Drought propagation characteristics across China: Time, probability, and threshold

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 631, P. 130805 - 130805

Published: Jan. 29, 2024

Language: Английский

---

Vegetation Greening and Climate Warming Increased the Propagation Risk From Meteorological Drought to Soil Drought at Subseasonal Timescales

Geophysical Research Letters, Journal Year: 2024, Volume and Issue: 51(4)

Published: Feb. 20, 2024

Abstract Subseasonal droughts including flash have occurred frequently in recent years, which are accompanied by heatwaves or wildfires that raise a wide concern on environmental risk. However, the changing characteristics of subseasonal drought propagation, and possible climate drivers remain unknown. This study quantifies propagation from meteorological to soil using Copula‐based Bayesian framework, shows higher risks mainly occur more humid regions with denser vegetation cover. Trends risk vary regionally, global increase 2%/decade ( p < 0.01) during 1980–2022. Vegetation greening warming key over >71% vegetated lands, mean contribution rates 39.5% 36.5% respectively. Other climatic factors vapor pressure deficit precipitation also paly critical roles, closely correlate temperature vegetation. These findings highlight importance dynamics.

Language: Английский

---

Drought-tolerant plant growth-promoting rhizobacteria alleviate drought stress and enhance soil health for sustainable agriculture: A comprehensive review

Plant Stress, Journal Year: 2024, Volume and Issue: 14, P. 100632 - 100632

Published: Oct. 6, 2024

Language: Английский

---

Drought Dynamics in the Nile River Basin: Meteorological, Agricultural, and Groundwater Drought Propagation

Remote Sensing, Journal Year: 2024, Volume and Issue: 16(5), P. 919 - 919

Published: March 6, 2024

The Nile River Basin (NRB) has experienced a notable rise in drought episodes recent decades. propagation of meteorological, agricultural, and groundwater dynamics the NRB was investigated this study. following indices examined correlation among droughts. These are standardized precipitation evapotranspiration index (SPEI), soil moisture index, Gravity Recovery Climate Experiment, GRACE Follow-On (GRACE/GRACE-FO)-derived (GGDI). droughts were comprehensively evaluated from 2003 to 2022. cross-wavelet transform approach highlighted links between key findings: (1) In NRB, energy spectrum wavelet coherence can indicate internal connection meteorological versus (vs.) agricultural drought. time scale with most significant coefficient is time. (2) El Niño–Southern Oscillation (ENSO) correlated much more than Indian Ocean Dipole (IOD), demonstrating that ENSO an important impact on advancement. (3) R2 values 0.68 for GGDI vs. (SSI), 0.71 Blue Region (BNR) SSI, 0.55 SSI Standardized Precipitation Evapotranspiration Index (SPEI). Similarly, Lake Victoria (LVR), 0.51 SPEI 0.55, but Bahr-el-Ghazal (BER), 0.61 0.27 during whole research period varied lag durations ranging 1 6 months. Thus, (i.e., drought) potential reshape our understanding evolution, which could lead early forecasting across similar climatic regions.

Language: Английский

---

Incorporation crisis lifecycle theory into full-stage flash drought spatio-temporal pattern identification and risk analysis

Journal of Hydrology, Journal Year: 2024, Volume and Issue: 642, P. 131828 - 131828

Published: Aug. 17, 2024

Language: Английский

---

The propagation from atmospheric flash drought to soil flash drought and its changes in a warmer climate

Journal of Hydrology, Journal Year: 2025, Volume and Issue: unknown, P. 132877 - 132877

Published: Feb. 1, 2025

Language: Английский

---

Effects of temperature and precipitation on drought trends in Xinjiang, China

Journal of Arid Land, Journal Year: 2024, Volume and Issue: 16(8), P. 1098 - 1117

Published: Aug. 1, 2024

Language: Английский

---

Evolution of drought characteristics and propagation from meteorological to agricultural drought under the influences of climate change and human activities

Environmental Science and Pollution Research, Journal Year: 2024, Volume and Issue: 31(18), P. 26713 - 26736

Published: March 8, 2024

Language: Английский

---

Exogenous melatonin improves cotton yield under drought stress by enhancing root development and reducing root damage

Journal of Integrative Agriculture, Journal Year: 2024, Volume and Issue: 23(10), P. 3387 - 3405

Published: April 11, 2024

The exogenous application of melatonin by the root drenching method is an effective way to improve crop drought resistance. However, optimal concentration and physiological mechanisms underlying melatonin-induced tolerance in cotton (Gossypium hirsutum L.) roots remain elusive. This study determined explored protective effects on roots. results showed that 50 μmol L−1 was significantly mitigated inhibitory effect seedling growth. Exogenous promoted development drought-stressed plants remarkably increasing length, projected area, surface volume, diameter, biomass. Melatonin also drought-weakened photosynthetic capacity regulated endogenous hormone contents regulating relative expression levels hormone-synthesis genes under stress. Melatonin-treated seedlings maintained enzymatic non-enzymatic antioxidant capacities, produced relatively lower reactive oxygen species malondialdehyde, thus reducing stress damage (such as mitochondrial damage). Moreover, alleviated yield fiber length declines caused Taken together, these findings show with increases enhancing induced In summary, provide a foundation for field method.

Language: Английский

---

Comparison of Flash Drought and Traditional Drought on Characteristics and Driving Forces in Xinjiang

Remote Sensing, Journal Year: 2023, Volume and Issue: 15(19), P. 4758 - 4758

Published: Sept. 28, 2023

In the context of climate warming, flash drought has become increasingly frequent, posing significant threats to agriculture, ecosystems, and environment. Xinjiang, located in an arid semi-arid region, necessitates a thorough investigation into distinctions between traditional drought, as well exploration driving forces behind both types drought. this study, soil moisture data from ERA5-Land were utilized construct framework for identification based on historical events. The Geodetector was employed explore factors that influence spatial heterogeneity these two forms. findings illuminate (1) terms distribution, predominated southern while exhibited greater prominence northern Xinjiang. (2) Regarding changes trends, increasing trend frequency since 1990s, with passing significance test (α ≤ 0.05). Additionally, severity displayed noteworthy statistically increase within sliding windows ranging 46 62 years. (3) Concerning forces, precipitation emerged principal force Furthermore, human activities exerted more substantial interactions involving had potential significantly amplify explanatory power types. (4) risk, notable variation risk observed across various ecological zones, highest occurring mildly fragile zones. when comparing results 1995 2019, marked severely This study enriches understanding dynamics Xinjiang carries important implications enhancing precision monitoring early warning systems.

Language: Английский

---