Global distribution of groundwater-vegetation spatial covariation

Sujan Koirala, Martin Jung, Markus Reichstein, Inge E.M. de Graaf, Gustau Camps-Valls, Kazuhito Ichii, Dario Papale, Botond Ráduly, Christopher R Schwalm, Gianluca Tramontana, Nuno Carvalhais

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Groundwater is an integral component of the water cycle, and it also influences the carbon cycle by supplying moisture to ecosystems. However, the extent and determinants of groundwater-vegetation interactions are poorly understood at the global scale. Using several high-resolution data products, we show that the spatial patterns of ecosystem gross primary productivity and groundwater table depth are correlated during at least one season in more than two thirds of the global vegetated area. Positive relationships, i.e., larger productivity under shallower groundwater table, predominate in moisture-limited dry to mesic conditions with herbaceous and shrub vegetation. Negative relationships, i.e., larger productivity under deeper groundwater, predominate in humid climates with forests, possibly indicating a drawdown of groundwater table due to substantial ecosystem water use. Interestingly, these opposite groundwater-vegetation interactions are primarily associated with differences in vegetation than with climate and surface characteristics. These findings put forth the first evidence, and a need for better representation, of extensive and non-negligible groundwater-vegetation interactions at the global scale.

Original languageEnglish (US)
Pages (from-to)4134-4142
Number of pages9
JournalGeophysical Research Letters
Volume44
Issue number9
DOIs
StatePublished - May 16 2017

Fingerprint

ground water
vegetation
groundwater
ecosystems
productivity
moisture
climate
ecosystem
carbon cycle
hydrological cycle
data products
distribution
supplying
interactions
drawdown
determinants
water use
shrub
high resolution
water

Keywords

  • ecohydrological patterns
  • ecosystem
  • groundwater
  • plant productivity
  • spatial covariation

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

Koirala, S., Jung, M., Reichstein, M., de Graaf, I. E. M., Camps-Valls, G., Ichii, K., ... Carvalhais, N. (2017). Global distribution of groundwater-vegetation spatial covariation. Geophysical Research Letters, 44(9), 4134-4142. https://doi.org/10.1002/2017GL072885

Global distribution of groundwater-vegetation spatial covariation. / Koirala, Sujan; Jung, Martin; Reichstein, Markus; de Graaf, Inge E.M.; Camps-Valls, Gustau; Ichii, Kazuhito; Papale, Dario; Ráduly, Botond; Schwalm, Christopher R; Tramontana, Gianluca; Carvalhais, Nuno.

In: Geophysical Research Letters, Vol. 44, No. 9, 16.05.2017, p. 4134-4142.

Research output: Contribution to journalArticle

Koirala, S, Jung, M, Reichstein, M, de Graaf, IEM, Camps-Valls, G, Ichii, K, Papale, D, Ráduly, B, Schwalm, CR, Tramontana, G & Carvalhais, N 2017, 'Global distribution of groundwater-vegetation spatial covariation', Geophysical Research Letters, vol. 44, no. 9, pp. 4134-4142. https://doi.org/10.1002/2017GL072885
Koirala S, Jung M, Reichstein M, de Graaf IEM, Camps-Valls G, Ichii K et al. Global distribution of groundwater-vegetation spatial covariation. Geophysical Research Letters. 2017 May 16;44(9):4134-4142. https://doi.org/10.1002/2017GL072885
Koirala, Sujan ; Jung, Martin ; Reichstein, Markus ; de Graaf, Inge E.M. ; Camps-Valls, Gustau ; Ichii, Kazuhito ; Papale, Dario ; Ráduly, Botond ; Schwalm, Christopher R ; Tramontana, Gianluca ; Carvalhais, Nuno. / Global distribution of groundwater-vegetation spatial covariation. In: Geophysical Research Letters. 2017 ; Vol. 44, No. 9. pp. 4134-4142.
@article{8dfe66e0feb745db8f5fcc3262736a27,
title = "Global distribution of groundwater-vegetation spatial covariation",
abstract = "Groundwater is an integral component of the water cycle, and it also influences the carbon cycle by supplying moisture to ecosystems. However, the extent and determinants of groundwater-vegetation interactions are poorly understood at the global scale. Using several high-resolution data products, we show that the spatial patterns of ecosystem gross primary productivity and groundwater table depth are correlated during at least one season in more than two thirds of the global vegetated area. Positive relationships, i.e., larger productivity under shallower groundwater table, predominate in moisture-limited dry to mesic conditions with herbaceous and shrub vegetation. Negative relationships, i.e., larger productivity under deeper groundwater, predominate in humid climates with forests, possibly indicating a drawdown of groundwater table due to substantial ecosystem water use. Interestingly, these opposite groundwater-vegetation interactions are primarily associated with differences in vegetation than with climate and surface characteristics. These findings put forth the first evidence, and a need for better representation, of extensive and non-negligible groundwater-vegetation interactions at the global scale.",
keywords = "ecohydrological patterns, ecosystem, groundwater, plant productivity, spatial covariation",
author = "Sujan Koirala and Martin Jung and Markus Reichstein and {de Graaf}, {Inge E.M.} and Gustau Camps-Valls and Kazuhito Ichii and Dario Papale and Botond R{\'a}duly and Schwalm, {Christopher R} and Gianluca Tramontana and Nuno Carvalhais",
year = "2017",
month = "5",
day = "16",
doi = "10.1002/2017GL072885",
language = "English (US)",
volume = "44",
pages = "4134--4142",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "9",

}

TY - JOUR

T1 - Global distribution of groundwater-vegetation spatial covariation

AU - Koirala, Sujan

AU - Jung, Martin

AU - Reichstein, Markus

AU - de Graaf, Inge E.M.

AU - Camps-Valls, Gustau

AU - Ichii, Kazuhito

AU - Papale, Dario

AU - Ráduly, Botond

AU - Schwalm, Christopher R

AU - Tramontana, Gianluca

AU - Carvalhais, Nuno

PY - 2017/5/16

Y1 - 2017/5/16

N2 - Groundwater is an integral component of the water cycle, and it also influences the carbon cycle by supplying moisture to ecosystems. However, the extent and determinants of groundwater-vegetation interactions are poorly understood at the global scale. Using several high-resolution data products, we show that the spatial patterns of ecosystem gross primary productivity and groundwater table depth are correlated during at least one season in more than two thirds of the global vegetated area. Positive relationships, i.e., larger productivity under shallower groundwater table, predominate in moisture-limited dry to mesic conditions with herbaceous and shrub vegetation. Negative relationships, i.e., larger productivity under deeper groundwater, predominate in humid climates with forests, possibly indicating a drawdown of groundwater table due to substantial ecosystem water use. Interestingly, these opposite groundwater-vegetation interactions are primarily associated with differences in vegetation than with climate and surface characteristics. These findings put forth the first evidence, and a need for better representation, of extensive and non-negligible groundwater-vegetation interactions at the global scale.

AB - Groundwater is an integral component of the water cycle, and it also influences the carbon cycle by supplying moisture to ecosystems. However, the extent and determinants of groundwater-vegetation interactions are poorly understood at the global scale. Using several high-resolution data products, we show that the spatial patterns of ecosystem gross primary productivity and groundwater table depth are correlated during at least one season in more than two thirds of the global vegetated area. Positive relationships, i.e., larger productivity under shallower groundwater table, predominate in moisture-limited dry to mesic conditions with herbaceous and shrub vegetation. Negative relationships, i.e., larger productivity under deeper groundwater, predominate in humid climates with forests, possibly indicating a drawdown of groundwater table due to substantial ecosystem water use. Interestingly, these opposite groundwater-vegetation interactions are primarily associated with differences in vegetation than with climate and surface characteristics. These findings put forth the first evidence, and a need for better representation, of extensive and non-negligible groundwater-vegetation interactions at the global scale.

KW - ecohydrological patterns

KW - ecosystem

KW - groundwater

KW - plant productivity

KW - spatial covariation

UR - http://www.scopus.com/inward/record.url?scp=85018872474&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85018872474&partnerID=8YFLogxK

U2 - 10.1002/2017GL072885

DO - 10.1002/2017GL072885

M3 - Article

VL - 44

SP - 4134

EP - 4142

JO - Geophysical Research Letters

JF - Geophysical Research Letters

SN - 0094-8276

IS - 9

ER -