Relationships between Soil Moisture and Visible–NIR Soil Reflectance: A Review Presenting New Analyses and Data to Fill the Gaps

Geotechnics, Год журнала: 2024, Номер 4(1), С. 78 - 108

Опубликована: Янв. 4, 2024

The ability to precisely monitor soil moisture is highly valuable in industries including agriculture and civil engineering. As a spatially erratic temporally dynamic variable, rapid, cost-effective, widely applicable, practical techniques are required for monitoring at all scales. If consistent numerical relationship between content reflectance can be identified, then spectroscopic models may used efficiently predict from proximal and/or remotely sensed data. Previous studies have identified general decrease visible–NIR as increases, however, the strength, best wavelengths modelling, domain of remain unclear current literature. After reviewing relevant literature molecular interactions water light (400–2500 nm) range, this review presents new analyses interprets 1 nm resolution data, collected >20 levels ten samples. These data compared results other published studies, extending these further interpretation. Analyses high-resolution dataset demonstrate that linear sufficient characterise many cases, but relationships typically exponential. Equations generalising MC presented number wavelength ranges combinations. Guidance adjustment equations suit types also provided, allow others apply solutions here much wider range soils.

Язык: Английский

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The iGains4Gains model guides irrigation water conservation and allocation to enhance nexus gains across water, food, carbon emissions, and nature

Deleted Journal, Год журнала: 2025, Номер 2(1), С. 015014 - 015014

Опубликована: Фев. 6, 2025

Abstract This paper introduces and applies iGain4Gains, an Excel-based model, to reveal how changes water conservation allocation, irrigation technology, can produce four nexus gains. These gains are; reduced aggregate consumption, sustained crop production, lower carbon emissions, enhanced availability for nature. We developed the model with limited data hypothetical future scenarios from Amman–Zarqa basin in Jordan. Given its significant urban demands difficult decisions regarding allocation choices, this is a highly appropriate case study. The paper’s primary aim demonstrate iGains4Gains rather than build accurate hydrological of basin’s resources. addresses two critical questions increased efficiency. First, efficiency other factors, such as irrigated area, be applied achieve real savings while maintaining ensuring greenhouse gas emission reductions, ‘freeing’ nature? Second, insight that distributive/allocative act, we ask who between paracommoners (the proprietor system, neighbouring systems, society, nature) benefits hydrologically efficiency? Recognising are not always linear, positive predictable, reveals achieving all simultaneously difficult, likely leading trade-offs consumption rebounds or emissions. Demonstrated by use at workshop Jordan February 2024, used students, scientists decision-makers, explore understand connected management. concludes recommendations governing agriculture basins where large volumes withdrawn depleted irrigation.

Язык: Английский

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Coordinating food security and environmental performance in Belt and Road agri-food systems

Resources Conservation and Recycling, Год журнала: 2025, Номер 219, С. 108304 - 108304

Опубликована: Апрель 8, 2025

Язык: Английский

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Embracing complexities in agricultural water management through nexus planning

Irrigation and Drainage, Год журнала: 2024, Номер 73(5), С. 1695 - 1716

Опубликована: Сен. 29, 2024

A major challenge for agricultural water management (AWM) in the 21st century is to feed a growing population face of increasing intersectoral resource competition, evolving diets, degradation, pandemics, geopolitical conflicts and climate change. This has be achieved within planetary boundaries without compromising livelihood environmental (ecosystem) objectives linked water, including provisioning, supporting regulating services. paper uses systems nexus lens unravel centrality complexities AWM, with particular emphasis on interconnected dimensions as well its practices technologies. AWM exists beyond food linkages human well-being. needs catalyse transformation integrate approaches across systems, users scales meet changing climate. It must provide perspectives productivity, managing risks safeguarding security - important these are our understanding climate, land, ecosystems address health outcomes. By doing so, could contextualised, equitable, innovative solutions that acknowledge local socio-economic institutional structures limitations while catalysing sustainable development resilience.

Язык: Английский

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More food, but less land and water for nature: Why agricultural productivity gains did not materialize

Agricultural Water Management, Год журнала: 2024, Номер 307, С. 109229 - 109229

Опубликована: Дек. 11, 2024

Язык: Английский

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The complexities of irrigation efficiency: Groundwater data, agro-hydrology, and water decision-making in Central Oregon

Environmental Science & Policy, Год журнала: 2024, Номер 154, С. 103702 - 103702

Опубликована: Фев. 26, 2024

Язык: Английский

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