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2. 杉木叶和枝的测试指标(C、N、P、C:N、C:P、N:P)氮沉降处理平均值与N0处理平均值的百分比(N0/N0 = 100%)。A, 一年生叶。B, 二年生叶。C, 衰老叶。D, 一年生枝。E, 二年生枝。F, 衰老枝。N0、N1、N2、N3, 施氮量分别为0、60、120、240 kg·hm-2·a-1。
Fig. 2. Mean percentage changes of measured parameters (C, N, P, C:N, C:P, N:P) of Chinese fir leaf and branch after N deposition treatment for 14 years relative to these values under control (N0) (N0/N0 = 100%). A, One-year old leaf. B, Two-year old leaf. C, Senesced leaf. D, One-year old branch. E, Two-year old branch. F, Senesced branch. N0, N1, N2, N3, nitrogen addition 0, 60, 120, 240 kg·hm-2·a-1, respectively.
