Snow cover expansion with contrasting depth thinning in the recent 40 years: Evidence from the Yalong River Basin, South-eastern Tibetan Plateau

Journal of Hydrology Regional Studies, Год журнала: 2024, Номер 53, С. 101786 - 101786

Опубликована: Апрель 18, 2024

Yalong River Basin, Southeastern Tibetan Plateau, China. The spatio-temporal variability of snow characteristics are important indicators climate change. Based on statistical analyses remote sensing data from 1979 to 2018, this study explored changes and parameters in the basin. This region has, despite rapidly changing ambient conditions, not previously been investigated at current level detail, including multiple snow-related variables. We show that average depth (SD) decreased over considered 40-year period, while covered days showed an opposite, increasing trend. pattern was attributed a combined effect gradually earlier arrival first later last snow, with overall more frequent occurrence instantaneous cover. Such short-duration events likely linked regionally precipitation amounts intensities event basis can outweigh melting effects increased temperatures. results furthermore underscored high degree heterogeneity within basin, least SD, which decreases 27 % increases 73 These findings have crucial implications for energy budgets frozen season length raising questions about prevalence similar dynamics across plateau.

Язык: Английский

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Dispersal Limitation Dominates Riverine Fish Communities in the Areas of the Water Diversion Project in the Western Sichuan Plateau, China

Animals, Год журнала: 2025, Номер 15(5), С. 730 - 730

Опубликована: Март 4, 2025

The riverine fish species are highly vulnerable and responsive to large-scale water diversion projects. These adverse impacts more pronounced in the plateau river ecosystems, which may change environmental conditions of habitats community structure. We investigated effects various factors on diversity seven rivers Western Sichuan Plateau, is planned area China's South-to-North Water Diversion Project. Twenty-two species, including eight exotic were collected during September 2023 (Autumn) May 2024 (Spring). communities exhibited no significant difference between seasons but had prominent variations among different rivers. heterogeneity was significantly positively correlated with geographical distance sampling sites (based a projected coordinate system). Furthermore, canonical correspondence analysis (CCA) illustrated that altitude contributed distribution than other physicochemical factors, such as channel width, conductivity, temperature. Rivers at low altitudes likely be invasion fish. Our results demonstrated dispersal limitation by altitudinal gradient primary regulatory spatial differentiation study area, reflected high dependence local habitats. As project implemented, attention expected paid protecting regime shifts communities. Additionally, risk assessment biological under inter-basin transfers human activities should carried out soon possible.

Язык: Английский

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Comprehensive Drought Risk Assessment and its driving mechanism for the water source area of the Western Route of South-to-North Water Diversion Project in China

International Journal of Disaster Risk Reduction, Год журнала: 2025, Номер unknown, С. 105423 - 105423

Опубликована: Март 1, 2025

Язык: Английский

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An experimental study of the water-holding and strength characteristics of unsaturated canal embankment soils in the South-to-North water diversion project

Frontiers in Earth Science, Год журнала: 2025, Номер 13

Опубликована: Май 2, 2025

The water-holding and strength characteristics of unsaturated expansive soil modified in a high-fill canal embankment along the central line South-to-North Water Diversion Project were investigated using pressure plate apparatus GDS triaxial test system. soil-water characteristic curves (SWCCs) obtained by curve-fitting results tests, thereby revealing distinctions two types. laws governing effects matrix suction on stress-strain relationships shear types explored through drainage tests. According to results: (1) moisture content void ratio each type decreased gradually with increase suction, although at slower rate than that soil. (2) Matrix induced transition from strain hardening softening; (3) both soils increases confining pressure, increment greater Notably, influence became progressively more significant increasing for soils; (4) cohesion internal friction angle 200 kPa as critical point rate; (5) differs under different suctions, 400 point. (6) thresholds can serve references engineering design construction, well seepage prevention slope reinforcement. This study provides technical parameters theoretical support design, long-term stability embankments Transfer site.

Язык: Английский

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Evolution of regional rainstorm events in China's South-to-North Water Diversion Area, 1960–2022

Atmospheric Research, Год журнала: 2024, Номер 309, С. 107573 - 107573

Опубликована: Июль 6, 2024

Язык: Английский

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Towards the sustainable development of water security: A new copula-based risk assessment system

Ecological Indicators, Год журнала: 2024, Номер 166, С. 112489 - 112489

Опубликована: Авг. 20, 2024

Water security is deeply intertwined with ecosystems, society and the economy, a frequent focal point of sustainable development. This study investigates water (WS) Inner Mongolia, dryland region in northern China. Specifically, an indicator system integrating principles Stability (S), Cooperation (C), Resilience (R) was constructed to quantitatively comprehensively assess security. Risk probability calculated by combining its output copula function. The findings revealed that: (1) WS-SCR levels area gradually increased from 2001 2021. periods multi-year average 0.42, which at threshold level security; (2) Based on standard deviation ellipse, spatial distribution changed northeast southwest back northeast. centroid change shifted east west east; (3) Key drivers influencing included GDP per capita (S3), agricultural irrigation consumption unit (C4), comprehensive use (C5), reclaimed rate (C8), fertilizer application farmland (R4), population density (R5); (4) S-C, S-R, C-R relationships within were best modelled Clayton function, whereas S-C-R relationship most accurately using Frank three-dimensional joint risk (S≤0.4, C≤0.4, R≤0.4) 0.226; that R insecure increasing S or C index values. provides scientific foundation for long-term planning management development Eurasian drylands.

Язык: Английский

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Investigating the Spatiotemporal Complexity of Rainfall from a Chaotic Perspective: Case Study in the Jinsha River Basin, China

Journal of Hydrologic Engineering, Год журнала: 2024, Номер 29(4)

Опубликована: Май 17, 2024

Язык: Английский

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Water transfer contributes to water resources management: Crisis mitigation for future water allocation in the Yellow River basin

iScience, Год журнала: 2024, Номер 27(9), С. 110586 - 110586

Опубликована: Июль 25, 2024

Optimizing water allocation is a crucial strategy for planning in large basins, such as the Yellow River basin. The transforming supply pattern, triggered by inter-basin transfer, urges optimization and refinement of allocation. Here, we predict future demand different sectors at provincial level carry out based on multi-objective model. results imply that "demand increases midstream deficits downstream" would persist 2050, structure highlights potential sectoral rivalry resources each province. Water transfer will be "antidote" to disputes account 19.8% 34.5% 2030 respectively. This study provides basis policymaking management establishes pattern from province

Язык: Английский

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Snow Cover Expansion with Contrasting Depth Thinning in the Recent 40 Years: Evidence from the Yalong River Basin, South-Eastern Tibetan Plateau

Опубликована: Янв. 1, 2023

Study region: Yalong River Basin, Southeastern Tibetan Plateau, China.Study focus: The spatio-temporal variability of snow characteristics are important indicators climate change. Based on statistical analyses remote sensing data from 1979 to 2018, this study explored changes and parameters in the basin, which despite rapidly changing ambient conditions, not previously been investigated at current level detail.New hydrological insights for We show that average depth (SD) decreased over considered 40-year period, while number covered days showed an opposite, increasing trend. This pattern was attributed a combined effect gradually earlier arrival first later last snow, with overall more frequent occurrence instantaneous cover. Such short-duration events likely linked regionally precipitation amounts intensities event basis can outweigh melting effects increased temeratures. results furthermore underscored high degree heterogeneity within least SD, decreases 27% but increases 73% autumn. present has implications e.g. energy budgets frozen season length raises questions also regarding current, possible future prevalence similarly complex dynamics other part plateau.

Язык: Английский

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Towards the Sustainable Development of Water Security: A New Copula-Based Risk Assessment System

Опубликована: Янв. 1, 2024

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Язык: Английский

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