内蒙古东部天然白桦林的凋落物性质和储量及其随温度和降水梯度的变化格局

陈莎莎, 刘鸿雁, 郭大立

Litter stocks and chemical quality of natural birch forests along temperature and precipitation gradients in eastern Inner Mongolia, China

CHEN Sha-Sha, LIU Hong-Yan, GUO Da-Li

图4 内蒙古12个样地凋落物各个层次在不同降水梯度(Pre1-Pre3)和温度梯度(T1-T4)下的平均碳(A-C)、氮(D-F)、磷(G-I)储量。 不同小写字母表示在某个降水条件下同一层次不同温度间元素储量间的差异显著, p < 0.05。小于3个数据的没有标注字母。T1-T4, Prel-Pre3, 同图1。

Fig. 4 Mean stocks of C (A-C), N (D-F) and P (G-I) of different litter layers along precipitation (Pre1-Pre3) and temperature gradients (T1-T4). Different lower-case letters represent significant differences (p < 0.05) in the stocks of C, N, and P of the same layer in a certain precipitation gradient among four temperature gradients. Item that has less than three values has no letter labelled. T1-T4, Prel-Pre3, see Fig. 1.