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DOI	10.5194/bg-17-2647-2020
	Large-scale biospheric drought response intensifies linearly with drought duration in arid regions
	Orth, Rene 1; Destouni, Georgia 2; Jung, Martin 1; Reichstein, Markus 1
通讯作者	Orth, Rene
来源期刊	BIOGEOSCIENCES
ISSN	1726-4170
EISSN	1726-4189
出版年	2020
卷号	17 期号:9 页码:2647-2656
英文摘要	Soil moisture droughts have comprehensive implications for terrestrial ecosystems. Here we study time-accumulated impacts of the strongest observed droughts on vegetation. The results show that drought duration, the time during which surface soil moisture is below seasonal average, is a key diagnostic variable for predicting drought-integrated changes in (i) gross primary productivity, (ii) evapotranspiration, (iii) vegetation greenness, and (iv) crop yields. Drought-integrated anomalies in these vegetation-related variables scale linearly with drought duration with a slope depending on climate. In arid regions, the slope is steep such that vegetation drought response intensifies with drought duration, whereas in humid regions, it is small such that drought impacts on vegetation are weak even for long droughts. These emergent large-scale linearities are not well captured by state-of-the-art hydrological, land surface, and vegetation models. Overall, the linear relationship of drought duration versus vegetation response and crop yield reductions can serve as a model benchmark and support drought impact interpretation and prediction.
类型	Article
语种	英语
国家	Germany ; Sweden
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000535271400004
WOS关键词	SOIL-MOISTURE ; CLIMATE EXTREMES
WOS类目	Ecology ; Geosciences, Multidisciplinary
WOS研究方向	Environmental Sciences & Ecology ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319101
作者单位	1.Max Planck Inst Biogeochem, Dept Biogeochem Integrat, D-07745 Jena, Germany; 2.Stockholm Univ, Bolin Ctr Climate Res, Dept Phys Geog, S-10691 Stockholm, Sweden
推荐引用方式 GB/T 7714	Orth, Rene,Destouni, Georgia,Jung, Martin,et al. Large-scale biospheric drought response intensifies linearly with drought duration in arid regions[J],2020,17(9):2647-2656.
APA	Orth, Rene,Destouni, Georgia,Jung, Martin,&Reichstein, Markus.(2020).Large-scale biospheric drought response intensifies linearly with drought duration in arid regions.BIOGEOSCIENCES,17(9),2647-2656.
MLA	Orth, Rene,et al."Large-scale biospheric drought response intensifies linearly with drought duration in arid regions".BIOGEOSCIENCES 17.9(2020):2647-2656.