Fri Apr 10, F. Flechtner
• Sorted by Date • Sorted by Last Name of First Author •
Xing, Yuanxiao, Wang, Shunsheng, Wang, Aili, and Wang, Donglin, 2026. Spatiotemporal dynamics of meteorological and groundwater droughts in Southwest China and their cumulative and lagged impacts on vegetation. Journal of Hydrology, 669:135086, doi:10.1016/j.jhydrol.2026.135086.
• from the NASA Astrophysics Data System • by the DOI System •
@ARTICLE{2026JHyd..66935086X,
author = {{Xing}, Yuanxiao and {Wang}, Shunsheng and {Wang}, Aili and {Wang}, Donglin},
title = "{Spatiotemporal dynamics of meteorological and groundwater droughts in Southwest China and their cumulative and lagged impacts on vegetation}",
journal = {Journal of Hydrology},
keywords = {Drought, GRACE, NDVI, Cumulative effect, Lag effect, Karst region},
year = 2026,
month = apr,
volume = {669},
eid = {135086},
pages = {135086},
abstract = "{Drought is one of the most severe natural challenges in Southwest China,
where complex karst hydrogeological conditions exacerbate its
impacts on vegetation ecosystems. However, the mechanisms by
which different drought types affect vegetation in this region
remain unclear. This study integrated multiple datasets (GRACE,
GLDAS, SPEI, and MODIS NDVI) to investigate the spatiotemporal
evolution of meteorological drought, groundwater drought, and
vegetation conditions across Southwest China from 2004 to 2023.
Pearson correlation analysis was applied to quantify the
cumulative and lag effects of the two drought types on
vegetation in karst and non-karst areas. The results revealed
that: (1) GRACE- and GLDAS-derived terrestrial water storage
anomalies exhibited consistent patterns in Southwest China (r =
0.86, P < 0.001); (2) both drought types showed a slight overall
alleviation, yet drought intensification remained pronounced in
the western high-altitude areas; (3) compared with cumulative
effects, the lag effects of drought appeared to be relatively
more pronounced; and (4) vegetation in karst regions responded
more rapidly to groundwater drought, while shallow-rooted
grasslands were more sensitive to the cumulative effects of
meteorological drought, with a typical response time of
approximately one month. These findings provide valuable
insights for drought monitoring and ecological conservation in
ecologically fragile regions and offer new scientific evidence
for understanding drought─vegetation interactions in both karst
and non-karst landscapes.}",
doi = {10.1016/j.jhydrol.2026.135086},
adsurl = {https://ui.adsabs.harvard.edu/abs/2026JHyd..66935086X},
adsnote = {Provided by the SAO/NASA Astrophysics Data System}
}
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