Ministry of Natural Resources

Diagnosing drought–flood vulnerability of rice systems across growth stages using Sentinel-1/2 and CHIRPS time series

Compound and rapidly alternating drought and flood events pose a major challenge to rice production because crop impacts depend strongly on when hydroclimatic stress occurs and how crop condition evolves afterwards. Here, rice vulnerability is characterized by stage-specific expo...

Contrasting associations of sea‐ice meltwater and meteoric water with nitrogen uptake patterns in the summer Cosmonaut Sea, Antarctica

Abstract Nitrogen uptake by phytoplankton influences Southern Ocean productivity and carbon export, but how source‐resolved meltwater is associated with nitrate and ammonium use remains unclear. Here, 15 N tracer incubations and a δ 18 O‐salinity mixing model were combined to exa...

A Spatial-Domain Crest-Line Tracking Method for Swell-Based Shallow-Water Bathymetry Retrieval from Sentinel-1 SAR Imagery

Shallow-water bathymetry is essential for coastal dynamics, navigation, engineering, and marine-resource management, especially where in situ observations are sparse. This study proposes a wave-stripe-based method for shallow-water bathymetric retrieval from Sentinel-1A VV-polari...

Reconstructing flood-induced human mobility using LLM agent with disaster context adaptation

Understanding human mobility during extreme flood events is critical for emergency evacuation and resilient transport planning, yet flood-induced behavioral heterogeneity remains difficult to characterize. Progress has been constrained by data scarcity and the inherent complexity...

Mineralogical Characterization and Purification of High-Purity Quartz from the Pegmatite Core Zone

Pegmatitic quartz is an important source of high-purity quartz, and its purity and inclusion characteristics together constitute the key criteria for evaluating the efficient utilization of this quartz. This study takes the quartz resource from the core zone of a pegmatite deposi...

Enzymatic Hydrolysate of Red Yeast Rice Accelerates Diabetic Wound Healing in Mice: Association with Modulation of Inflammatory, Matrix-Remodeling, and Angiogenesis-Related Markers

Delayed healing of diabetic wounds arises from a self-sustaining pathological microenvironment featuring persistent inflammation, excessive matrix degradation, impaired angiogenesis, and insufficient collagen deposition, and current single-process interventions remain unsatisfact...

Two-dimensional nanosheet-based solvent-free nanofluids: A systematic review from synthetic strategies and structural engineering to frontier applications

Solvent-free nanofluids (SFNs) transform inorganic nanomaterials into liquid-like hybrid systems through surface-engineered core-corona-canopy architectures, offering a promising route to overcome aggregation, poor processability, and solvent-related instability. While previous s...

Asymmetric bloom lengthening drives high-latitude ocean chlorophyll accumulation imbalance

Terrestrial ecosystems maintain a stable time-allocation budget between growth and senescence, but whether this applies to the ocean remains unclear. Using fused satellite LiDAR and ocean-color data (2007–2022), we show that marine phenology is variable and asymmetric. In high la...

An automated operon refactoring workflow for heterologous expression of non-ribosomal peptide biosynthetic gene clusters

Microbial genomes encode numerous biosynthetic gene clusters, yet most remain experimentally uncharacterized, particularly large non-ribosomal peptide synthetase (NRPS) clusters that resist conventional cloning. Existing refactoring approaches are labor-intensive, depend on de no...

A source-to-sea decision-support framework for wet-weather wastewater load management: evidence from Jiaozhou Bay

Coastal concentration compliance can overlook increased wastewater throughput during wet weather. We developed a source-to-sea decision-support framework using 2019–2022 wastewater, river, and marine observations from Jiaozhou Bay, China. The analysis combined source-record audit...

Neooleiphilus portus gen. nov., sp. nov. and Paroleiphilus aggregans gen. nov., sp. nov., Two Novel Nitrate-Reducing Bacteria Isolated from Estuarine Sediments

Two novel bacteria, designated strain G1-8T and J1-3T, were isolated from estuarine sediment samples collected from Jinjiang Estuary, Fujian Province, China, using the dilution-to-extinction method. Cells of strain G1-8T were Gram-stain-negative, aerobic, rod-shaped with a single...

Shallow water bathymetry based on seafloor classification and active–passive data

High-accuracy bathymetric data are crucial for navigation safety, as well as for research on coastal ecosystems and related fields. In this regard, optical passive bathymetric inversion is limited by its in-situ measurement data requirement and that it fails to consider the inhom...

Summer Marginal Ice Zone: A Potential Predictor for September Arctic Sea Ice Extent

Abstract The Arctic summer marginal ice zone (MIZ) represents a growing fraction of total sea ice extent (SIE), yet its predictive performance for September Arctic sea ice remains unknown. This study reveals that summer (June–August) MIZ area fraction is an optimal predictor for...

Enhancing Coastal Safety with AI: A Lightweight Deep Learning Framework for Rip Current Segmentation via Architectural Co-Design and Model Compression

Rip currents pose significant threats to coastal safety and to autonomous marine vehicles operating nearshore. However, deploying high-precision monitoring models on resource-limited platforms remains challenging. This paper proposes a comprehensive framework that combines a nove...

True Triaxial Physical Simulation Experiment on the Fracture Propagation Law of Hydraulic Fracturing for Horizontal Wells in the Roof of Soft and Low-Permeability Coal Seams

The key to exploiting coalbed methane in soft and low-permeability coal seams by deploying horizontal wells in roof strata lies in whether hydraulic fractures can propagate into the coal seam after initiating from the roof. True triaxial physical simulation experiments based on 1...

Deep-sea Microbial Dataset of the Antarctic Ocean (dsMDAO): A high-resolution deep-sea microbial dataset of the Antarctic Ocean reveals potential for taxonomic and functional diversity

Antarctic deep-sea ecosystems harboured unique and metabolically versatile micro-organisms that sustained key biogeochemical processes under extreme polar conditions. However, the genomic diversity and ecological functions of these sedimentary or deep-sea microbial communities re...

Surface-to-volume physics-informed model for 3D mesoscale eddy detection: Multi-source multi-scale fusion

Mesoscale eddies play a crucial role in the ocean, and accurate detection of their three-dimensional (3D) structures is essential for understanding marine dynamics. However, 3D eddy reconstruction remains challenging: traditional methods provide limited pixel-level boundary delin...

Flocculation behavior and kinetics of hematite regulated by corn starch with different molecular structures

Fine iron mineral recovery through flotation and magnetic separation increasingly relies on starch-based flocculation technologies; however, the relationship between starch molecular structure and flocculation dynamics remains insufficiently understood. Herein, the effects of cor...

A scene-mapped framework for deriving clear-sky surface longwave downward radiation from remotely sensed measurements

Accurate estimation of clear-sky surface longwave downward radiation (LWDR) is fundamental to surface energy budget studies, yet widely used parameterizations and conventional lookup-table (LUT) searches often suffer from regional biases and limited transferability. This study de...

A Four-Stage Morphodynamic Model for the Abandoned Subaqueous Diaokou Lobe of the Yellow River Delta (1976–2026): Semi-Quantitative Assessment of Natural and Anthropogenic Forcing Factors

Abandoned delta lobes worldwide face severe net erosion driven by chronic sediment starvation and intensifying marine hydrodynamic forcing, which poses pervasive threats to nearshore and offshore engineering infrastructure, particularly delta zones with dense subsea energy facili...