The aim of this research is to investigate the interception effect of heavy metals, such as zinc (Zn), copper (Cu), lead (Pb), arsenic (As), and cadmium (Cd) in different ages of Chinese fir plantations. The study was conducted in 21-year-old (CF21, near mature stand) and 29-year-old (CF29, old stand) pure Chinese fir forest stands (CF) as well as a mixed coniferous and broad-leaved forest stand (MF) in Huitong from November 2016 to October 2017. The study results revealed the variation ranges of interception of Cu, Zn, Cd, As, and Pb by the research forest stands were respectively, 3.436–36.778 mg·m⁻²·month⁻¹, 7.458–98.763 mg·m⁻²·month⁻¹, 0.003–0.608 mg·m⁻²·month⁻¹, 0.094–4.471 mg·m⁻²·month⁻¹, and 1.251–23.141 mg·m⁻²·month⁻¹. Compared with the different ages of CF, the average monthly interception of Cu, Zn, Cd, As, and Pb in CF21 were respectively, higher 6.0%, − 3.3%, 59.0%, 1.4%, and 3.4% than those in CF29. However, seasonal changes of that in CF of different ages were those in CF21 > in CF29 in summer and autumn, and those in CF21 < in CF29 in winter and spring. Compared in different forest types, the average monthly interception of Cu, Zn, Cd, As, and Pb in MF was respectively, higher 20.2%, 5.8%, 185.2%, 2.6%, and 12.3% than those in CF. Furthermore, the seasonal flux of heavy metal retention in the forest ecosystems was higher during winter and spring than in summer and in autumn. This study provided an important information regarding the dynamics of heavy metal interception in forest ecosystems.

本研究旨在探讨不同林龄杉木人工林中锌（Zn）、铜（Cu）、铅（Pb）、砷（As）和镉（Cd）等重金属的截留效果。该研究在 21 年生（CF21，近成熟林）和 29 年（CF29，老林）纯杉林（CF）以及针阔混交林（ MF) 于 2016 年 11 月至 2017 年 10 月在会同。研究结果表明，研究林分对 Cu、Zn、Cd、As 和 Pb 截留的变化范围分别为 3.436-36.778 mg·m ^-2 ·月^{- 1} , 7.458–98.763 mg·m ^-2 ·month ^-1 , 0.003–0.608 mg·m ^-2 ·month ^-1, 0.094–4.471 mg·m ^-2 ·month ^-1和 1.251–23.141 mg·m ^-2 ·month ^-1. 与CF不同年龄相比，CF21中Cu、Zn、Cd、As和Pb的月平均截留率分别比CF29高6.0%、-3.3%、59.0%、1.4%和3.4%。但不同年龄CF的季节变化分别为夏秋季CF21>CF29，冬春季CF21<CF29。不同林种比较，MF中Cu、Zn、Cd、As、Pb的月平均截获量分别比CF高20.2%、5.8%、185.2%、2.6%和12.3%。此外，森林生态系统中重金属保留的季节性通量在冬季和春季高于夏季和秋季。该研究提供了有关森林生态系统中重金属截留动态的重要信息。