Method for calculating ecological water storage and ecological water requirement of marsh

Li, Lijuan; Li, Jiuyi; Liang, Lina; Liu, Yumei

doi:10.1007/s11442-009-0427-z

Cited by 16 publications

(7 citation statements)

References 4 publications

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“…For lakes, however, only limited lake level assessment methods have been proposed to define a minimum ecological lake level, including historical lake level method, lake morphology analysis, water balance analysis, water quality modeling, habitat analysis, species-environment models, or a combination of the above methods (Xu et al, 2004;Beca, 2008). Similar methods have also been used in the assessment of wetland water level and storage (Li et al, 2009;Tan et al, 2012). However, the relationship between lake level and lake ecosystem has not been fully understood, and most lake level assessment methods consider only part of the factors influencing the lake ecosystem.…”

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confidence: 99%

Lake surface area method to define minimum ecological lake level from level-area-storage curves

Shang

2013

J. Arid Land

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Lake level assessment is essential for the protection of ecosystem in shrunk or shrinking lakes. Minimum ecological lake level is the critical lake level below which there should be no human activities to further decrease the lake level, and this level can provide a certain protection for the lake ecosystem. Lake surface area method was proposed to define the minimum ecological lake storage as the breakpoint of the lake surface area-storage curve, where the curve slope equals to the ratio of maximum lake surface area to maximum lake storage. If the curve can be expressed as a simple analytical function, the minimum ecological lake storage can be calculated analytically. Otherwise, it can be calculated numerically using the ideal point method for an equivalent multi-objective optimization model that balances ecosystem protection and water use. Then the minimum ecological lake level can be estimated from the lake level-storage curve. Compared with available lake morphology analysis methods, the lake surface area method is superior in its definition of minimum ecological lake level, applicable range of lake morphology, and calculation complexity. The proposed method was applied to two representative lakes in China, including one freshwater lake (the Dongting Lake in Hunan province in Central China) and one saltwater lake (the Ebinur Lake in Xinjiang Uygur autonomous region in Northwest China). The estimated minimum ecological lake level for the Dongting Lake is 26.7 m, at which 31% of the maximum lake storage provides 87% of the maximum lake surface area. The result for the Ebinur Lake is 191.2 m, at which 24% of the maximum lake storage provides 54% of the maximum lake surface area. The estimated minimum ecological lake level balances the conflict between economical and ecological water uses, and can provide a relatively larger habitat for the lake ecosystem with relatively smaller lake storage. These results are rational compared with the results of other methods. The calculated minimum ecological lake level can be used in the protection of lake ecosystems and the planning and rational use of water resources in lake basins.

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confidence: 99%

Lake surface area method to define minimum ecological lake level from level-area-storage curves

Shang

2013

J. Arid Land

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“…Marshes play an irreplaceable role in biodiversity conservation (Drexler et al, 2008; Li et al, 2009; Li & JianJian, 2011). The e‐flow calculation for marshes involves multidisciplinary knowledge, and the methods used can be generally divided into statistical analysis and model simulations.…”

Section: Introductionmentioning

confidence: 99%

Environmental flow mechanism and management for river–lake‐marsh systems

Yin

Peng

Zhou

2022

Hydrological Processes

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Sustaining environmental flows (e‐flows) is a basic requirement for river, lake and marsh management. Rivers, lakes and marshes have close hydrological and ecological connections in a river basin, and form river–lake‐marsh systems. Any measure that is designed to address problems related to only one of these water bodies in isolation of the others may lead to unexpected, undesired and sub‐optimal consequences for one or all of the water bodies. Papers were selected for this special issue ‘Environmental Flow Mechanism and Management for River‐Lake‐Marsh Systems’ to illustrate recent advances in revealing new mechanisms connecting hydrological and environmental/ecological processes, developing new methods for e‐flow calculation, and establishing new measures for e‐flow management.

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“…While the method of calculating wetland ecological water requirement is well known (Li et al, 2009), only limited studies have been carried out on the wetland water requirement for sustaining ecological functions. Zhang et al (2013) used the Analytic Hierarchy Process (AHP) approach to determine weighted indices of different factors that affect wetland ecosystem values, incorporating environmental constraints and socio-economic value in each index (Wang et al, 2003;Herath, 2004 areas with a high value for the conservation of the ecosystem; areas with a high potential impact on biodiversity; wetland size; and eco-networks.…”

Section: Introductionmentioning

confidence: 99%

Calculation of Wetlands Ecological Water Requirement in China’s Western Jilin Province Based on Regionalization and Gradation Techniques

ZHANG¹

2016

Appl Ecol Env Res

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Abstract. In this study a method for measuring the regional hydrological connectivity and water supply requirement of wetlands in Western Jilin Province (WJL) is defined and verified. The ecological water requirements of 216 wetlands, under various guarantee frequencies, were calculated and analyzed. In addition, twelve indicators were used to establish an evaluation index system, to characterize their ecological water requirements. The results showed that 12 hydrologically connected regions were delineated in WJL, and the 216 wetlands can be classified to six grades by AHP (Analytic Hierarchy Process) method. The annual minimum, suitable, and maximum ecological water requirements of these wetlands were found to be 7.72×10 8 m 3 , 13.76×10 8 m 3 , 26.15×10 8 m 3 respectively, with 50% guarantee frequency. The primary water supply to the lakes and marshes was found to be from regional sources that provided a scientific basis for the allocation of water resources from the interconnected river-lake system network (IRLSN) in WJL.

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Method for calculating ecological water storage and ecological water requirement of marsh

Cited by 16 publications

References 4 publications

Lake surface area method to define minimum ecological lake level from level-area-storage curves

Lake surface area method to define minimum ecological lake level from level-area-storage curves

Environmental flow mechanism and management for river–lake‐marsh systems

Calculation of Wetlands Ecological Water Requirement in China’s Western Jilin Province Based on Regionalization and Gradation Techniques

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