Article
Engineering, Civil
Tianyang Li, Binghui He, Yuqi Zhang, Shi Fu, Yi Zhang, Xunjian Long
Summary: The stoichiometric coupling of dissolved silica (DSi) and bicarbonate (HCO3-) in lakes is regulated by chemical weathering and algal activity, with the dynamics influenced by hydrological conditions and water quality variables. Changes in DSi and HCO3- show spatial and temporal patterns in different zones of the lake, with significant effects of biological activity, water level fluctuations, and pollution discharge on silicon and carbon coupling.
JOURNAL OF HYDROLOGY
(2021)
Article
Biodiversity Conservation
Muhammad Arif, Zheng Jie, Hamid M. Behzad, Li Changxiao
Summary: This paper examines the impact of ecotourism activities on riparian health indicators (RHIs) and finds a correlation between recreational activities and RHIs. The study also highlights the influence of different land-use patterns on the distribution of RHIs. The findings suggest that zoning could be an essential option for sustainable use of riparian zone ecosystem services.
ECOLOGICAL INDICATORS
(2023)
Article
Multidisciplinary Sciences
Lifen Zhang, Wulin Liao, Zhigao Chen, Jinggang Li, Yunsheng Yao, Guangqin Tong, Yannan Zhao, Ziyan Zhou
Summary: This study analyzed the seismic activity in the Three Gorges Reservoir area using the spatial density scanning method. The results showed a higher frequency of earthquakes during the reservoir loading and unloading processes. It was also found that certain seismic parameters exhibit a significant decrease before moderate earthquakes.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Jian Sun, Jie Lin, Xiaofeng Zhang, Zijun Xiao, Binliang Lin, Haoyang Xu
Summary: Water temperature in aquatic systems is influenced by dams, leading to a lag in seasonal temperature changes. A composite cosine function is proposed to better describe the dam-influenced seasonal temperature pattern. In the Three Gorges Reservoir, asymmetric seasonal temperature processes were observed with annual and semi-annual components contributing significantly to the time varying water temperature.
RIVER RESEARCH AND APPLICATIONS
(2021)
Article
Biotechnology & Applied Microbiology
Yu Qin, Qiong Tang, Lunhui Lu, Yuchun Wang, Irina Izaguirre, Zhe Li
Summary: This study investigated the temporal distribution patterns of bacterial communities in a transition section of the Three Gorges Reservoir, revealing that sediment bacteria dominate the reservoir microbial communities. Differences were found in bacterial diversity between water and sediment, with bacterioplankton communities showing greater sensitivity to monthly changes.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Aifeng Zhai, Baodeng Hou, Xiaowen Ding, Guohe Huang
Summary: A new program for predicting water pollution accidents in drinking water sources has been developed, showing that larger discharge flows can reduce the impact of accidents and improve water quality. This study provides decision makers with a tool to predict the diffusion and migration of pollutants in drinking water sources.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Xueqin Liu, Qiangqiang Xu
Summary: The ecological impacts of hydropeaking on riverine ecosystems have not been well studied. Through research on the Three Gorges Dam, we found that hydropeaking significantly influenced the elevational distributions, assemblage structure, and species-specific biomass patterns of riverine plants. These findings highlight the importance of water level management in the conservation and restoration of riverine plants.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Lihua Xiong, Cong Jiang, Shenglian Guo, Shuai Li, Rongrong Li, Wenbin Li
Summary: This study performs a multivariate dam-site flood frequency analysis for the Three Gorges Reservoir (TGR) considering future reservoir regulation and summer precipitation. The results indicate that the design dam-site floods in the future will be smaller than those derived from historical flood distributions, indicating a smaller flood risk for the TGR in the future.
Article
Environmental Sciences
Lirong Yin, Lei Wang, Barry D. Keim, Kory Konsoer, Wenfeng Zheng
Summary: This study aims to analyze the changes in river discharge and regional precipitation records before and after the construction of the Three Gorges Dam. The findings show a decrease in precipitation and reduced variability after the dam was built, as well as a decrease in river discharge.
Article
Environmental Sciences
Jie Zheng, Muhammad Arif, Songlin Zhang, Zhongxun Yuan, Limiao Zhang, Zhi Dong, Xue Tan, Wokadala Charles, Changxiao Li
Summary: The study on the plant composition and similarity in the drawdown zone of the Three Gorges Dam Reservoir in China revealed extreme similarity in plant community composition across the three different river segments, with a steady declining trend in species richness along the drawdown zone. Environmental and spatial factors were found to contribute to 11% and 8% of the species composition change, respectively. These results highlighted the impact of dam impoundment on species composition and emphasized the importance of restoration activities in overcoming barriers to seed dispersal and seedling establishment in the degraded drawdown zone ecosystem.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Jinren Ni, Haizhen Wang, Tao Ma, Rong Huang, Philippe Ciais, Zhe Li, Yao Yue, Jinfeng Chen, Bin Li, Yuchun Wang, Maosheng Zheng, Ting Wang, Alistair G. L. Borthwick
Summary: This study finds that the Three Gorges Dam has significantly reduced greenhouse gas emissions along the Yangtze River, leading to a decrease in CO2, CH4, and N2O emissions and a reduction in emissions to the sea. These findings highlight the importance of whole-system budgeting of greenhouse gases under the influence of large dams.
NATIONAL SCIENCE REVIEW
(2022)
Article
Engineering, Environmental
Rong Xiang, Lijing Wang, Hong Li, Zebin Tian, Binghui Zheng
Summary: The study investigated the spatiotemporal variations in water quality of the Three Gorges Reservoir tributaries, revealing that the water quality was mainly affected by the mainstream backwater movement. Overall, the water quality of tributaries was good and showed an improving trend, with upstream tributaries having better water quality compared to downstream areas and estuaries.
Article
Environmental Sciences
Xiaoxia Bai, Qiang Xu, Hong Li, Cheng Cheng, Qiang He
Summary: This study reveals that damming of rivers alters the spatial distribution of carbon in sediments, leading to higher CH4 and CO2 concentrations upstream compared to downstream. During reservoir impounding periods, CH4 diffusive flux is higher upstream than downstream, while CH4 emissions are predominantly by ebullition, with significantly higher flux downstream during discharging periods. The increase in TOC in downstream sediment is attributed to riparian zone soil erosion caused by water level fluctuations.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Aiying Zhang, Zongqiang Xie
Summary: In the Three Gorges Reservoir Area in China, dam construction has led to a significant decrease in riparian plant diversity and an increase in alien species invasion. The proportion of C-4 plant species has also significantly increased, with these plants becoming dominant species in the RFA.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Lifen Zhang, Kalpna Gahalaut, Wulin Liao, Yannan Zhao, Yunsheng Yao, Jinggang Li, Weibing Qin, Guichun Wei, Ziyan Zhou
Summary: Based on statistical analysis of water level variations and seismic activity in the Three Gorges reservoir region in central China from 2003 to 2020, it was found that long-term water level variations influence earthquake activity. The earthquakes in the region were divided into three zones (A, B, and C) based on cluster patterns and their relationship with faults. The seismic activity in Zone C is strongly influenced by water level variations, while the seismicity in Zone B is primarily related to coal mine collapses. The seismic activity in Zone A may be influenced by various other factors.