长期氮沉降对杉木人工林叶、枝氮磷养分再吸收的影响
沈芳芳1,2,李燕燕1,2,刘文飞2,段洪浪2,樊后保2,*(
),胡良2,孟庆银3
),胡良2,孟庆银3
Responses of nitrogen and phosphorus resorption from leaves and branches to long-term nitrogen deposition in a Chinese fir plantation
SHEN Fang-Fang1,2,LI Yan-Yan1,2,LIU Wen-Fei2,DUAN Hong-Lang2,FAN Hou-Bao2,*(),HU Liang2,MENG Qing-Yin3
),HU Liang2,MENG Qing-Yin3
图1. 长期氮沉降条件下杉木叶和枝的C、N、P含量及化学计量(平均值+标准误差)。不同小写字母表示相同龄级叶或枝不同氮沉降水平下差异显著(p < 0.05)。N0、N1、N2、N3, 施氮量分别为0、60、120、240 kg·hm-2·a-1。
Fig. 1. C, N, P content and stoichiometry of leaves and branches of Chinese fir under long-term nitrogen deposition (mean + SE). Different lowercase letters indicate significant differences for the same life span leaf or branch under different nitrogen deposition treatment levels (p < 0.05). N0, N1, N2, N3, nitrogen addition 0, 60, 120, 240 kg·hm-2·a-1, respectively.
