Sustainability, Journal Year: 2024, Volume and Issue: 16(21), P. 9229 - 9229

Published: Oct. 24, 2024

The Tibetan Plateau is the “Asia Water Tower” and pivotal for Asia whole world. Groundwater essential sustainable development in its alpine regions, yet chemical quality increasingly limits usability. present research examines hydrochemical characteristics origins of phreatic groundwater irrigation areas. study probes signatures, quality, regulatory mechanisms a representative area Plateau. findings indicate that maintains slightly alkaline fresh status, with pH values ranging from 7.07 to 8.06 Total Dissolved Solids (TDS) between 300.25 638.38 mg/L. composition mainly HCO3-Ca type, minority HCO3-Na·Ca types, closely mirroring profile river water. Nitrogen contaminants, including NO3−, NO2−, NH4+, exhibit considerable concentration fluctuations within aquifer. Approximately 9.09% sampled groundwaters exceed NO2− threshold 0.02 mg/L, 28.57% surpass NH4+ limit 0.2 mg/L potable water standards. All are below permissible NO3− (50 mg/L). Phreatic exhibits relatively good potability, as assessed by entropy-weighted index (EWQI), 95.24% having an EWQI value 100. However, potential health risks associated elevated levels, rather than merit attention when such consumed minors at certain sporadic sampling locations. does not sodium hazards or soil permeability damage, salinity require attention. makeup primarily dictated rock–water interactions, silicate weathering cation exchange reactions, occasional influences dissolution evaporites carbonates, well reverse cation-exchange processes. While agricultural activities have caused notable rise salinity, they main contributors nitrogen pollution area’s groundwater. Agricultural-derived pollutants vigilant monitoring avert extensive deterioration ensure management resources

Language: Английский