Interactive Changes in Climatic and Hydrological Droughts, Water Quality, and Land Use/Cover of Tajan Watershed, Northern Iran

Water, Journal Year: 2024, Volume and Issue: 16(13), P. 1784 - 1784

Published: June 24, 2024

In response to novel and complex uncertainties, the present research is conducted characterize most significant indicators of watershed health including drought, water quality, vegetation for Tajan watershed, Mazandaran, Iran. The Standardized Precipitation Index (SPI) Streamflow Drought (SDI) are, respectively, used quantify meteorological hydrological droughts in (1993–2020) future (2023–2050) employing optimistic RCP2.6 pessimistic RCP8.5 scenarios. To concoct discharge data future, IHACRES v1.0 software with a Nash–Sutcliffe coefficient (NSE) 0.48 determination (R2) 0.58. Maps land use Normalized Difference Vegetation (NDVI) are also prepared using Landsat images. Subsequently, surface quality assessed AqQA v1.1.0 software. results show difference severity different stations. addition, predominance non-drought (SDI ≥ 0) or mild drought (−1 ≤ SDI < indicated hydrology. changes decrease rangeland (−5.47%) an increase residential (9.17%). analysis indicates carbonate ions outlet. Communicating relationships between study indicators, which big gap current management approach, avoids failures catastrophes.

Language: Английский

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Response Mechanism and Simulation of Hydrological Processes to Environmental Change in Weihe River Basin

Published: Jan. 1, 2024

Climate dynamics and vegetation growth are indeed the primary factors that influence terrestrial hydrological processes. However, specific mechanisms by which these interact impact of processes not yet fully understood. This study developed a meteorological-vegetation Long Short-Term Memory (LSTM) model to forecast periodic changes in normalized difference index (NDVI) based on historical future meteorological data. A distributed was used simulate response water circulation environmental change Weihe River Basin. The results showed climate will be warmer wetter, increasing runoff hydrologic balance factors. were more influenced change. has stimulated an increase coverage, consequently leading decreases -1.78%, -1.7%, -2.4%, -7.4%, -2%, -0.4% runoff, percolation (PERC), surface (SURQ), groundwater flow (GWQ), yield (WYLD), lateral (LATQ), respectively. maximum actual evapotranspiration (ET) 0.4%. Although LAI had weaker effect cycle components, it also changed caused some extent. Due spatial variation climate, largest increases other except ET at sub-basin scale observed basin outlet Guanzhong plains PERC, GWQ, WYLD, LATQ lower than those northern plateau mountain ranges. considered combined impacts cover change, predicted trends growth, basin, quantified single evolution cycle.

Language: Английский

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Simulation and attribution analysis of runoff–sediment in the Upper Basin of Fenhe River, China

Journal of Water and Climate Change, Journal Year: 2024, Volume and Issue: 15(7), P. 2961 - 2977

Published: June 10, 2024

ABSTRACT High-precision simulation of runoff–sediment is a significant challenge due to the combined impacts climate change and human activities. In this paper, processes were simulated, their impact attribution was analyzed using Soil Water Assessment Tool (SWAT) model in upper Fenhe River basin Loess Plateau, China. A SWAT constructed assess its applicability during historical baseline period, which reflects low activity. However, results for comprehensive calibrated model, unsatisfactory. Consequently, method proposed enhance accuracy by considering presence soil-retaining dams. This incorporates large small dams as reservoirs ponds, respectively, into SWAT. The indicate that runoff sediment reaches satisfactory level. analysis show activities have greater on than change, with land use being particularly significant. construction plays more role reducing sediment. These findings provide valuable insights management utilization river basins.

Language: Английский

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Trend analysis of hydrometeorological data in Euphrates river Basin

Environmental Earth Sciences, Journal Year: 2024, Volume and Issue: 83(24)

Published: Nov. 30, 2024

Language: Английский

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Responses of hydrological processes to vegetation greening and climate change in subtropical watersheds

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 55, P. 101946 - 101946

Published: Sept. 4, 2024

Language: Английский

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