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Water resources remain sustainable in global revegetated regions

Abstract:

Intense debate surrounds the question of whether transpiration from revegetated regions may exacerbate water shortages globally. Using outputs from 20 CMIP6 models for 1982–2016 and 2030–2100 alongside observations, we find that the water resources remaining after subtracting increased evapotranspiration from rainfall and meltwater from snow and glaciers exceeded human usage during 1982–2016 across almost three quarters (72.2%) of global revegetated regions. CMIP6 projections for 2030–2100 indicate that human water demand is likely to be met in 79.4% of revegetated regions, but India and Oceania warrant attention because of possible precipitation decline and/or population growth. Approximately 1.6% of currently bare regions (40.6 × 104 km2) in Canada, Central Asia, and the fringes of deserts have adequate water for revegetation over 2030–2100. These findings underscore the necessity of strategic water management and monitoring in revegetated areas to balance ecological benefits with human water needs.

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.scib.2025.10.039

Authors

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Institution:
University of Oxford
Division:
SSD
Department:
SOGE
Sub department:
Geography
Role:
Author
ORCID:
0000-0001-9416-488X


More from this funder
Funder identifier:
10.13039/501100001809
Grant:
U24A20572
More from this funder
Funder identifier:
10.13039/501100012166
Grant:
2024YFF0809301
More from this funder
Funder identifier:
10.13039/501100007046


Publisher:
Elsevier
Journal:
Science Bulletin More from this journal
Volume:
70
Issue:
23
Pages:
4080-4090
Publication date:
2025-10-27
Acceptance date:
2025-09-09
DOI:
EISSN:
2095-9281
ISSN:
2095-9273
Pmid:
41203483


Language:
English
Keywords:
Pubs id:
2321038
Local pid:
pubs:2321038
Deposit date:
2026-02-10
ARK identifier:

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