Widespread greening and an increasing global terrestrial carbon sink over recent decades have been reported. However, the spatio-temporal relationships between vegetation greenness and productivity and the factors influencing this relationship remain unclear. We define a new metric of ecosystem-scale photosynthetic efficiency (EPE) to analyse its spatio-temporal pattern and investigate how potential drivers regulate the greenness–productivity relationship.

中文翻译：

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全球干旱和潮湿地区生态系统尺度光合效率的不同趋势

据报道，近几十年来，广泛的绿化和不断增加的全球陆地碳汇。然而，植被绿度与生产力之间的时空关系以及影响这种关系的因素仍不清楚。我们定义了一个新的生态系统尺度光合效率 (EPE) 指标来分析其时空模式，并研究潜在驱动因素如何调节绿色-生产力关系。