 52.98cm;further- more,its individuals nearly occupy the middle and upper layers of the community;in th...