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研究林分碳储量对了解一个地区森林生态系统服务功能和碳汇林分经营具有重要意义。本研究以上海黄浦江上游水源涵养林杜英、香樟、马褂木和黄山栾树等4个主要树种为对象,构建了4个树种林木生物量方程,并对4个树种林分生物量(乔木层、凋落物层)碳储量和土壤碳储量进行了估测。结果表明,4个树种的胸径-生物量方程拟合效果较好(R2>0.9)。9年生人工林生态系统总碳储量分别为杜英117.32t·hm-2、香樟127.38t·hm-2、黄山栾树80.93t·hm-2、马褂木105.87t·hm-2。在杜英、香樟、黄山栾树和马褂木林总碳储量中,乔木层碳储量所占比例分别为35.1%、44.6%、35.2%和19.0%,凋落物层碳储量所占比例分别为1.2%、1.9%、1.2%和0.6%,土壤碳储量(0～40cm)所占比例分别为63.7%、53.5%、63.6%和80.4%。这些人工幼龄林现在处于快速生长阶段,具有较高的固碳潜力。
Studying the stand carbon storage is of great significance for understanding the service functions of forest ecosystems and the management of carbon sink stands in a region. In this study, the four tree species of four tree species, namely, the water conservancy forest Du Ying, the camphora, the Chinese cabbage and the Huangshan Luan tree in the upper reaches of the Huangpu River in Shanghai, were constructed. The biomass of the four tree species, Litter layer) carbon stocks and soil carbon stocks were estimated. The results showed that the DBH-biomass equation of the four tree species fits well (R2> 0.9). The total carbon storage of 9-year-old plantation ecosystems were 117.32 t · hm-2, 127.38 t · hm-2, 62.98 t · hm-2 and 55.87 t · hm-2, respectively. Among the total carbon stocks of Du Ying, Cinnamomum camphora, Huangshan Luan tree and Maralia chinensis, the proportion of carbon stocks in arbor layer was 35.1%, 44.6%, 35.2% and 19.0% respectively, and the proportion of carbon stocks in litter layer was 1.2% , 1.9%, 1.2% and 0.6%, respectively. The proportions of soil carbon storage (0 ~ 40cm) were 63.7%, 53.5%, 63.6% and 80.4% respectively. These artificial young forests are now in a period of rapid growth with high carbon sequestration potential.