模拟氮沉降对北京东灵山辽东栎林树木生长的影响
邹安龙,李修平,倪晓凤,吉成均(
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Responses of tree growth to nitrogen addition in Quercus wutaishanica forests in Mount Dongling, Beijing, China
ZOU An-Long,LI Xiu-Ping,NI Xiao-Feng,JI Cheng-Jun()
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图1. 氮添加对北京东灵山辽东栎林土壤全碳(TC)、全氮(TN), 全磷(TP)含量以及pH值的影响(平均值+标准误差, n = 3)。不同小写字母表示处理间差异显著(p < 0.05)。CK、N50、N100分别表示氮添加量0、50、100 kg·hm-2·a-1。
Fig. 1. Influence of nitrogen addition treatments on soil total carbon (TC), total nitrogen (TN), total phosphorus (TP) content and pH value in Quercus wutaishanica forests in Mt. Dongling, Beijing (mean + SE, n = 3). Different lowercase letters indicate significant difference among treatments (p < 0.05). CK, N50, N100 denote nitrogen addition 0, 50, 100 kg·hm-2·a-1, respectively.
