Dynamics of Nitrogen and Phosphorus Release from Submerged Soil–Plant Systems in the Three Gorges Reservoir DOI Open Access
Lei Hu, Liwei Xiao, Tao Wang

и другие.

Water, Год журнала: 2025, Номер 17(11), С. 1701 - 1701

Опубликована: Июнь 4, 2025

The water-level fluctuation zone (WLFZ) in the Three Gorges Reservoir (TGR) has attracted significant attention because of its pivotal role shaping environmental processes. However, with increasing water level, effects nitrogen and phosphorus release from submerged soil–plant systems WLFZ on deterioration quality remain poorly understood. In this study, a simulation experiment was conducted involving undisturbed soil columns that once year at different elevations (150, 160, 170 m) before reservoir impoundment within TGR area. results revealed concentrations various forms overlying released after system submergence first decreased, then rapidly increased 30 days, reached equilibrium 120 days flooding. Particulate N accounted for approximately 70% total (TN) released, while particulate P more than 90% (TP) by 200 which may be related to erosion plant decomposition. amounts were significantly negatively correlated initial mass system, indicating nutrient is susceptible plants. During flooding period TGR, loads into 159.83 kg ha−1 19.30 ha−1. These suggest plants could risk water-induced deterioration. Therefore, additional vegetation management might implemented alleviate eutrophication caused WLFZ.

Язык: Английский

Dynamics of Nitrogen and Phosphorus Release from Submerged Soil–Plant Systems in the Three Gorges Reservoir DOI Open Access
Lei Hu, Liwei Xiao, Tao Wang

и другие.

Water, Год журнала: 2025, Номер 17(11), С. 1701 - 1701

Опубликована: Июнь 4, 2025

The water-level fluctuation zone (WLFZ) in the Three Gorges Reservoir (TGR) has attracted significant attention because of its pivotal role shaping environmental processes. However, with increasing water level, effects nitrogen and phosphorus release from submerged soil–plant systems WLFZ on deterioration quality remain poorly understood. In this study, a simulation experiment was conducted involving undisturbed soil columns that once year at different elevations (150, 160, 170 m) before reservoir impoundment within TGR area. results revealed concentrations various forms overlying released after system submergence first decreased, then rapidly increased 30 days, reached equilibrium 120 days flooding. Particulate N accounted for approximately 70% total (TN) released, while particulate P more than 90% (TP) by 200 which may be related to erosion plant decomposition. amounts were significantly negatively correlated initial mass system, indicating nutrient is susceptible plants. During flooding period TGR, loads into 159.83 kg ha−1 19.30 ha−1. These suggest plants could risk water-induced deterioration. Therefore, additional vegetation management might implemented alleviate eutrophication caused WLFZ.

Язык: Английский

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