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Coupling of ecosystem-scale plant water storage and leaf phenology observed by satellite
- Source :
- Nature Ecology & Evolution, Nature Ecology & Evolution, Nature, 2018, 2 (9), pp.1428-1435. ⟨10.1038/s41559-018-0630-3⟩, Dipòsit Digital de Documents de la UAB, Universitat Autònoma de Barcelona, Nature Ecology & Evolution, 2018, 2 (9), pp.1428-1435. ⟨10.1038/s41559-018-0630-3⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- International audience; Plant water storage is fundamental to the functioning of terrestrial ecosystems by participating in plant metabolism, nutrient and sugar transport, and maintenance of the integrity of the hydraulic system of the plant. However, a global view of the size and dynamics of the water pools stored in plant tissues is still lacking. Here, we report global patterns of seasonal variations in ecosystem-scale plant water storage and their relationship with leaf phenology, based on space-borne measurements of L-band vegetation optical depth. We find that seasonal variations in plant water storage are highly synchronous with leaf phenology for the boreal and temperate forests, but asynchronous for the tropical woodlands, where the seasonal development of plant water storage lags behind leaf area by up to 180 days. Contrasting patterns of the time lag between plant water storage and terrestrial groundwater storage are also evident in these ecosystems. A comparison of the water cycle components in seasonally dry tropical woodlands highlights the buffering effect of plant water storage on the seasonal dynamics of water supply and demand. Our results offer insights into ecosystem-scale plant water relations globally and provide a basis for an improved parameterization of eco-hydrological and Earth system models.
- Subjects :
- Satellite Imagery
010504 meteorology & atmospheric sciences
[SDE.MCG]Environmental Sciences/Global Changes
0211 other engineering and technologies
02 engineering and technology
01 natural sciences
Nutrient
Hydrology (agriculture)
Ecosystem
Water cycle
Ecology, Evolution, Behavior and Systematics
ComputingMilieux_MISCELLANEOUS
021101 geological & geomatics engineering
0105 earth and related environmental sciences
Hydrology
Ecology
Water storage
Water
15. Life on land
Plant ecology
Plant Leaves
13. Climate action
[SDE]Environmental Sciences
Environmental science
Terrestrial ecosystem
Seasons
Ecosystem ecology
Subjects
Details
- Language :
- English
- ISSN :
- 2397334X
- Database :
- OpenAIRE
- Journal :
- Nature Ecology & Evolution, Nature Ecology & Evolution, Nature, 2018, 2 (9), pp.1428-1435. ⟨10.1038/s41559-018-0630-3⟩, Dipòsit Digital de Documents de la UAB, Universitat Autònoma de Barcelona, Nature Ecology & Evolution, 2018, 2 (9), pp.1428-1435. ⟨10.1038/s41559-018-0630-3⟩
- Accession number :
- edsair.doi.dedup.....d958c713661ec39a6bfb33a5bfa2fef7