Impacts of Extreme Flood and Drought Events on Dish-Shaped Lake Habitats in Poyang Lake Under Altered Hydrological Regimes DOI Creative Commons
Yifan Xu, Tengfei Hu,

Liangang Chen

и другие.

Remote Sensing, Год журнала: 2025, Номер 17(11), С. 1936 - 1936

Опубликована: Июнь 3, 2025

In recent years, the altered hydrological regimes and frequent extreme events in its watershed have significantly affected stability biodiversity of dish-shaped lakes (DSLs) ecosystem Poyang Lake. This study uses long-term water level records from Xingzi station, multi-source remote sensing imagery, field surveys to assess how influence coupled hydro-ecological evolution DSLs under different gate-controlled conditions. The results reveal following: (1) After 2003, average monthly levels declined by 0.84 m, shifting prolonged inundation depths 10.0 14.0 m range into 5.5 9.5 range. Extreme disrupted regimes, triggering a clear “collapse–recovery” succession submerged plants major shifts shoal wetland vegetation. (2) Gate-controlled (GC DSLs) mitigated many these impacts reducing autumnal drawdown area change rate 0.324 km2/d, curbing upward expansion emergent hygrophytic vegetation during high-water-level stabilizing habitats low-water-level although management strategies substrate characteristics may still lead divergent habitat trajectories. (3) heterogeneity exhibited DSLs’ communities along elevation gradient had differential effects on migratory birds, GC can offer birds relatively stable resting food resources events. recommends that DSL should adopt hierarchical dynamic regulation strategy balance natural fluctuations with human interventions, thereby strengthening resilience

Язык: Английский

Spatiotemporal variations of water levels and river-lake interaction in the Poyang Lake basin under the extreme drought DOI Creative Commons
Hexiang Chen, Guangqiu Jin, Hongwu Tang

и другие.

Journal of Hydrology Regional Studies, Год журнала: 2025, Номер 57, С. 102165 - 102165

Опубликована: Янв. 5, 2025

Язык: Английский

Процитировано

2
Impacts of Extreme Flood and Drought Events on Dish-Shaped Lake Habitats in Poyang Lake Under Altered Hydrological Regimes DOI Creative Commons
Yifan Xu, Tengfei Hu,

Liangang Chen

и другие.

Remote Sensing, Год журнала: 2025, Номер 17(11), С. 1936 - 1936

Опубликована: Июнь 3, 2025

In recent years, the altered hydrological regimes and frequent extreme events in its watershed have significantly affected stability biodiversity of dish-shaped lakes (DSLs) ecosystem Poyang Lake. This study uses long-term water level records from Xingzi station, multi-source remote sensing imagery, field surveys to assess how influence coupled hydro-ecological evolution DSLs under different gate-controlled conditions. The results reveal following: (1) After 2003, average monthly levels declined by 0.84 m, shifting prolonged inundation depths 10.0 14.0 m range into 5.5 9.5 range. Extreme disrupted regimes, triggering a clear “collapse–recovery” succession submerged plants major shifts shoal wetland vegetation. (2) Gate-controlled (GC DSLs) mitigated many these impacts reducing autumnal drawdown area change rate 0.324 km2/d, curbing upward expansion emergent hygrophytic vegetation during high-water-level stabilizing habitats low-water-level although management strategies substrate characteristics may still lead divergent habitat trajectories. (3) heterogeneity exhibited DSLs’ communities along elevation gradient had differential effects on migratory birds, GC can offer birds relatively stable resting food resources events. recommends that DSL should adopt hierarchical dynamic regulation strategy balance natural fluctuations with human interventions, thereby strengthening resilience

Язык: Английский

Процитировано

0