Global gross primary productivity and water use efficiency changes under drought stress

Drought can affect the structure, composition and function of terrestrial ecosystems, yet drought impacts and post-drought recovery potentials of different land cover types have not been extensively studied at a global scale. We evaluated drought impacts on gross primary productivity (GPP), evapotra...

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Bibliographic Details
Published in:Environmental research letters 2017-01, Vol.12 (1), p.14016
Main Authors: Yu, Zhen, Wang, Jingxin, Liu, Shirong, Rentch, James S, Sun, Pengsen, Lu, Chaoqun
Format: Article
Language:English
Subjects:
climate change
Coniferous forests
Drought
Ecosystem resilience
Efficiency
Environmental impact
Evapotranspiration
gross primary productivity
Land cover
Latitude
length of recovery days
Northern Hemisphere
Productivity
Recovery
Reduction
Resilience
Savannahs
Southern Hemisphere
Structure-function relationships
Terrestrial ecosystems
Tropical environment
Tropical environments
Water use
Water use efficiency
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Summary:Drought can affect the structure, composition and function of terrestrial ecosystems, yet drought impacts and post-drought recovery potentials of different land cover types have not been extensively studied at a global scale. We evaluated drought impacts on gross primary productivity (GPP), evapotranspiration (ET), and water use efficiency (WUE) of different global terrestrial ecosystems, as well as the drought-resilience of each ecosystem type during the period of 2000 to 2011. Using GPP as biome vitality indicator against drought stress, we developed a model to examine ecosystem resilience represented by the length of recovery days (LRD). LRD presented an evident gradient of high (>60 days) in mid-latitude region and low (
ISSN:1748-9326
1748-9326
DOI:10.1088/1748-9326/aa5258