- منطقة بودونغ الجديدة ، شنغهاي ، الصين .
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The sand and gravel mining plays a significant role in changing the morphometric features of any river like shifting of river bank, channel width, channel depth, channel pattern, etc. These impacts become evident due to unscientific sand and gravel mining which was...
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They hope these models will be able to detect sand mining activity in river basins and catalyze policy action, improve the monitoring and regulation of illegal mining activity, and help everyday people better understand the socio-economic and environmental impacts of sand mining.
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Koehnken L, Rintoul MS, Goichot M, et al. (2020) Impacts of riverine sand mining on freshwater ecosystems: A review of the scientific evidence and guidance for future research. River Research and Applications 36(3): 362–370.
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A literature review published last year highlights the urgent need for research into the impacts of sand mining on biodiversity and ecosystem services. Research is also needed into the industry's opaque supply chains, to connect the dots that link unsustainable sand mining and hydropower dams to changes in the physical …
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For example, excessive riverbed sand mining in the Mekong River Delta in Vietnam has negatively affected river-wetland connectivity and flood frequency, ... There has even been research into using desert sand in various stages of construction (Block, 2018). Research into these newer types of concrete can lower costs of maintenance and ...
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Moreover, lack of adequate information on the environmental impact of river sand mining is a major lacuna challenging regulatory efforts in many developing countries. Therefore, a scientific assessment is a pre-requisite in formulating management strategies in the sand mining-hit areas.
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River Research and Applications is a river science journal for basic and applied scientific research of rivers, covering river management, regulation & restoration. Abstract Sand mining (used here as a generic term that includes mining of any riverine aggregates regardless of particle size) is a global activity that is receiving increasing ...
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The proposed project would extract 12.5 million tons of PCC-grade construction sand and gravel over a 12-year period from a 479.5-acre site in the El Monte Valley that includes the San Diego River channel. Mining would occur over 228 acres of the site in four phases to a depth of approximately 35 to 41 feet below the current ground elevation ...
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Therefore, a detail research project on the evaluation of the environmental impacts caused by sand mining was conducted through the use of geological principles, geotechnical principles, geographical information system (GIS) and remote sensing to assess the environmental impacts of sand mining along Nzhelele River Valley.
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This study highlights the usefulness of small UAVs in identifying illegal gravel and sand mining sites in river beds (Romania), but also in smaller torrents (Greece). The proposed methodology helps to identify when the mining occurs in a river/torrent bed, but also estimate its dimensions.
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Existing studies have shown that sand mining is a global economic activity that supports urbanization, community livelihood and housing, and construction sector thereby contributing immensely to the gross domestic products (GDP) of all countries. However, sand mining produces some externalities that put the physical environment …
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