Hydromorphological processes of Dongting Lake in China between 1951 and 2014

Yu, Yang; Mei, Xuefei; Dai, Zhijun; Gao, Jinjuan; Li, Jingbao; Wang, Jie; Lou, Yaying

doi:10.1016/j.jhydrol.2018.05.015

Cited by 80 publications

(41 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dongting Lake (28°30'-30°20'N; 111°40'-113°10'E) is located in the middle reaches of the Yangtze River (Yu et al, 2018). Dongting Lake is composed of three sub-basins, namely, the western, southern, and eastern sub-basins of Dongting Lake.…”

Section: Study Areamentioning

confidence: 99%

“…The discharge from Yangtze River into Dongting Lake has decreased; the water level of Dongting Lake and the duration of high water level have also decreased (Xie et al, 2014;Gao et al, 2019;Yang et al, 2020). With the fluctuations in water level in space and time, the development of macrophyte community and patterns of macrophyte zonation in the wetland changes annually and seasonally (Guan et al, 2016;Li et al, 2018;Yu et al, 2018). Nevertheless, it is difficult to predict the composition of the plant communities in relation to flood regime (Xie et al, 2014;Hu et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Community Trait Responses of Three Dominant Macrophytes to Variations in Flooding During 2011–2019 in a Yangtze River-Connected Floodplain Wetland (Dongting Lake, China)

et al. 2021

View full text Add to dashboard Cite

In lacustrine wetlands connected to rivers, the changes in flood regimes caused by hydrological projects lead to changes in the community traits of dominant macrophytes and, consequently, influence the structure and function of wetland vegetation. However, community trait responses of macrophytes to the timing and duration of flood disturbance have been rarely quantified. In 2011–2019, we investigated plant species diversity, density, and biomass in three dominant macrophyte communities (Carex brevicuspis C.B. Clarke, Miscanthus sacchariflorus (Maxim.) Hackel, and Polygonum hydropiper L.) through monthly field surveys in Dongting Lake wetlands. Partial least squares regressions were used to analyze how the variations in hydrological regimes affected plant community traits. Apparent inter-annual fluctuations in plant community traits were detected during 2011–2019. The species richness and Shannon index of diversity of Miscanthus and Polygonum communities increased, whereas the Shannon index of diversity of Carex community decreased. Variation in flooding had a greater effect on Polygonum and Carex community traits than on Miscanthus community traits. Flooding disturbed all plant communities, especially when the duration and timing varied. Shorter inundation periods caused the biomass of Miscanthus community to decline, and that of Carex and Polygonum communities to increase. Earlier flood recession caused the species richness and Shannon index of diversity of Polygonum and Miscanthus community to increase, and those of Carex community to decrease. These findings imply that shorter inundation durations and earlier flood recession generated by the operation of the Three Gorges Dam have changed the macrophyte growth pattern.

show abstract

Section: Study Areamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Community Trait Responses of Three Dominant Macrophytes to Variations in Flooding During 2011–2019 in a Yangtze River-Connected Floodplain Wetland (Dongting Lake, China)

et al. 2021

View full text Add to dashboard Cite

show abstract

“…The construction of the TGP has had a major impact on the lower Yangtze River (Dai and Liu, 2013;Dai et al, 2018), especially the Jingjiang River. These impacts include changes to the tributaries of the Jingjiang River, changes to upstream inflow levels and flood combinations along the Jingjiang River, and changes in the effects of upstream water flow on flood diversion areas (Hayashi et al, 2008;Qu et al, 2012Qu et al, , 2013Wang et al, 2013;Li et al, 2016;Yu et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Flood Control Capacity of the Three Gorges Project for Different Frequency Floods

Yan

Jing

Xia

et al. 2021

Environmental Engineering Science

View full text Add to dashboard Cite

An accurate assessment of flood control capacity of a reservoir is a prerequisite for ensuring the safety of flood control works. This study used the method of adding side reservoirs and used MIKE11 to establish a onedimensional hydrodynamic model of the Three Gorges Reservoir (TGR). Based on the combination of the dynamic reservoir capacity flood control and the separation of the outflow of the Jingjiang Three Outlets, the flood control capacity of the TGR was assessed. The results showed that the TGR can effectively withstand large floods below the magnitude of 100-year return period discharge. For a rare flood event in 1,000 years recurrence interval, it is necessary to use the Jingjiang flood diversion area for ensuring the safety of downstream floodplains along the main river course. As far as exceptionally large floods with the return frequency of 0.01% or lager magnitude concerned, this extreme high flow cannot be safely impounded by the TGR even if the Jingjiang flood diversion area is adopted. Therefore, a series of upstream cascade reservoirs are suggested to be fully utilized for a joint flood control strategy.

show abstract

“…4 The downcutting is so great that water from the lake backs up into the Yangtze River during the dry season, resulting in drastic changes in the hydrological conditions and sediment deposition rate in rivers and lakes downstream this massive dam. 5 The consequences are manifested in an earlier dry season in autumn, a prolonged drying of the floodplain, 6 and a seasonal decline in waterfowl habitat in Dongting Lake. 7 The floodplains of Dongting Lake have been managed for fish, vegetables, Phragmites australis production since ancient times.…”

Section: Introductionmentioning

confidence: 99%

A U.S.‐China EcoPartnership study of disturbed wetland vegetation in West Dongting Lake, China

Lei

Middleton

2021

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

Hydromorphological processes of Dongting Lake in China between 1951 and 2014

Cited by 80 publications

References 44 publications

Community Trait Responses of Three Dominant Macrophytes to Variations in Flooding During 2011–2019 in a Yangtze River-Connected Floodplain Wetland (Dongting Lake, China)

Community Trait Responses of Three Dominant Macrophytes to Variations in Flooding During 2011–2019 in a Yangtze River-Connected Floodplain Wetland (Dongting Lake, China)

Flood Control Capacity of the Three Gorges Project for Different Frequency Floods

A U.S.‐China EcoPartnership study of disturbed wetland vegetation in West Dongting Lake, China

Contact Info

Product

Resources

About