Ministry of Water Resources of the People's Republic of China

From acquisition to recycling: Vegetation restoration reshapes microbial nitrogen-cycling strategies in a semi-arid sandy land

Reestablishing nitrogen (N) cycling is critical for stabilizing ecosystems in semi-arid sandy lands, yet the microbial mechanisms driving functional reorganization during vegetation restoration remain unclear. This study investigated the coupling of soil physicochemical propertie...

Optimizing calcium hydroxide addition during wheat straw ammoniation enhances straw decomposition and nitrogen release, improving summer maize yield

Context and objective In winter wheat–summer maize rotations, wheat straw decomposition overlaps with early maize growth, and slow decomposition may reduce the benefits of straw incorporation and constrain yield formation. Ammoniation improves straw decomposability, but quantitat...

Investigation of Failure Mechanisms and Performance Optimization of Channel Seepage Control Layers in Cold Regions Under Coupled Wetting, Drying, Freezing, and Thawing Cycles

To address the degradation of seepage-control linings and structural instability of water-conveyance channels under coupled wetting-drying-freeze-thaw conditions in cold regions, this study investigated rehabilitated channels founded on expansive mudstone in northern Xinjiang. A...

Sedimentary Environment and Organic Matter Enrichment of Shale under Tectonic-Depositional Differentiation from the Lower Cambrian Niutitang Formation Guizhou, South China

Abstract To investigate variations in depositional environments and organic matter (OM) enrichment across different tectonic deformation zones, this study analyzed samples from three wells with contrasting deformation intensities: QinX1 (strongly deformed), YF1 (moderately deform...

Hydrochemical Characteristics and Potential Health Risk Assessments of Groundwater Resources in the Yinchuan Plain, China

Groundwater quality is a critical factor constraining the sustainable and healthy development of the economy, particularly in regions with scarce water resources. Given the combined influences of natural processes and human activities, understanding the hydrochemical evolution an...

A Data-Driven Framework for Characterizing Nonlinear Responses of River Ice Growth and Decay in the Shisifenzi Reach of the Upper Yellow River

The Shisifenzi Reach, with its sharp curvature, serves as a prime observational target for river ice research in the Upper Yellow River. Using six winter seasons (2020–2026) of monitoring data, this study developed a Random Forest with SHAP and Accumulated Local Effects (ALE) to...

Identification of flood routing characteristics and vulnerability in complex river networks

To investigate flood routing mechanisms in the Northern Branch of the Daqing River Basin, this study constructed a coupled 1D-2D hydrodynamic model incorporating geospatial datasets and historical flood records. The model performance was validated against remote sensing-derived i...

An improved SCF‑SWE relationship function with topographic controls for enhanced snowmelt runoff simulation

Study region The Yarlung Zangbo River Basin (YZRB), a representative high‑altitude alpine‑glacial basin in Xizang, southwestern China. Study focus To improve the snowmelt runoff simulation accuracy of the EasyDHM (Easy Distributed Hydrological Model) in the YZRB, this study propo...

Contrasting Nitrate Sources and Transport Pathways in a Connected Karst Surface Water and Groundwater System

Nitrate contamination threatens surface water and groundwater quality in karst regions, posing risks to drinking water safety and aquatic ecosystems. Strong surface water–groundwater connectivity in karst recharge areas can accelerate contaminant transport through fractures and c...

Acidification States and Controlling Factors in Subsurface and Bottom Water of the Beibu Gulf, China

Previous studies in the Beibu Gulf have documented the distributions and controlling factors of carbonate system parameters in surface waters; however, their dynamics in subsurface and bottom waters remain poorly constrained. Here, we present the first observations of pH and the...

TFCRNet: Dual-Discriminator SAR-to-Optical Translation and Region-Gated Cross-Attention Fusion for Thick-Cloud Removal

Thick-cloud contamination severely limits the usability of optical remote sensing imagery because cloud-covered regions may suffer from complete loss of surface information. Synthetic aperture radar (SAR) imagery provides complementary structural cues due to its cloud-penetrating...

Diverse microbial communities support multiple patterns of functional redundancy in tidal flats across the Chinese coastline

Tidal flats are critical transitional ecosystems in which microbial communities drive essential biogeochemical processes while adapting to strong environmental fluctuations. However, the mechanisms by which these communities maintain functional stability in highly dynamic tidal-f...

Environmental DNA Metabarcoding Reveals the Variations in Fish Diversity Across the Yangtze River Basin and the Effects of the Three Gorges Dam

It is imperative that freshwater fish biodiversity research incorporates diverse components, encompassing taxonomy, phylogeny and function, alongside multifaceted facets, including richness, divergence and regularity. This comprehensive approach is essential to facilitate a more...

HiFi-Det: Collaborative Multi-Scale Frequency-Domain Feature Optimization for Crown-of-Thorns Starfish Detection in Complex Underwater Environments

Outbreaks of the Crown-of-Thorns Starfish (COTS, Acanthaster spp.) are a leading biological driver of coral cover loss, making timely and accurate population monitoring essential for reef management. Conventional diver-based surveys are labor-intensive and prone to missed detecti...

Seasonal variations of soil water vapor distribution transport and phase transition in the loess unsaturated zone from fixed volume monitoring

Abstract Water vapor is a crucial yet often overlooked water resource in the soil’s unsaturated zone of arid and semi-arid regions. Understanding water vapor behavior in the soil’s unsaturated zone is crucial for research on soil and energy balance, vegetation water stress, and w...

Response of yield, water and fertilizer use efficiency of sweet potato to different drip fertigation regimes under mulching conditions in a humid region of East China

Developing precise irrigation and fertilization regimes is essential for sustaining sweet potato productivity, particularly in humid regions where rainfall variability complicates soil nutrient and water resource management. A two-year field experiment was conducted to investigat...

Influence Mechanisms of Spatial Optimization of the “Terraced Fields‐Gully Land Reclamation Project ( GLRP )” Cascades on Erosion‐Transportation Processes in Watershed in the Loess Hilly‐Gully Region of China

ABSTRACT Terraced fields and the Gully Land Reclamation Project (GLRP) are important soil and water conservation measures, widely constructed in China's Loess Plateau and other ecologically fragile areas in the world. However, under large‐scale governance scenarios, the impacts o...