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Drought footprint on E uropean ecosystems between 1999 and 2010 assessed by remotely sensed vegetation phenology and productivity
Author(s) -
Ivits Eva,
Horion Stephanie,
Fensholt Rasmus,
Cherlet Michael
Publication year - 2014
Publication title -
global change biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.146
H-Index - 255
eISSN - 1365-2486
pISSN - 1354-1013
DOI - 10.1111/gcb.12393
Subject(s) - ecosystem , phenology , vegetation (pathology) , normalized difference vegetation index , productivity , growing season , environmental science , climate change , physical geography , ecology , geography , biology , medicine , macroeconomics , pathology , economics
Drought affects more people than any other natural disaster but there is little understanding of how ecosystems react to droughts. This study jointly analyzed spatio‐temporal changes of drought patterns with vegetation phenology and productivity changes between 1999 and 2010 in major E uropean bioclimatic zones. The S tandardized P recipitation and E vapotranspiration I ndex ( SPEI ) was used as drought indicator whereas changes in growing season length and vegetation productivity were assessed using remote sensing time‐series of N ormalized D ifference V egetation I ndex ( NDVI ). Drought spatio‐temporal variability was analyzed using a P rincipal C omponent A nalysis, leading to the identification of four major drought events between 1999 and 2010 in E urope. C orrespondence A nalysis showed that at the continental scale the productivity and phenology reacted differently to the identified drought events depending on ecosystem and land cover. N orthern and M editerranean ecosystems proved to be more resilient to droughts in terms of vegetation phenology and productivity developments. W estern A tlantic regions and E astern E urope showed strong agglomerations of decreased productivity and shorter vegetation growing season length, indicating that these ecosystems did not buffer the effects of drought well. In a climate change perspective, increase in drought frequency or intensity may result in larger impacts over these ecosystems, thus management and adaptation strategies should be strengthened in these areas of concerns.