Short‐Term Distribution Patterns of Young‐of‐the‐Year Fish Assemblages between the Main Stem and Affiliated Lakes in the Middle Reaches of the Yangtze River, China

2020 ◽  
Author(s):  
Fei Cheng ◽  
Bjorn Schmidt ◽  
Jiao Qin ◽  
Songuang Xie ◽  
Wei Li
Keyword(s):  
Yangtze River ◽  
Fish Assemblages ◽  
Distribution Patterns ◽  
Main Stem ◽  
The Yangtze River ◽  
Short Term ◽  
Young Of The Year

Composition and changes in abundance and biomass of fish assemblages along the Jingjiang section of the Yangtze River over the last decade

2014 ◽  
Vol 21 (6) ◽  
pp. 688-698
Author(s):  
Sun Shasha ◽  
Tang Wenqiao ◽  
Guo Hongyi ◽  
Li Huihua ◽  
Liu Dong ◽  
...  
Keyword(s):  
Yangtze River ◽  
Fish Assemblages ◽  
The Yangtze River

The aggravated short-term PM2.5-related health risk due to atmospheric transport in the Yangtze River Delta

2021 ◽  
Vol 275 ◽  
pp. 116672
Author(s):  
Peng Wang ◽  
Juanyong Shen ◽  
Shengqiang Zhu ◽  
Meng Gao ◽  
Jinlong Ma ◽  
...  
Keyword(s):  
Health Risk ◽  
Yangtze River ◽  
Atmospheric Transport ◽  
Yangtze River Delta ◽  
River Delta ◽  
The Yangtze River ◽  
Short Term ◽  
The Yangtze River Delta

scholarly journals Using Satellite Gravity and Hydrological Data to Estimate Changes in Evapotranspiration Induced by Water Storage Fluctuations in the Three Gorges Reservoir of China

2020 ◽  
Vol 12 (13) ◽  
pp. 2143
Author(s):  
Yuhao Zheng ◽  
Linsong Wang ◽  
Chao Chen ◽  
Zhengyan Fu ◽  
Zhenran Peng
Keyword(s):  
Water Balance ◽  
Yangtze River ◽  
Three Gorges Reservoir ◽  
Water Storage ◽  
Three Gorges ◽  
The Yangtze River ◽  
Short Term ◽  
The Three Gorges ◽  
Terrestrial Water ◽  
High Precipitation

The change in water storage driven by the Three Gorges Project directly affects the terrestrial water migration and redistribution in the Yangtze River Basin (YRB). As a result, a new water balance is established and regional evapotranspiration (ET) fluctuates in the process. In this paper, data from multiple-sources including from the Gravity Recovery and Climate Experiment (GRACE) satellite, land surface models (LSMs), remote sensing, and in-situ observations were used to monitor the temporal and spatial evolution of terrestrial water and estimate changes in ET in the Three Gorges Reservoir (TGR) from 2002 to 2016. Our results showed that GRACE data scaled using the scale factor method significantly improved the signal amplitude and highlighted its spatial differences in the TGR area. Combining GRACE with surface hydrological observations, ET in the TGR area was estimated to have overall change characteristics highly consistent with results from the MOD16 Moderate Resolution Imaging Spectroradiometer (MODIS), and the uncertainties of monthly ET are mainly from TWS changes derived by GRACE uncertainties such as measurement errors and leakage errors. During our study period, the cyclical ET was mainly driven by climate precipitation but short-term (monthly) ET in the TGR area was also directly affected by human-driven water storage. For example, rising water levels in the three water storage stages (2003, 2006, and 2008) caused an abnormal increase in regional ET (up to 22.4 cm/month, 19.2 cm/month and 29.5 cm/month, respectively). Usually, high precipitation will cause increase in ET but the high precipitation during the water release periods (spring and summer) did not have a significant impact on the increased ET due to the water level in the TGR having decreased 30 m in this stage. Our results also indicate that the short-term fluctuations in flooded area and storage capacity of the TGR, i.e., the man-made mass changes in the main branch and tributaries of the Yangtze River, were the main factors that influenced the ET. This further illustrated that a quantitative estimation of changes in the ET in the TGR allows for a deeper understanding of the water balance in the regional land water cycle process as driven by both climate and human factors.

Fishery Resources, Environment, and Conservation in the Mississippi and Yangtze (Changjiang) River Basins

2016 ◽  
Keyword(s):  
Yangtze River ◽  
Socioeconomic Development ◽  
Anthropogenic Activities ◽  
Yangtze River Basin ◽  
Main Stem ◽  
Ecological Communities ◽  
Functional Communication ◽  
The Yangtze River ◽  
River Ecosystem ◽  
Subtropical Monsoon Climate

<em>Abstract</em>.—The Yangtze River is the largest river in China, with a drainage area encompassing a land area of 1.8 × 10<sup>6</sup> km<sup>2</sup>. The river main stem flows approximately 6,300 km from west to east through 11 provinces, eventually emptying into the East China Sea. The total basin area of the Yangtze River provides more than 40% of China’s gross domestic product, sustains nearly 500 million people, and plays a vital role in the overall socioeconomic development of China. Because of longitudinal differences in geomorphology, the Yangtze River is often divided into upper, middle, and lower reaches for the purposes of study and description. In general, the Yangtze River basin has a warm climate and abundant rainfall. The subtropical monsoon climate accounts for 70–80% of its annual rainfall, which produces predictable annual flood events during summers of each year. The Yangtze River ecosystem also has diverse aquatic habitats that support high biodiversity. The Yangtze River main stem contains more than 3,000 tributaries and approximately 4,000 lakes that provide important habitats for thousands of aquatic species, which include 378 fish species. Yet, the ecological communities of the Yangtze River have been dramatically impacted in recent decades due to high degrees of anthropogenic activities associated with the economic development of China. Significant biodiversity declines occurring throughout the basin have been largely attributed to hydropower dam construction, overexploitation of major fisheries, water pollution, and habitat fragmentation. In addition, widespread disconnection of the Yangtze River main stem from its floodplain lakes, lake reclamation projects, invasions by exotic species, and other serious ecological problems threaten the survival of the remaining aquatic resources in the basin. To offset the adverse effects of these threats, a number of nature reserves have been established. Additionally, protection and restoration measures, including spring fishing closures, artificial population enhancement strategies, and complete habitat restoration projects, have been implemented throughout the basin. Although these projects have yielded some encouraging results to date, they are still considered inadequate. It is recommended that an integrated strategy that includes cross-functional communication mechanisms, more comprehensive monitoring, ecological rehabilitation, and government legislation is still needed. This will insure that utilization and development in the Yangtze River ecosystem are sustainable and balanced with conservation and ecological needs.

Longitudinal recovery gradients of drifting larval fish assemblages in the middle reach of the Yangtze River: impact of the Three Gorges Dam and conservation implementation

2019 ◽  
Vol 76 (12) ◽  
pp. 2256-2267 ◽  
Author(s):  
Yiqing Song ◽  
Fei Cheng ◽  
Peng Ren ◽  
Zhen Wang ◽  
Songguang Xie
Keyword(s):  
Water Temperature ◽  
Yangtze River ◽  
Fish Assemblages ◽  
Larval Fish ◽  
Three Gorges ◽  
The Yangtze River ◽  
River Section ◽  
Middle Reach ◽  
The Three Gorges ◽  
The Three Gorges Dam

Drifting larval fish assemblages were investigated at three sections in the middle reach of the Yangtze River downstream of the Three Gorges Dam to reveal recovery gradients and to identify the major environmental factors influencing their temporal and spatial patterns. Larval fish in the river section closest to the dam showed lower abundance, later occurrence, narrower temporal niche breadth, and more pairs of dominant species with high niche overlap than those further from the dam. Water temperature, transparency, and discharge significantly influenced the larval fish assemblages. They showed longitudinal gradients of increased water temperature, decreased transparency, and increased discharge in a downstream direction. Our results suggested that hypolimnetic and clean water discharge from the dam heavily impacted larval fish assemblage in the river section near the dam. With an increased distance to the dam and the input of some major tributaries, this impact was gradually buffered, thus forming the longitudinal recovery gradients. We suggest that priority for conservation should shift from river sections closer to the dam to those further from the dam.

Impact of Anthropogenic Organic Matter on the Distribution Patterns of Sediment Microbial Community from the Yangtze River, China

2019 ◽  
Vol 36 (10) ◽  
pp. 881-893 ◽  
Author(s):  
Kai Zhang ◽  
Ding He ◽  
Xingqian Cui ◽  
Daidu Fan ◽  
Shangbin Xiao ◽  
...  
Keyword(s):  
Organic Matter ◽  
Microbial Community ◽  
Yangtze River ◽  
Distribution Patterns ◽  
The Yangtze River
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