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,李燕燕,刘文飞,段洪浪,樊后保,胡良,孟庆银

Responses of nitrogen and phosphorus resorption from leaves and branches to long-term nitrogen deposition in a Chinese fir plantation

SHEN Fang-Fang,LI Yan-Yan,LIU Wen-Fei,DUAN Hong-Lang,FAN Hou-Bao,HU Liang,MENG Qing-Yin

表3 2010和2017年的叶和枝N再吸收率与P再吸收率的比值

Table 3 The ratio of N resorption efficiency to P resorption efficiency (REN:REP) of leaves and branches in 2010 and 2017

处理 Treatment 2010 2017 成熟-衰叶Mature- senescent leaf 一-衰叶 One-senesced leaf 二-衰叶 Two-senesced leaf 一-衰枝 One-senesced branch 二-衰枝 Two-senesced branch N0 0.89 0.69 0.37 0.69 0.75 N1 0.82 0.43 0.40 1.40 1.59 N2 0.87 0.63 0.34 1.06 0.67 N3 0.88 0.70 0.35 0.95 0.76