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Net Primary Production of Chinese Arborvitae Plantations under Different Densities

机译:不同密度下侧柏人工林净初级生产力

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In this study, we measure the distribution of carbon pools and component fluxes of Net Primary Production (NPP) in an Chinese arborvitae (Platycladus orientalis (L.) Franco) plantation in Beijing from 2009 to 2010. At 22 years old, the plots were reduced from 5900 to 4100 and 3000 trees/ha in three replicates. Results shown that aboveground biomass was highest in the N4100 treatment plots, lowest in the N3000 treatment and intermediate in the unthinned control plots. Annual net biomass increment followed the same pattern across treatments. NPP measures suggested that the control forests and forests from the N4100 treatment have functioned as carbon sinks (4.06 and 4.59 t C/ha/year, respectively), while forests from N3000 treatment appeared to be also a carbon sink (2.95 t C/ha/year).
机译:在这项研究中,我们测量了2009年至2010年在北京的中国侧柏(Platycladus Orientalis(L.)Franco)人工林中碳库的分布和净初级生产(NPP)的通量。在22岁时,该地块是一式三份,从5900减少到4100,每公顷减少3000棵树。结果表明,地上生物量在N4100处理区最高,在N3000处理区最低,而未稀释对照区为中间。各个处理之间的年度净生物量增量遵循相同的模式。核电厂的措施表明,对照森林和采用N4100处理的森林均具有碳汇功能(分别为4.06和4.59 t C / ha /年),而采用N3000处理的森林似乎也具有碳汇(2.95 t C / ha)。 /年)。

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