ABSTRACT Seagrass meadows provide vital services like carbon storage and habitat provisioning. Accurately estimating aboveground biomass (AGB) is essential for monitoring ecosystem health and guiding conservation efforts. While remote sensing offers a non-destructive method for large-scale AGB assessment, the performance of different vegetation indices (VIs) for seagrass, particularly Zostera marina, is not well understood. Building on previous research for Zostera noltei, we evaluated the predictive accuracy of 32 VIs, derived from field-based remote sensing reflectance, for estimating Z. marina AGB at Poel Island, Germany. Linear regression and hyperbolic Michaelis–Menten models were applied to assess the relationship between VIs and AGB. ND800/700 and mND705 were the best AGB predictors, with strong relationships (R2 = 0.82 and 0.81) and high saturation points (74.22 ± 11.69 and 82.38 ± 13.41 gDWm−2). Commonly used NDVI indices (NDVI650, NDVI680 and NDVI) also performed well (R2 = 0.80), but saturated at lower biomass range (32.41 to 48.79 gDWm−2). Percentage cover explained 81% of AGB variability, supporting its use as a rapid proxy for biomass. Overall, this study demonstrates the strong potential of VIs for non-destructive Z. marina biomass estimation, supporting the development of remote sensing tools for the effective seagrass monitoring and management.

Spatio-temporal dynamics and drivers of carbon storage in arid ecosystems: Integrated analysis using InVEST and PLUS models with machine learning.

Spatiotemporal variations and prediction analysis of decadal series carbon storage in coastal city based on GEE.

Microbial versus plant carbon partitioning governs organic carbon formation pathways in paddy and upland soils under long-term fertilization.

Cadmium-containing straw return obstructs carbon storage and aggravates nitrogen deficiency in paddy soils.

Multiphase flow dynamics and flow pattern analysis in production wellbore during subsurface carbon storage

Comprehensive energy balance analysis and techno-economic evaluation of static hydrogen carbon savings for an industrial dual-fuel combustor used in food manufacturing

Research on ductile fracture arrest control of CO2 transportation pipelines in carbon capture, utilization and storage technology

Port sustainability: Synergistic pathways and perspectives for air pollution control and carbon mitigation.

Species richness increases vegetation carbon sequestration but decreases soil carbon storage in temperate grasslands of China

Regulating the interfacial water structure of montmorillonite through hydrophobic modification: A strategy to promote hydrate formation during liquid CO₂ injection.

Improving forest aboveground carbon storage estimation by fusing spaceborne LiDAR features and three-dimensional enhanced spectral indices.

New insights into effect of PBAT microplastics on latosol microbial metabolic functions.

Drivers of ecosystem multifunctionality in temperate forests: Carbon-biodiversity coupling in natural forests versus soil-structural control in plantations.

South Korea has positioned hydrogen and carbon capture, utilization and storage (CCUS) as key technological pillars of its 2050 carbon neutrality strategy. Despite sustained and ambitious policy intervention, however, empirical evidence on how policy interventions have reshaped public R&D portfolios and early industrial diffusion remains limited. This study examines hydrogen and CCUS in South Korea through a policy−R&D−industrial diffusion framework, focusing on policy sequencing and institutional design. The analysis combines qualitative content analysis with project-level R&D data from the National Science and Technology Information Service (NTIS) and interrupted time series analysis to identify policy-induced structural breaks, while industrial diffusion is assessed using deployment indicators such as hydrogen vehicles, hydrogen refueling stations, and large-scale (>100,000 tons/year) CCUS projects. The results indicate a clear divergence in policy outcomes between the two sectors. Hydrogen policy interventions rapidly shifted public R&D toward utilization and industry-oriented development stages and were accompanied by a sharp increase in public R&D expenditures, thereby accelerating deployment. By contrast, CCUS experienced fragmented R&D adjustments, continued public-sector dominance, and limited large-scale demonstration. These findings highlight that while policy-driven, mission-oriented innovation pathways can mobilize R&D and early markets, their effectiveness depends on timely legal frameworks, the institutional coherence of the policy framework, and market-supporting infrastructure. In the case of CCUS, delayed legal institutionalization has constrained the transition from public R&D accumulation to industrial-scale deployment, highlighting the need for stronger regulatory clarity, market-creation instruments, and supporting data infrastructures. • Green innovation follows a policy-driven, top-down pathway in South Korea. • Study links policy, R&D, and industry using legislative and project-level data. • Hydrogen policy synchronization accelerated market-oriented R&D and deployment. • Delayed CCUS legislation caused policy lags and fragmented R&D trajectories. • Innovation requires timely legal frameworks and supportive market environments.

This study critically evaluates Russia’s carbon capture, utilization, and storage (CCUS) policy within the framework of low-carbon hydrogen development, with a particular focus on the feasibility of “blue” hydrogen. Using a multivocal literature review of 44 high-quality academic and gray sources, the analysis compares Russia’s emerging CCUS framework with established international policy models. The results show that blue hydrogen production in Russia is technically feasible and cost-competitive at the production stage, with estimated costs of approximately USD 2.8–3.5 per kg H 2 when CCUS is applied, compared to USD 0.5–1.7 per kg H 2 for unabated hydrogen. Lifecycle emissions of blue hydrogen range from 7.6 to 9.3 kg CO 2 -eq/kg H 2 , representing a 30–45% reduction relative to grey hydrogen but remaining significantly higher than renewable-based green hydrogen (0.6–2.5 kg CO 2 -eq/kg H 2 ). Russia possesses substantial geological CO 2 storage potential, estimated at over 7.3 Gt, with individual projects capable of injecting up to 1 Mt CO 2 annually; however, only about 22.6% of this capacity is suitable for CO 2 -enhanced oil recovery. Despite these technical advantages, large-scale CCUS deployment is constrained by high capital intensity, leakage risks, geopolitical barriers, and a “soft” regulatory regime lacking enforceable carbon pricing or targeted fiscal incentives. In contrast to countries such as the United States, Norway, and Canada, where tax credits, carbon pricing, and dedicated storage regulation underpin commercial CCUS projects, Russia’s current policy framework remains insufficient to ensure investment viability. The study concludes that without the rapid introduction of robust carbon pricing, legally defined CO 2 storage regimes, and performance-based financial incentives, CCUS in Russia will remain confined to pilot projects, limiting the environmental credibility and export competitiveness of Russian blue hydrogen. • Russian blue hydrogen is technically and cost competitive • Blue hydrogen reduces emissions but lags green • Vast CO 2 storage, limited practical capacity • Policy gaps block CCUS scale-up in Russia • Stronger policies needed for blue hydrogen success

Progress and perspectives on pore-scale flow in methane hydrate reservoirs: Microfluidic and numerical strategies for synergistic CH4 recovery and CO2 sequestration.

Southern component water-driven carbonate dissolution and carbon storage during the Last Glacial Maximum in the western South Atlantic

A novel framework for quantifying ecosystem quality by coupling urban morphology.

CO2 Foamed Concrete: An Innovative Approach to Combining Mechanical Strength and Carbon Storage