Characteristics and Factors Influencing the Hysteresis of Water Area–Stage Curves for Poyang Lake

Huang, Aiping; Peng, Wenqi; Liu, Xiaobo; Du, Yingxun; Zhang, Shijie; Wang, Shiyan; Du, Fei; Dong, Feifei

doi:10.3390/w9120938

Cited by 13 publications

(4 citation statements)

References 37 publications

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“…Counterclockwise hysteresis has been detected in some physical and biological 27–29 systems, but has rarely been documented in ecological studies. These few ecological studies with counterclockwise hysteresis loops quantify static patterns of hydrological relationships along a spatial gradient, rather than measuring ecosystem dynamics and changes through time 30, 31 .…”

Section: Discussionmentioning

confidence: 99%

Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem

Northrop

Avalone

Ellison

et al. 2020

Preprint

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8Incremental increases in a driver variable, such as nutrients or detritus, can trigger abrupt shifts in aquatic ecosys-9 tems. Once these ecosystems change state, a simple reduction in the driver variable may not return them to their 10 original state. Because of the long time scales involved, we still have a poor understanding of the dynamics of ecosys-11 tem recovery after a state change. A model system for understanding ecosystem recovery is the aquatic microecosystem 12 that inhabits the cup-shaped leaves of the pitcher plant Sarracenia purpurea. With enrichment of organic matter, this 13 system flips within 1 to 3 days from an oxygen-rich state to an oxygen-poor (hypoxic) state. In a replicated green-14 house experiment, we enriched pitcher plant leaves at different rates with bovine serum albumin (BSA), a molecular 15 substitute for detritus. Changes in dissolved oxygen ([O 2 ]) and undigested BSA concentration were monitored during 16 enrichment and recovery phases. At low enrichment rates, ecosystems showed a substantial lag in the recovery of [O 2 ] 17 (clockwise hysteresis). At intermediate enrichment rates, [O 2 ] tracked the levels of undigested BSA with the same 18 profile during the enrichment and recovery phases (no hysteresis). At high enrichment rates, we observed a novel 19 response: changes in [O 2 ] were proportionally larger during the recovery phase than during the enrichment phase 20 (counter-clockwise hysteresis). These experiments demonstrate that detrital enrichment rate can modulate a diversity 21 of hysteretic responses in a single aquatic ecosystem. With counter-clockwise hysteresis, rapid reduction of a driver 22variable following high enrichment rates may be a viable restoration strategy. 23Anthropogenically enriched ecosystems often exhibit complex dynamics and regime shifts 1 . Such shifts occur when in-24 cremental changes in a driver variable suddenly tip these systems from one basin of attraction to another 1-5 . Early studies 25 emphasized the importance of forecasting impending regime shifts by signature statistical changes in the autocorrelation 6 or 26 the variance 7 of a response variable. However, the lead times 8 and sampling frequencies 9 necessary to detect early warning 27 signals are usually too long to implement for practical management strategies. Equally important for management is how 28 a system recovers after a collapse. Aquatic ecosystems that collapse rapidly often recover slowly 10-12 , and may remain in 29 an altered state long after enrichment has ceased. A general mechanism that might cause such a lag is hysteresis -a phe-30 nomenon in which the relationship between a response variable and driver variable depends on the state of the system 13 . In 31 hysteretic systems, changes in the response variable lag behind those in the driver variable due to feedback loops between 32 the response variable and other components of the system. 33In spite of their potential importance to management and restoration ecology 14 , hysteretic responses of recovering en-34 ...

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Section: Discussionmentioning

confidence: 99%

Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem

Northrop

Avalone

Ellison

et al. 2020

Preprint

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“…The lower boundary conditions of the model were specified as the daily water levels at Hukou station. Additional parameters and results of the model of Poyang Lake were published in the journal Water (Huang et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

“…Additional parameters and results of the model of Poyang Lake were published in the journal Water (Huang et al, 2017).…”

Section: Hydrodynamic Modelmentioning

confidence: 99%

Impact of hydrological processes on wetland landscapes and wintering migratory birds in a large floodplain lake (Poyang Lake, China)

Wang

Han

et al. 2022

Ecohydrology

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Hydrological processes are an important factor influencing the wetland landscapes and the quality of wintering migratory birds habitat in Poyang Lake. However, most of the research on a small spatiotemporal scale and there is a lack of studies on the impact of hydrological processes on migratory bird habitats. This study analysed the response of the Poyang Lake wetland landscape to low water levels from 1990 to 2016 and determined the relationship between hydrological processes, wetland landscape characteristics and migratory bird habitats. According to the results, the number of days during the study period when the maximum water level was higher than the current water level (MaxDay) and the average water level from the 40th to 50th day prior to the current day (D50) are two critical factors affecting the area of grassland in Poyang Lake. In particular, a D50 value of 9.5–11.0 m is important for maintaining the grassland area and growth of wetland vegetation. Besides, the water level should not exceed 11 m from mid–late October to early November and should be maintained between 7.58 and 7.97 m in mid–late December that can maximize the habitat area of migratory birds. Furthermore, this study used ecological threshold to propose the optimal inundation period of Cyperus rotundus L. community, Leersia japonica community, Polygonum criopolitanum community, Phragmites australis community, Triarrhena lutarioriparia community, Carex spp. community and Phalaris arundinacea community, which are 124–174, 31–101, 199–249, 65–147, 51–121, 110–190 and 175–253 days, respectively.

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“…Notably, on 8-9 July, the Poyang Lake Basin received record-breaking rainfall, with an average provincial rainfall of 108 mm-the highest since complete meteorological records began in 1961 [5]. Studies by Wang Han et al [7] further reveal that the extreme rainfall indices during the 2020 flood season were significantly higher than those in 1998. This rainfall was characterized by its wide distribution range, prolonged duration, high intensity, and elevated extreme indices, all contributing factors to Poyang Lake's high water level and large water volume which, when combined with the high water level of the Yangtze River, sustained elevated water levels in Poyang Lake leading to a major flood disaster.…”

Section: Introductionmentioning

confidence: 99%

Investigating Flood Characteristics and Mitigation Measures in Plain-Type River-Connected Lakes: A Case Study of Poyang Lake

Deng,

Wu,

Wang

et al. 2024

Water

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The flow of plain-type river-connected lakes is affected by both upstream and downstream rivers, and the hydrological conditions are very complex. Poyang Lake, situated in Jiangxi Province, is the largest river-connected lake in the Yangtze River Basin. Its unique geographical features and complex hydrological conditions have made it a heavy disaster area and a frequent area of floods since ancient times. As typical mitigation measures of Poyang Lake, semi-restoration polder areas and flood storage and detention areas play a crucial role in the flood control of Poyang Lake. Taking Poyang Lake as an example, this article studies the flood characteristics of Poyang Lake based on the measured hydrological data. Furthermore, by using the weir (gate) outflow formula to construct the hydraulic model of semi-restoration polder areas and DHI MIKE to construct the hydrodynamic model of Kangshan flood storage and detention area, the flood diversion capacity of the two, and the flood diversion effect under the super-historical flood in 2020 are analyzed. The results show that compared with the non-use of mitigation measures, the maximum cumulative reduction in Xingzi water level can be reduced by 0.68 m and 0.48 m when semi-restoration polder areas and Kangshan flood storage and detention areas are used alone. Finally, the article puts forward some thoughts and suggestions on the flood control of Poyang Lake. The research results can offer some reference to the flood risk management of plain-type river-connected lakes.

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Characteristics and Factors Influencing the Hysteresis of Water Area–Stage Curves for Poyang Lake

Cited by 13 publications

References 37 publications

Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem

Clockwise and counterclockwise hysteresis characterize state changes in the same aquatic ecosystem

Impact of hydrological processes on wetland landscapes and wintering migratory birds in a large floodplain lake (Poyang Lake, China)

Investigating Flood Characteristics and Mitigation Measures in Plain-Type River-Connected Lakes: A Case Study of Poyang Lake

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