Article
Environmental Sciences
Lei Xu, Saiyu Yuan, Hongwu Tang, Jiajian Qiu, Yang Xiao, Colin Whittaker, Carlo Gualtieri
Summary: Mixing processes downstream of river confluences have significant impacts on the ecology and environmental management of river networks. This study investigates the mixing dynamics at the confluence between the Yangtze River and the Poyang Lake in China. Results show that the mixing dynamics are influenced by various factors, including the momentum flux ratio, secondary flow, and the lock-exchange flow associated with density differences. Slow mixing is observed during high-flow conditions, while rapid mixing is observed during low-flow conditions. Additionally, the lock-exchange flow enhances mixing when the Yangtze River waters have higher temperature.
WATER RESOURCES RESEARCH
(2022)
Article
Water Resources
Chenyang Xue, Qi Zhang, Yuxue Jia, Saiyu Yuan
Summary: In the study region of the middle Yangtze River-Poyang Lake-catchment in China, the natural hydrological regime has been altered by climate conditions and human activities, resulting in frequent droughts. The potential recovery capacity of existing reservoirs and a proposed hydraulic project to restore the hydrological regime was assessed. Findings show that joint regulation of existing reservoirs can fully restore the hydrological regime in typical years, but not during extremely dry years. However, the proposed hydraulic project can restore the lake to a reasonable water level even in extreme droughts like 2022.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2023)
Article
Environmental Sciences
Saiyu Yuan, Hongwu Tang, Kun Li, Lei Xu, Yang Xiao, Carlo Gualtieri, Colin Rennie, Bruce Melville
Summary: The study found that at the confluence between the Yangtze River and Poyang Lake, dual counter-rotating cells were observed under high flow conditions, while a single secondary cell appeared under low flow conditions. These helical cells restricted the core size of high sediment concentration and hindered the exchange of sediment between the two rivers.
WATER RESOURCES RESEARCH
(2021)
Article
Engineering, Civil
Huawu Wu, Qi Huang, Congsheng Fu, Fan Song, Jinzhao Liu, Jing Li
Summary: The interactions between the Yangtze River and Poyang Lake are undergoing rapid changes due to human activities and climate change. The isotopic compositions in river and lake water show temporal heterogeneity across seasons but spatial homogeneity, suggesting the influence of local precipitation, groundwater, and lake hydrology. The study also highlights the importance of precipitation as the main water source for the lake and river, as well as the impact of Three Gorges Dam regulation and water discharge in the complex lake-river interactions.
JOURNAL OF HYDROLOGY
(2021)
Article
Geosciences, Multidisciplinary
Peipei Zhang, Jingqiao Mao, Mingming Tian, Lingquan Dai, Tengfei Hu
Summary: The operation of the Three Gorges Reservoir has significant effects on the downstream water exchange between the Yangtze River and Poyang Lake. A machine learning model was developed to assess these effects, showing that the reservoir operation has a greater impact in wet years. In dry years, it helps maintain lake water levels, while in wet years, it aids in flood control in the lake area.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Multidisciplinary Sciences
Chenge An, Hongwei Fang, Li Zhang, Xinyue Su, Xudong Fu, He Qing Huang, Gary Parker, Marwan A. Hassan, Nooreen A. Meghani, Alison M. Anders, Guangqian Wang
Summary: This passage explains why two large lakes, Dongting Lake and Poyang Lake, exist along the Yangtze River. It suggests that rising sea levels due to deglaciation caused a wave of water surface elevation and bed aggradation. The blockage of tributaries by the main stem's aggradation resulted in the formation of the lakes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Environmental Sciences
Biqing Tian, Peng Gao, Xingmin Mu, Guangju Zhao
Summary: In this study, changes in the water area of Poyang Lake from 1977-2021 were investigated using remote sensing imagery, hydrological data, meteorological data, and land use surveys. The results showed that the water area of Poyang Lake decreased during the study period, primarily due to changes in river runoff and sediment load. The construction of the Three Gorges Dam also played a role in reducing water flow into the lake, resulting in a decrease in water area in certain seasons.
Article
Ecology
Yafang Wang, Qing Chen, Lei Li, Huifang Ding, James D. Fraser, Jinjin Hou, Wenjuan Wang
Summary: Wetland habitat degradation has led to increasing food shortages for wild animals. While the direct effects of food shortages on consumers are well studied, the cascading effects on interspecific interactions remain poorly understood. Targeted research is needed to improve our understanding of the impacts of food shortage on animals and facilitate conservation planning.
FRESHWATER BIOLOGY
(2023)
Article
Zoology
Xinjian Wang, Eryan Yang, Lizhi Zhou
Summary: Wintering Tundra Swans in the lakes of the Yangtze River floodplain face wetland degeneration and habitat loss. The study found that foraging behavior dominates during the winter season, with troughs and peaks in the morning and evening. The foraging intensity and vigilance behavior of swans are affected by water level fluctuations, while shallow water areas are preferred for foraging.
PAKISTAN JOURNAL OF ZOOLOGY
(2021)
Article
Environmental Sciences
Qiyue Li, Mingming Deng, Wenya Li, Yue Pan, Geying Lai, Ying Liu, Adam Thomas Devlin, Weiping Wang, Shupin Zhan
Summary: Habitats of freshwater cetaceans are facing increasing threats globally, and it is crucial to have a complete understanding of the long-term variations of habitat configurations. Poyang Lake in China is home to a large and stable population of critically endangered Yangtze finless porpoise. However, declining water levels and increased human activities in the lake since 2000 have raised concerns for porpoise conservation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Mingzheng Li, Chang Liu, Fei Liu, Jianwei Wang, Huanzhang Liu
Summary: This study evaluates the long-term dynamics of fishery yields in Poyang Lake and its relationship to hydrological variability. The results show that changes in water levels have a significant impact on fishery yields, which have been decreasing over the past few decades. This study is important for the conservation of fish resources and lake ecosystems.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Environmental Sciences
Wenyu Wang, Peng Yang, Jun Xia, Heqing Huang, Jiang Li
Summary: This study analyzed the spatial and temporal distribution characteristics of nutrients and investigated the effects of land use on water quality in Poyang Lake. The accuracy of water quality inversion models varied, but overall they were consistent. The optimal inversion method also varied for different water quality parameters. The influence of land use on water quality varied at different scales of buffer zones.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Fisheries
Chen Zhang, Mingzheng Li, Tao Chang, Xin Gao, Huanzhang Liu, Wenxuan Cao
Summary: The study found that lateral hydrological connectivity plays a crucial role in shaping fish assemblages between the Yangtze River and Poyang Lake, with significant seasonal differences influenced by water temperature, water level, and fish migration. Fish species in the river-floodplain system exhibit species-specific migration dynamics, which are related to their life-history traits. Temporal-spatial interactions in the fish community are essentially derived from evolutionary adaptation to the monsoon climate, providing insights for managing river-floodplain systems effectively.
ECOLOGY OF FRESHWATER FISH
(2021)
Article
Environmental Sciences
Bing Li, Guishan Yang, Rongrong Wan, Xijun Lai, Paul D. Wagner
Summary: This study investigates the long-term changes of five key ecosystem services in China's Poyang Lake and examines the impact of the Three Gorges Dam on hydrology. The results show that Poyang Lake provides significant ecosystem services, but these services have been decreasing since the 2000s.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jie Liang, Qianfang Meng, Xin Li, Yujie Yuan, Yuhui Peng, Xiaodong Li, Shuai Li, Ziqian Zhu, Ming Yan
Summary: The study showed that hydrology-climate changes and food availability significantly impact waterbirds diversity and population dynamics. Unseasonable water recession timing has negative effects on Anatidae, especially the Lesser White-fronted goose population. Factors like water level, flow, and water recession interval time explain 71% of maximum NDVI in Dongting Lake. Additionally, hydraulic interactions between the mainstream and each lake affect vegetation growth and foraging suitability.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Biodiversity Conservation
Qin Zhu, Keith A. Hobson, Qingshan Zhao, Yiqi Zhou, Iderbat Damba, Nyambayar Batbayar, Tseveenmyadag Natsagdorj, Batmunkh Davaasuren, Aleksei Antonov, Jian Guan, Xin Wang, Lei Fang, Lei Cao, Anthony David Fox
DIVERSITY AND DISTRIBUTIONS
(2020)
Article
Ecology
Qin Zhu, Iderbat Damba, Qingshan Zhao, Kunpeng Yi, Nyambayar Batbayar, Tseveenmyadag Natsagdorj, Batmunkh Davaasuren, Xin Wang, Sonia Rozenfeld, Sachiko Moriguchi, Aibin Zhan, Lei Cao, Anthony D. Fox
ECOLOGY AND EVOLUTION
(2020)