Flash drought drives rapid vegetation stress in arid regions in Europe
- 주제(키워드) flash drought , soil moisture , ecosystem , gross primary production , leaf area index , climate regime
- 주제(기타) Environmental Sciences; Meteorology & Atmospheric Sciences
- 설명문(일반) [Sungmin, O.; Park, Seon Ki] Ewha Womans Univ, Dept Climate & Energy Syst Engn, Seoul, South Korea; [Park, Seon Ki] Ewha Womans Univ, Ctr Climate Environm Change Predict Res, Seoul, South Korea; [Park, Seon Ki] Ewha Womans Univ, Severe Storm Res Ctr, Seoul, South Korea
- 관리정보기술 faculty
- 등재 SCIE, SCOPUS
- 발행기관 IOP Publishing Ltd
- 발행년도 2023
- URI http://www.dcollection.net/handler/ewha/000000205850
- 본문언어 영어
- Published As https://doi.org/10.1088/1748-9326/acae3a
초록/요약
Flash droughts are characterised by rapid onset, combined with the potential to severely impact agriculture and ecosystems. However, assessments of the ecological impacts of flash droughts, especially in Europe, are largely lacking. Here we investigate ecosystem responses to flash droughts in Europe between 2001 and 2019 using diverse observational data, including gross primary production (GPP) and leaf area index (LAI). We find that in arid regions an abrupt transition to water-stressed conditions occurs within a few weeks, which negatively affects vegetation status and reduces carbon uptake in the initial stages of drought; normalised anomalies of LAI and GPP decrease to about -0.5. By contrast, vegetation in humid regions is not as severely affected, given that soil moisture recovers relatively quickly. We also show that soil moisture status before the onset of drought significantly impacts the timing (1-5 pentads) and degree (-0.33 to -0.71 of normalised LAI and GPP anomalies) of drought-induced vegetation stress, particularly in arid regions. Our results highlight the regional characteristics of flash drought impacts for more informative monitoring and early warning systems.
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