Plantation has large carbon sequestration potential, and it plays an important role in mitigating global warming. However, the responses of carbon fluxes to biophysical factors across plantation sites are still not clear. We synthesized carbon flux data measured by the eddy covariance method over the plantations at the global scale to explore the shifts of carbon exchange with latitude, discuss the link of carbon fluxes with biophysical variables, and compare the difference in carbon sequestration between needleleaf and broadleaf plantations. Annual net ecosystem production (NEP), gross primary production (GPP) and ecosystem respiration (ER) across all plantations were 353±27, 1762±60 and 1385±46 g C m⁻² yr⁻¹, respectively. The mean annual NEP of needleleaf biomes was similar to that of broadleaf biomes. GPP and ER were 48% and 64% larger at needleleaf forests than at broadleaf forests. Annual NEP, GPP and ER decreased with the increase of latitude significantly. At the half-hourly scale, the increase of diffuse radiation enhanced carbon assimilation of needleleaf and broadleaf biomes remarkably. On the annual scale, both GPP and NEP were sensitive to mean annual temperature (MAT) and leaf area index (LAI). Annual precipitation was the dominant factor regulating the variability of GPP and ER, and it explained 34% and 47% of the variation in GPP and ER, respectively. The extension in growing season length (GSL) and rising soil water content (SWC) enhanced ecosystem photosynthesis and respiration of planted forests. However, the effect of GSL and SWC on net carbon uptake was not remarkable. These results highlight the importance of biophysical factors in regulating carbon dynamics of the plantations, and contribute to understanding of the differences in carbon sequestration between needleleaf and broadleaf biomes.

人工林固碳潜力大，对减缓全球变暖具有重要作用。然而，碳通量对整个种植园地点的生物物理因素的反应仍不清楚。我们综合了全球范围内人工林的涡度协方差法测量的碳通量数据，以探索碳交换随纬度的变化，讨论碳通量与生物物理变量的联系，并比较针叶和阔叶人工林之间碳固存的差异. 所有种植园的年度净生态系统生产 (NEP)、总初级生产 (GPP) 和生态系统呼吸 (ER) 分别为 353±27、1762±60 和 1385±46 g C m ⁻² yr ⁻¹， 分别。针叶生物群落的年平均 NEP 与阔叶生物群落相似。针叶林的 GPP 和 ER 比阔叶林大 48% 和 64%。年NEP、GPP和ER随着纬度的增加显着下降。在半小时尺度上，漫射辐射的增加显着增强了针叶和阔叶生物群落的碳同化作用。在年尺度上，GPP和NEP均对年平均气温（MAT）和叶面积指数（LAI）敏感。年降水量是调节GPP和ER变异的主导因素，分别解释了GPP和ER变异的34%和47%。生长季节长度 (GSL) 的延长和土壤含水量 (SWC) 的增加增强了人工林生态系统的光合作用和呼吸作用。然而，GSL和SWC对净碳吸收的影响不显着。这些结果突出了生物物理因素在调节种植园碳动态方面的重要性，并有助于理解针叶和阔叶生物群落之间碳固存的差异。