Assessing environmental water requirement for groundwater-dependent vegetation in arid inland basins by combining the copula joint distribution function and the dual objective optimization: An application to the Turpan Basin, China

Feng, Huang; Ochoa, Carlos G.; Chen, Xi

doi:10.1016/j.scitotenv.2021.149323

Cited by 18 publications

(5 citation statements)

References 24 publications

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“…A large amount of water resources is consumed by evapotranspiration, resulting in serious soil secondary salinization in the middle of the basin and vegetation apoptosis in the downstream desert area. The regulation of regional groundwater resources based on ecological thresholds can start from three aspects: groundwater replenishment, drainage, and development and utilization [39]. Groundwater exploitation is a major way of discharging groundwater in the study area and should be based on "the strictest water resources management system" for approving the regional groundwater recoverable amount, for the regional economic development and ecological stability constraints, and optimization of the regional groundwater exploitation plan; it makes full use of the rich area of groundwater resources in the study area and restores the deficiency area of groundwater resources.…”

Section: Suggestions For the Ecological Regulation Of Groundwatermentioning

confidence: 99%

Groundwater Dynamic Characteristics with the Ecological Threshold in the Northwest China Oasis

et al. 2022

Sustainability

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Suitable groundwater level is an important foundation for the stability of the ecological environment, and the healthy development of the social economy, in the arid area of Northwest China. The Manas River Basin is a typical oasis in an arid area, where the problems of salinization and desertification are prominent. By analyzing the variation characteristics of groundwater in the study area from 2013 to 2019 combined with remote sensing technology—according to the theory of capillary water rise and phreatic evaporation—a mathematical calculation model of the ecological threshold is established to determine the ecological groundwater level. The results show that (1) the groundwater level in the study area fluctuates by 0.2–18 m throughout the year, and the variation of groundwater drawdown is 5–35 m from 2013 to 2019; (2) the upper threshold of the ecological groundwater level is 0.82–4.05 m and the lower threshold is 3.35–10.23 m; (3) the ecological water shortage area in the study area is 9755.36 km2, and the groundwater ecological deficit is 105.741 × 108 m3. This study can provide a theoretical basis for the determination of the ecological groundwater level, the optimal allocation of water resources, and ecological environment management in the arid area of Northwest China.

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Section: Suggestions For the Ecological Regulation Of Groundwatermentioning

confidence: 99%

Groundwater Dynamic Characteristics with the Ecological Threshold in the Northwest China Oasis

et al. 2022

Sustainability

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“…Tahir et al [39] used the best-fit copula estimate to define the degree of correlation between the percentage load and the converter efficiency. Huang et al [40] used copula joint distribution function to describe the relationship between vegetation and groundwater depth and estimate the conditional probability of achieving ecological protection target. Therefore, it can describe the correlations among occupants, lighting and equipment, respectively, hence establishing marginal distribution functions of these three parameters and a three-parameter distribution function for calculating the joint probability of internal disturbances.…”

Section: Step 1: Establishing Joint Probability Distribution Functionsmentioning

confidence: 99%

“…Therefore, it can describe the correlations among occupants, lighting and equipment, respectively, hence establishing marginal distribution functions of these three parameters and a three-parameter distribution function for calculating the joint probability of internal disturbances. In this study, Matlab, a popular computational tool for numerical calculation [40], has been used to construct the Copula function. Based on measured behavioral data from real buildings, the marginal distribution of the single parameters could be calculated.…”

Section: Step 1: Establishing Joint Probability Distribution Functionsmentioning

confidence: 99%

A dual-objective trade-off approach to decide the optimum design parameters for internal cooling load calculation

Ding

Jun-chu

Liu

et al. 2022

Energy and Buildings

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“…Several approaches are used for calculating vegetation EWR, including the area quota method, phreatic evaporation method, water balance method, biomass method, Penman-Monteith method, and remote sensing method [8][9][10]. The area quota method is suitable for plants sharing similar underlying surface and climatic conditions and is commonly used to calculate water requirement for artificial vegetation [11].…”

Section: Introductionmentioning

confidence: 99%

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Wang,

Zayit,

et al. 2023

Remote Sensing

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Desert oases are vital for maintaining the ecological balance in arid regions’ inland river basins. However, fine-grained assessments of water stress in desert oasis ecosystems are limited. In our study, we aimed to evaluate the water stress in desert oasis ecosystems in the middle reaches of the Keriya River Basin, with a specific focus on their ecological functions and optimizing water resource management. We hypothesized that evapotranspiration has significant effects on ecological water consumption. First, we estimated the actual evapotranspiration (ET) and potential evapotranspiration (PET) based on the SEBS (surface energy balance system) model and remote sensing downscaling model. Then, the ecological water requirement (EWR) and ecological water stress (EWS) index were constructed to evaluate the ecological water resource utilization. Finally, we explored the influencing factors and proposed coping strategies. It was found that regions with higher ET values were mainly concentrated along the Keriya River and its adjacent farmland areas, while the lower values were observed in bare land or grassland areas. The total EWR exhibited the sequence of grassland > cropland > forest, while the EWR per unit area followed the opposite order. The grassland’s EWS showed a distinct seasonal response, with severe, moderate, and mild water shortages and water plenitude corresponding to spring, summer, autumn, and winter, respectively. In contrast, the land use types with the lowest EWS were water areas that remained in a state of water plentitude grade (0.08–0.20) throughout the year. Temperature and vegetation index were identified as the primary influencing factors. Overall, this study provides a reliable method for evaluating the EWR and EWS values of basin scale vegetation, which can serve as a scientific basis for formulating water resource management and regulation policies in the region.

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Assessing environmental water requirement for groundwater-dependent vegetation in arid inland basins by combining the copula joint distribution function and the dual objective optimization: An application to the Turpan Basin, China

Cited by 18 publications

References 24 publications

Groundwater Dynamic Characteristics with the Ecological Threshold in the Northwest China Oasis

Groundwater Dynamic Characteristics with the Ecological Threshold in the Northwest China Oasis

A dual-objective trade-off approach to decide the optimum design parameters for internal cooling load calculation

Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

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