Ground-Penetrating Radar Detection of Hydrologic Connectivity in a Covered Karstic Setting

Honings, Joseph P.; Wicks, Carol M.; Brantley, Steven T.

doi:10.3390/hydrology9100168

Cited by 5 publications

(2 citation statements)

References 34 publications

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“…This may lead to a lower water area and lower EPV. In this study, the implementation of ground-penetrating radar detection and groundwater models could be effective means to improve research accuracy in karst areas [59].…”

Section: Implications For Other Protected Areasmentioning

confidence: 99%

Spatial Zoning of the Value Realization Models for Ecological Products in Shibing Karst Natural World Heritage Site

Zhang

Xiong

Huang

et al. 2023

Forests

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Natural World Heritage properties provide humanity with a rich and diverse range of ecological products, and the realization of their economic value is related to heritage protection and the improvement of community residents’ well-being. In this study, the equivalent factor method was used to calculate the ecological product value (EPV), and the fishnet tool in ArcGIS was used for spatial zoning. The main land use type of the study area is forest land, accounting for over 82% of the total area. The conversion of land use types is weak in the property and strong in the buffer zone. The EPV of the study area was about USD 172.41 million, showing a downward trend before World Heritage inscription but an upward trend after the inscription, with forests as the main contributor. The spatial distribution of the ecosystem service value of the study area has obvious hierarchical characteristics. World Heritage inscription is beneficial for maintaining the stability of land use and for the improvement of the EPV of the property. The high- and low-EPV areas, respectively, are related to the distribution of forests and agricultural land. The dominant models of EPV in the study area are ecological forestry economy, water economy, and ecological agricultural economy and forestry economy.

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Section: Implications For Other Protected Areasmentioning

confidence: 99%

Spatial Zoning of the Value Realization Models for Ecological Products in Shibing Karst Natural World Heritage Site

Zhang

Xiong

Huang

et al. 2023

Forests

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“…This establishes a robust geophysical foundation for the application of geological detection. Figure 1 depicts a schematic illustration of the fundamental working principle of GPR [29,30].…”

Section: Ground-penetrating Radar Detection Theorymentioning

confidence: 99%

A Study on the Influence of Steel Structures in Concrete Subgrades on the Detection of Subgrade Distresses by Ground-Penetrating Radar

Bai,

Liu,

Cui

et al. 2023

Sustainability

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The detection of subgrade distresses in ballastless track railways poses a formidable challenge due to the presence of steel interference caused by the unique characteristics of high-speed rail track slabs and the dense arrangement of the steel reinforcement mesh within them. Here, we aim to examine the influence of varying distribution patterns of steel reinforcement in ballastless tracks on the detection of subgrade distresses using ground-penetrating radar. Through a combination of on-site testing and forward modeling, this paper analyzes the interference of steel reinforcement on the detection of voids beneath the steel using electromagnetic waves. The research findings reveal that incident electromagnetic waves from the ground-penetrating radar experience attenuation near steel reinforcements, with only a fraction able to penetrate the surface layer and propagate into the subsurface through interstitial gaps between the reinforcing bars. Furthermore, this influence diminishes as the spacing between the reinforcing bars increases and the bar diameter decreases. When steel bars are distributed on the upper and lower layers, the detection results of the lower void are most significantly influenced by the interlocking of the steel bars in the two layers. These research results can offer theoretical and technical support for the detection of ailments in high-speed railway subgrades.

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Hydraulic redistribution supplies a major water subsidy and improves water status of understory species in a longleaf pine ecosystem

Belovitch,

Brantley,

Aubrey

2024

Ecohydrology

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Hydraulic redistribution (HR) is a common phenomenon in water‐limited ecosystems; however, it remains unclear how the volume of water transported via HR compares to other components of the hydrologic budget and how HR influences water availability for understory plant communities. In this study, we investigate the absolute and relative magnitude of HR on a forest water budget and identify potential impacts of this water subsidy to understory plant communities. We scaled tree‐level estimates of transpiration and HR of three common tree species naturally occurring in a longleaf pine woodland with plot‐level measurements of basal area to determine their magnitude at the stand scale. We trenched plots containing understory vegetation but devoid of mature trees and their connected roots to exclude HR subsidies to understory plant species. We analysed soil water isotopes and assessed leaf water potential (ΨL) in trenched and control plots to determine if HR results in mixing of water among soil strata and improves understory plant moisture status. Water inputs from HR were equivalent to >30% of total rainfall for the site during the observation period and ~40% of total tree water uptake, depending on species. A stable isotope mixing model confirmed that soil water within HR‐exposed plots was more similar to groundwater, whereas soil water within trenched plots was more similar to precipitation. Exclusion of HR via trenching decreased soil moisture and pre‐dawn ΨL for all understory species. These three lines of evidence suggest that HR from overstory trees redistributes a sizable portion of water from deeper to shallower soil profiles and that this water subsidy enhances understory plant water status.

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Ground-Penetrating Radar Detection of Hydrologic Connectivity in a Covered Karstic Setting

Cited by 5 publications

References 34 publications

Spatial Zoning of the Value Realization Models for Ecological Products in Shibing Karst Natural World Heritage Site

Spatial Zoning of the Value Realization Models for Ecological Products in Shibing Karst Natural World Heritage Site

A Study on the Influence of Steel Structures in Concrete Subgrades on the Detection of Subgrade Distresses by Ground-Penetrating Radar

Hydraulic redistribution supplies a major water subsidy and improves water status of understory species in a longleaf pine ecosystem

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