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7. 北京东灵山土壤全氮(TN)含量与辽东栎以及群落水平不同径级(DBH)树木相对增长速率(RGR)的关系。每一个点表示该样方的平均值。CK、N50、N100分别表示氮添加量0、50、100 kg·hm-2·a-1。
Fig. 7. Relationships of relative growth rate (RGR) of different diameter at breast height (DBH) classes of Quercus wutaishanica in Mt. Dongling, Beijing and trees at community level with soil nitrogen (TN). CK, N50, N100 denote nitrogen addition 0, 50, 100 kg·hm-2·a-1, respectively.
