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Exploration of establishing a robust intergovernmental benefit compensation mechanism for water source areas holds significant importance in promoting regional coordinated development. Taking the Guanting Reservoir basin, a water source area in Beijing, China, as an example, we established an ecological location model with urban water sources as the core by drawing on the concept of spatial circle structure in traditional location theory. Based on this, we proposed the theory of ecological cost of water source land level difference and analyzed the basic composition of ecological cost of water source land. Finally, the differential ecological costs method was used to estimate the ideal horizontal eco-compensation funds between the downstream city of the water source (Beijing) and the upstream city (Zhangjiakou). The results are as follows: (1) the closer to the water source reservoir area and the higher the protection zone level, the greater the contribution of the ecological product value realization and the ecological protection costs to the protection of water resources in the reservoir area. (2) The compensation funds for water source areas are jointly composed of the increment of ecological product value and protection costs. (3) In 2021, the value addition of ecological products in the upstream region was 3.075 billion yuan, and the protection cost was 6.702 billion yuan. After multiplying by the differential adjustment coefficient, the horizontal eco-compensation amount that the upstream cities should receive in 2021 is 4.194 billion yuan. This study theoretically addresses the shortcomings of traditional ecological compensation, which overlooked differences in resource and environmental costs due to variations in ecological functional location. It provides a new perspective for further exploring the role of location theory in addressing inter-governmental interest coordination issues in cross-border water source areas.
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http://dx.doi.org/10.1016/j.heliyon.2024.e35412 | DOI Listing |
An Acad Bras Cienc
September 2025
Federal University of Minas Gerais, Department of Sanitary and Environmental Engineering, 6627, Antônio Carlos Avenue, Campus Pampulha, 31270-010 Belo Horizonte, MG, Brazil.
Micro- and nanoplastics (MNPs) are emerging contaminants increasingly recognized for their environmental and health implications. While surface water systems have been extensively studied, the presence, behavior, and impacts of MNPs in groundwater remain underexplored, despite its critical role as water source worldwide. The findings in this review highlight that agricultural activities, particularly plastic mulches, pesticides containers, fertilizer bags, greenhouses, are major sources of MNP.
View Article and Find Full Text PDFFoodborne Pathog Dis
September 2025
Public Health Agency of Canada, National Microbiology Laboratory, Guelph, Canada.
is a human-specific protozoan parasite that causes gastrointestinal illness, primarily through the ingestion of contaminated water or fresh produce. This study provides an epidemiological overview of cyclosporiasis in Canada from 2000 to 2022 using data from the Canadian Notifiable Disease Surveillance System, FoodNet Canada, and outbreak investigations. A total of 5337 cases were reported during this period, with the incidence increasing from 0.
View Article and Find Full Text PDFOrg Lett
September 2025
College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei 443002, P. R. China.
A novel copper-catalyzed radical cross-coupling reaction for the thioesterification of polyfluoroarenes is developed using KS and aldehydes in water. This protocol employs a readily available KS as a sulfur source, eliminating the need for hazardous thiols and organic solvents. The mild reaction conditions are compatible with a wide range of functional groups, providing access to diverse polyfluoroaryl thioesters.
View Article and Find Full Text PDFMol Biol Rep
September 2025
Department of Biosciences, Integral University, Kursi Road, Lucknow, 226026, India.
Background: The river ecosystems provide habitats and source of water for a number of species including humans. The uncontrolled accumulation of pollutants in the aquatic environment enhances the development of antibiotic-resistant bacteria and genes.
Methods: Water samples were collected seasonally from different sites of Gomti and Ganga River.
Food Prot Trends
June 2025
Dept. of Food, Nutrition, and Packaging Sciences, 220 Poole Agriculture Center, Clemson University, Clemson, SC 29634, USA.
Surface sanitation is used to mitigate the transmission of infectious agents and is the collective process of washing a surface then rinsing it with potable water to remove debris and residual cleaning agent. If necessary and depending on surface type, contamination event, or regulatory requirement, an antimicrobial agent (chemical sanitizer or disinfectant) registered with the Environmental Protection Agency or heat (steam or hot water) can be applied to the surface to reduce or inactivate pathogenic microorganisms. The absence of universally defined terms and regulations pertaining to the various stages of surface sanitation has resulted in confusion, potentially leading to inadequate sanitation practices and persistent surface contamination.
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