The Effect of Water Transfer during Non-growing Season on the Wetland Ecosystem via Surface and Groundwater Interactions in Arid Northwestern China

Qiao, Shufeng; Ma, Rui; Sun, Ziyong; Ge, Mengyan; Bu, Jianwei; Wang, Junyou; Zheng, Wang

doi:10.3390/rs12162516

Cited by 14 publications

(12 citation statements)

References 34 publications

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“…Overall, our calculated results were consistent with the field conditions, trends of changes in the groundwater table, and conclusions drawn by Qiao et al. (2020). Thus, these results confirmed that our proposed method could be suitably applied to field sites.…”

Section: Application Of the Proposed Methods At A Field Sitesupporting

confidence: 92%

Tracing the Soil Water Flux in Variably Saturated Zones Using Temperature Data

Meng

Wang

et al. 2023

Water Resources Research

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The coexistence of water, vapor, and solid phases and the spatiotemporal changes in thermal conductivities in response to variations in water content pose a challenge to the heat‐tracing method used to calculate water flux in variably saturated zones. In this study, a new approach, which adopted finite difference numerical schemes along with the limited‐memory Broyden–Fletcher–Goldfarb–Shanno bounded (L‐BFGS‐B) parameter optimization algorithm, was developed to inversely trace vertical soil water fluxes in variably saturated zones using temperature‐depth time‐series data. The newly developed method did not utilize hydraulic parameters, and only temperature time‐series data were used at the adjacent depths as boundary conditions. The soil water, vapor flux, and spatiotemporal variations in thermal conductivity at a given location were optimized by fitting the temperature time‐series at the target depth using the L‐BFGS‐B algorithm. Further, the method was verified through laboratory experiments under different saturated conditions that were conducted in two columns with saturated and free drainage bottom boundaries, and five sets of different flow rates with a relatively stable flow condition. The soil water flux calculated using the proposed method was consistent with the observed data, thus, verifying the reliability of the approach in applications with relatively stable flow rates. Furthermore, the new method was applied to a field site to estimate the time‐varying soil water flux using the measured temperature data. The trends of the calculated soil water flux at different depths were consistent with the field hydrologic conditions and observations. Thus, this study provides a novel computationally efficient and easy‐to‐implement tool to determine soil water flux using temperature measurements.

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Section: Application Of the Proposed Methods At A Field Sitesupporting

confidence: 92%

Tracing the Soil Water Flux in Variably Saturated Zones Using Temperature Data

Meng

Wang

et al. 2023

Water Resources Research

Self Cite

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“…Its climate is typical temperate continental arid desert climate. The soil type is dominated by Sand and loam sand [18] and the vegetation type is typical desert vegetation, mainly Nitraria sibirica, while reed is dominant around the lake [19]. Shiyang River in the basin, the only surface water which entered the study area, has been transformed into the main artificial irrigation channel for Oasis Irrigation.…”

Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

Relationship between Water Surface Area of Qingtu Lake and Ecological Water Delivery: A Case Study in Northwest China

et al. 2021

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Qingtu Lake is located between Tengger Desert and Badain Jilin Desert, Gansu Province, Northwest China. It is the terminal lake of Shiyang River. In recent years, Qingtu lake has maintained a certain area of water surface and vegetation by artificial water conveyance. It is of great significance in preventing the convergence of the two deserts and restraining the trend of ecological deterioration of Shiyang River Basin. The relationship between the water surface area and the ecological water conveyance have not been thoroughly investigated. This study analyzed the spatial and temporal distribution of water surface area of Qingtu Lake and surrounding reeds by interpreting remote sensing data; the change of water surface area under the influence of meteorological factors and water conveyance by linear regression; the water conveyance to maintain current water surface area by water balance method, as well as the reasonable ecological water delivery in high flow year, normal flow year and low flow year by the means of analyzing the upstream inflow and water consumption in Minqin Basin. The results showed that there is a significant correlation between the water surface area of Qingtu Lake, evaporation and ecological water conveyance, and the minimum and maximum water surface areas generally appear before and after water delivery, indicating that the ecological water delivery and evaporation are the two main factors affecting the water surface area change of Qingtu Lake. The result calculated by linear regression indicated that the ecological water delivery volume to maintain current water surface area of Qingtu Lake is 3.146 × 107 m3/yr, while the value was 3.136 × 107 m3/yr calculated by water balance method. These two results are similar and can be verified with each other. Reasonable ecological water conveyance of Qingtu Lake in high flow year, normal flow year and low flow years were 4 × 107 m3/yr, 3.2 × 107 m3/yr and 2.3 × 107 m3/yr, respectively.

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“…In this category, one paper is published. Qiao et al [15] investigated how water transfer in arid northwestern China influences the wetland ecosystem via surface and groundwater interactions. In arid and semiarid regions, water transfer is a useful way to prevent vegetation degradations and maintain healthy ecosystems.…”

Section: Monitoring Ecohydrological Processesmentioning

confidence: 99%

Using Remote Sensing Techniques to Improve Hydrological Predictions in a Rapidly Changing World

2021

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Remotely sensed geophysical datasets are being produced at increasingly fast rates to monitor various aspects of the Earth system in a rapidly changing world. The efficient and innovative use of these datasets to understand hydrological processes in various climatic and vegetation regimes under anthropogenic impacts has become an important challenge, but with a wide range of research opportunities. The ten contributions in this Special Issue have addressed the following four research topics: (1) Evapotranspiration estimation; (2) rainfall monitoring and prediction; (3) flood simulations and predictions; and (4) monitoring of ecohydrological processes using remote sensing techniques. Moreover, the authors have provided broader discussions, on how to make the most out of the state-of-the-art remote sensing techniques to improve hydrological model simulations and predictions, to enhance their skills in reproducing processes for the fast-changing world.

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The Effect of Water Transfer during Non-growing Season on the Wetland Ecosystem via Surface and Groundwater Interactions in Arid Northwestern China

Cited by 14 publications

References 34 publications

Tracing the Soil Water Flux in Variably Saturated Zones Using Temperature Data

Tracing the Soil Water Flux in Variably Saturated Zones Using Temperature Data

Relationship between Water Surface Area of Qingtu Lake and Ecological Water Delivery: A Case Study in Northwest China

Using Remote Sensing Techniques to Improve Hydrological Predictions in a Rapidly Changing World

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