Response of runoff and its components to climate change and its future trend in the source region of the Yangtze River

Hydrological Processes, Journal Year: 2024, Volume and Issue: 38(6)

Published: June 1, 2024

Abstract Under global climate changes, the temperature and precipitation on Tibetan Plateau changed significantly, causing accelerated melting of glaciers snow changes in runoff. The response runoff its components to change is important for water resource management ecology conservation region. Therefore, Spatial Processes Hydrology model, a distributed cold‐zone hydrological model that contains glacial ablation module, was used simulate Yangtze River source located middle during 2000–2050, Nash‐Sutcliffe efficiency coefficient, relative error coefficient determination ( R 2 ) calibration period validation revealed performed well most years. results showed rainfall contributed total (61%), followed by baseflow (23%), snowmelt (12%) glacier (4%) 2000–2020. amounts three rivers, Dangqu River, Tuotuo Chumar accounted approximately 53% basin, with (52%) contributing (6%) least. Compared contributions (9%) (7%), proportion small (1%). CMIP6 mean depth predicted increase 13.5 mm from 2020 2050 compared 2000 2020.

Language: Английский

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Estimates of net primary productivity and actual evapotranspiration over the Tibetan Plateau from the Community Land Model version 4.5 with four atmospheric forcing datasets

Journal of Plant Ecology, Journal Year: 2024, Volume and Issue: 17(4)

Published: June 11, 2024

Abstract The accuracy of the simulation carbon and water processes largely relies on selection atmospheric forcing datasets when driving land surface models (LSM). Particularly in high-altitude regions, choosing appropriate can effectively reduce uncertainties LSM simulations. Therefore, this study conducted four offline simulations over Tibetan Plateau (TP) using Community Land Model version 4.5 (CLM4.5) driven by state-of-the-art datasets. performances CRUNCEP (CLM4.5 model default) three other reanalysis-based (i.e. ITPCAS, GSWP3 WFDEI) simulating net primary productivity (NPP) actual evapotranspiration (ET) were evaluated based situ gridded reference Compared with observations, simulated results exhibited determination coefficients (R2) ranging from 0.58 to 0.84 0.59 0.87 for observed NPP ET, respectively, among which ITPCAS showed superior performance. At plateau level, CRUNCEP-based displayed largest bias compared ET. GSWP3-based demonstrated best performance comprehensively considering both magnitudes change trends TP-averaged ET increase TP during 1982–2010 was significantly greater than suggesting that may not be studying long-term changes TP. These suggest is recommended CLM4.5 conducting This contributes enhancing water–carbon alpine regions.

Language: Английский

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Non-consistent changes and drivers of water-sediment fluxes in the Yarlung Tsangpo River basin of the Tibetan Plateau

International Soil and Water Conservation Research, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

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Potential impact of precipitation temporal structure on meteorological drought and vegetation condition: A case study on Qinghai-Tibet Plateau

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 56, P. 102048 - 102048

Published: Nov. 8, 2024

Language: Английский

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Stable isotopes reveal the water conversion and transition dynamics in a heavily-polluted plateau marginal basin: implications for aquatic ecosystem protection

Process Safety and Environmental Protection, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

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