Hydrological connectivity shape the nitrogen pollution sources and microbial community structure in a river-lake connected system DOI Creative Commons

Haoda Chen,

Lulu Zhang, Zhi‐Jie Zheng

и другие.

Frontiers in Microbiology, Год журнала: 2025, Номер 16

Опубликована: Апрель 11, 2025

Intensified agricultural and urban activities have exacerbated nitrogen pollution, posing a severe threat to freshwater ecosystems, particularly under intensified urbanization activities. This study systematically examined Baiyangdian Lake (BYD) its principal inflowing rivers, namely Fu River (FH), Baigouyin (BGY), Xiaoyi (XY) characterize the spatio-temporal distribution, primary sources, impact on sediment microbial community structure. Results indicated pronounced seasonal variations in both pollution loads with riverine levels rising markedly from dry season (May) wet (August). Atmospheric deposition accounted for 43.9% of input season, whereas fertilizers sewage contributed 23.3 26.4%, respectively. Additionally, communities exhibited distinct temporal spatial patterns, significantly higher diversity species richness being during season. The, composition shifted, as evidenced by decline Proteobacteria increases Firmicutes Actinobacteriota . River-lake connectivity emerged critical factor, FH displaying notably index compared BGY XY rivers. Structural equation modeling (SEM) analysis further revealed that river-lake was positively correlated negatively α-diversity. These findings demonstrated directly influenced concentrations, which turn indirectly modulated diversity.

Язык: Английский

Landsat monitoring reveals the history of river organic pollution across China during 1984-2023 DOI

Nuoxiao Yan,

Zhiqiang Qiu,

Chenxue Zhang

и другие.

Water Research, Год журнала: 2025, Номер unknown, С. 123210 - 123210

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Hydrological connectivity shape the nitrogen pollution sources and microbial community structure in a river-lake connected system DOI Creative Commons

Haoda Chen,

Lulu Zhang, Zhi‐Jie Zheng

и другие.

Frontiers in Microbiology, Год журнала: 2025, Номер 16

Опубликована: Апрель 11, 2025

Intensified agricultural and urban activities have exacerbated nitrogen pollution, posing a severe threat to freshwater ecosystems, particularly under intensified urbanization activities. This study systematically examined Baiyangdian Lake (BYD) its principal inflowing rivers, namely Fu River (FH), Baigouyin (BGY), Xiaoyi (XY) characterize the spatio-temporal distribution, primary sources, impact on sediment microbial community structure. Results indicated pronounced seasonal variations in both pollution loads with riverine levels rising markedly from dry season (May) wet (August). Atmospheric deposition accounted for 43.9% of input season, whereas fertilizers sewage contributed 23.3 26.4%, respectively. Additionally, communities exhibited distinct temporal spatial patterns, significantly higher diversity species richness being during season. The, composition shifted, as evidenced by decline Proteobacteria increases Firmicutes Actinobacteriota . River-lake connectivity emerged critical factor, FH displaying notably index compared BGY XY rivers. Structural equation modeling (SEM) analysis further revealed that river-lake was positively correlated negatively α-diversity. These findings demonstrated directly influenced concentrations, which turn indirectly modulated diversity.

Язык: Английский

Процитировано

0