The extreme values of the height and the above-ground production (dry weight) of the community are 59 cm and 563 g/m~2 respectively, and they appear in the middle August and the middle September respectively.

• 群落的最大高度为59cm,出现在八月中旬; 地上生产量最大值为干重563g/m~2,出现在九月中旬。