| 英文摘要： |
Ecosystem stability is the key to maintain the normal service function of the earth, but the dimensionalities and drivers of stability are highly controversial. A global study on the components of stability, including temporal stability, resistance, and resilience, was analyzed by gross productive production of 130 flux sites, species richness, and climate variables such as precipitation, air temperature, and shortwave radiation over a 24-year period from 1991 to 2014. Our results provided global-scale evidence that ecosystem stability must be analyzed as a multidimensional construct, and biome-specific dimensionality should be considered in exploring ecosystem stability. The effective dimensionalities of ecosystem stability were significantly different among biomes, showing the least in savannas and the most in wetlands. In addition, the climate was predicted to be more important than biodiversity in regulating ecosystem stability on a global scale. The result showed that climates explained up to 70%, 49%, and 39% of the variation in temporal stability, resistance, and resilience of ecosystem function, respectively, while species richness only explained up to 5%, 20%, -11%. These findings give a comprehensive assessment for stability at the global scale and highlight the key role of climate in regulating ecosystem stability. |
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