氮磷添加对树木生长和森林生产力影响的研究进展

冯继广, 朱彪

A review on the effects of nitrogen and phosphorus addition on tree growth and productivity in forest ecosystems

FENG Ji-Guang, ZHU Biao

表2 基于胸径的树木等级划分

Table 2 Methods for assessing the effects of nitrogen and/or phosphorus addition on plant growth and productivity

胸径等级 Classes for diameter at breast height (cm) 参考文献 Reference 小树 Small tree 中树 Medium tree 大树 Large tree 3-10 10-20 >20 Fisher et al., 2013; Jiang et al., 2018; Zou et al., 2019 5-10 10-30 >30 Alvarez-Clare et al., 2013; Tian et al., 2017 5-15 >15 Li et al., 2018 10-25 >25 Wright et al., 2018