Ecosystem carbon use efficiency (CUEe) is a core parameter of ecosystem process models, but its relationships with climate are still uncertain, especially for ecosystems with harsh environments. Large inconsistencies in climate impacts on the CUEe have been reported among various spatial scales. The goal of this study was to examine whether warming promotes or restricts the CUEe and whether the CUEe responds to a warming gradient in a linear or nonlinear manner.

中文翻译：

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变暖对青藏高原草地生态系统碳利用效率的多尺度负面影响

生态系统的碳使用效率（CUEe）是生态系统过程模型的核心参数，但其与气候的关系仍然不确定，尤其是对于环境恶劣的生态系统。据报道，在各种空间尺度上，气候对CUEe的影响存在很大的不一致。这项研究的目的是研究变暖是促进还是限制了CUEe，以及CUEe是对线性梯度还是非线性非线性响应。