Global patterns of water storage in the rooting zones of vegetation. Stocker, B. D., Tumber-Dávila, S. J., Konings, A. G., Anderson, M. C., Hain, C., & Jackson, R. B. Nature Geoscience, 16(3):250–256, February, 2023. ![Global patterns of water storage in the rooting zones of vegetation [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The rooting-zone water-storage capacity—the amount of water accessible to plants—controls the sensitivity of land–atmosphere exchange of water and carbon during dry periods. How the rooting-zone water-storage capacity varies spatially is largely unknown and not directly observable. Here we estimate rooting-zone water-storage capacity globally from the relationship between remotely sensed vegetation activity, measured by combining evapotranspiration, sun-induced fluorescence and radiation estimates, and the cumulative water deficit calculated from daily time series of precipitation and evapotranspiration. Our findings indicate plant-available water stores that exceed the storage capacity of 2-m-deep soils across 37% of Earth’s vegetated surface. We find that biome-level variations of rooting-zone water-storage capacities correlate with observed rooting-zone depth distributions and reflect the influence of hydroclimate, as measured by the magnitude of annual cumulative water-deficit extremes. Smaller-scale variations are linked to topography and land use. Our findings document large spatial variations in the effective root-zone water-storage capacity and illustrate a tight link among the climatology of water deficits, rooting depth of vegetation and its sensitivity to water stress.
@article{stocker_global_2023,
title = {Global patterns of water storage in the rooting zones of vegetation},
volume = {16},
copyright = {2023 The Author(s)},
issn = {1752-0908},
url = {https://www.nature.com/articles/s41561-023-01125-2},
doi = {10.1038/s41561-023-01125-2},
abstract = {The rooting-zone water-storage capacity—the amount of water accessible to plants—controls the sensitivity of land–atmosphere exchange of water and carbon during dry periods. How the rooting-zone water-storage capacity varies spatially is largely unknown and not directly observable. Here we estimate rooting-zone water-storage capacity globally from the relationship between remotely sensed vegetation activity, measured by combining evapotranspiration, sun-induced fluorescence and radiation estimates, and the cumulative water deficit calculated from daily time series of precipitation and evapotranspiration. Our findings indicate plant-available water stores that exceed the storage capacity of 2-m-deep soils across 37\% of Earth’s vegetated surface. We find that biome-level variations of rooting-zone water-storage capacities correlate with observed rooting-zone depth distributions and reflect the influence of hydroclimate, as measured by the magnitude of annual cumulative water-deficit extremes. Smaller-scale variations are linked to topography and land use. Our findings document large spatial variations in the effective root-zone water-storage capacity and illustrate a tight link among the climatology of water deficits, rooting depth of vegetation and its sensitivity to water stress.},
language = {en},
number = {3},
urldate = {2023-07-13},
journal = {Nature Geoscience},
author = {Stocker, Benjamin D. and Tumber-Dávila, Shersingh Joseph and Konings, Alexandra G. and Anderson, Martha C. and Hain, Christopher and Jackson, Robert B.},
month = feb,
year = {2023},
keywords = {Freshwater, Natural Capital, Precourt, SDSS},
pages = {250--256},
}
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