Articles | Volume 24, issue 11
https://doi.org/10.5194/hess-24-5579-2020
https://doi.org/10.5194/hess-24-5579-2020
Research article
 | 
24 Nov 2020
Research article |  | 24 Nov 2020

Rapid reduction in ecosystem productivity caused by flash droughts based on decade-long FLUXNET observations

Miao Zhang and Xing Yuan

Data sets

FLUXNET2015 Dataset FLUXNET https://fluxnet.fluxdata.org/data/fluxnet2015-dataset/

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Short summary
We identify flash drought events by considering the decline rate of soil moisture and the drought persistency, and we detect the response of ecosystem carbon and water fluxes to flash droughts based on FLUXNET observations. We find rapid declines in carbon assimilation within 16–24 d of flash drought onset, where savannas show the highest sensitivity. Water use efficiency increases for forests but decreases for herbaceous ecosystems during the recovery stage of flash droughts.