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1 氮和磷添加对树木生长和生产力影响的评估方法

Table 1 Methods for assessing the effects of nitrogen and/or phosphorus addition on plant growth and productivity

衡量方法 Method 计算公式 Calculation equation 单位 Unit 参考文献 Reference 相对生长速率 Relative growth rate (RGR) $RGR=\frac{\text{ln}DB{{H}_{{{t}_{2}}}}-\text{ln}DB{{H}_{{{t}_{1}}}}}{{{t}_{2}}-{{t}_{1}}}$ mm·mm-1·a-1 Carlson et al., 2008; Alvarez-Clare et al., 2013; Li et al., 2018 $RGR=\frac{\text{ln}B{{A}_{{{t}_{2}}}}-\text{ln}B{{A}_{{{t}_{1}}}}}{{{t}_{2}}-{{t}_{1}}}$ mm2·mm-2·a-1 Tian et al., 2017 $RGR=\frac{\text{ln}B{{P}_{{{t}_{2}}}}-\text{ln}B{{P}_{{{t}_{1}}}}}{{{t}_{2}}-{{t}_{1}}}$ kg·kg-1·a-1 Markewitz et al., 2012 $RGR=\frac{B{{A}_{{{t}_{2}}}}-B{{A}_{{{t}_{1}}}}\text{ }\!\!~\!\!\text{ }}{\text{B}{{\text{A}}_{{{t}_{1}}}}}$ % Jiang et al., 2018 绝对增长量 Absolute increment (Δ) $\Delta =DB{{H}_{{{t}_{2}}}}-DB{{H}_{{{t}_{1}}}}$ mm·a-1 Noguchi et al., 2013 $\text{ }\!\!\Delta\!\!\text{ }\!\!~\!\!\text{ }=B{{A}_{{{t}_{2}}}}-B{{A}_{{{t}_{1}}}}$ m2·a-1 Saarsalmi et al., 2012; Tian et al., 2017 $\text{ }\!\!\Delta\!\!\text{ }\!\!~\!\!\text{ }=B{{P}_{{{t}_{2}}}}-B{{P}_{{{t}_{1}}}}$ kg·hm-2·a-1 Markewitz et al., 2012; Du & Fang, 2014