主题词：Soil Carbon and Nitrogen Dynamics; Heavy metals in environment; Soil erosion and sediment transport; Soil and Water Nutrient Dynamics; Soil and Unsaturated Flow; Microbial Community Ecology and Physiology; Clay minerals and soil interactions; Toxic Organic Pollutants Impact; Hydrology and Sediment Transport Processes; Peatlands and Wetlands Ecology; Hydrology and Watershed Management Studies; Geochemistry and Geologic Mapping; Environmental Toxicology and Ecotoxicology; Mine drainage and remediation techniques; Geochemistry and Elemental Analysis; Pharmaceutical and Antibiotic Environmental Impacts; Pesticide and Herbicide Environmental Studies; Microbial bioremediation and biosurfactants; Coastal wetland ecosystem dynamics; Soil Geostatistics and Mapping; Arsenic contamination and mitigation; Geology and Paleoclimatology Research; Wastewater Treatment and Nitrogen Removal; Phosphorus and nutrient management; Chromium effects and bioremediation