BIOMAT Database Logo BIOMAT Database Logo

Applying water environment capacity to assess the non-point source pollution risks in watersheds. 2023

Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China; College of Environment, Hohai University, Nanjing 210098, China.

Comprehension of the spatial and temporal characteristics of non-point source (NPS) pollution risk in watersheds is essential for NPS pollution research and scientific management. Although the concept of water functional zones (WFZ) has been considered in the NPS pollution risk assessment process. However, no comprehensive study of the NPS pollution risk has been conducted to effectively protect water quality in watersheds with different water environment capacity. Therefore, this study proposes a new NPS pollution risk assessment method that integrates water functional zoning, receiving water body environmental capacity, and space-time distribution of pollution load for quantifying the impact of pollution discharge from sub-catchment on nearby water body quality. Based on the NPS nutrient loss process modeled by the Soil and Water Assessment Tool (SWAT), this method was used to assess the NPS pollution risk in the Le 'an River Watershed at annual and monthly scales. The results showed that the NPS pollution risk is characterized by seasonal and spatial variability and is influenced clearly by the water environment capacity. High NPS pollution loads are not necessarily high pollution risks. Conversely, a low NPS nutrient pollution load does not represent a low regional risk sensitivity. In addition, NPS risk assessment based on the water environment capacity could also distinguish the differences in risk levels that were masked by similar NPS pollutant loss and the same water function zoning to achieve accurate control of NPS pollution management in watersheds.

UI MeSH Term Description Entries
D009584 Nitrogen An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.
D010758 Phosphorus A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions. Black Phosphorus,Phosphorus-31,Red Phosphorus,White Phosphorus,Yellow Phosphorus,Phosphorus 31,Phosphorus, Black,Phosphorus, Red,Phosphorus, White,Phosphorus, Yellow
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D004784 Environmental Monitoring The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment. Monitoring, Environmental,Environmental Surveillance,Surveillance, Environmental
D000075602 Non-Point Source Pollution Water pollution from a variety of diffuse sources carried over or through the ground and into water sources such as LAKES; RIVERS; WETLANDS; coastal waters; and GROUNDWATER. Such diffuse sources include roadways and parking lots (GASOLINE; HEAVY METALS; and motor oil), lawns or agricultural land (excess FERTILIZERS, livestock excrement, and PESTICIDES), landfill seepage, and construction sites (chemicals and trash used in construction processes). Nonpoint Source Pollution,Non Point Source Pollution,Pollution, Non-Point Source,Pollution, Nonpoint Source,Source Pollution, Non-Point,Source Pollution, Nonpoint
D014874 Water Pollutants, Chemical Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water. Chemical Water Pollutants,Landfill Leachate,Leachate, Landfill,Pollutants, Chemical Water
D014876 Water Pollution Contamination of bodies of water (such as LAKES; RIVERS; SEAS; and GROUNDWATER.) Thermal Water Pollution,Water Pollution, Thermal,Pollution, Thermal Water,Pollution, Water,Pollutions, Thermal Water,Pollutions, Water,Thermal Water Pollutions,Water Pollutions,Water Pollutions, Thermal
D045483 Rivers Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean). Streams,River,Stream
D060753 Water Quality A rating of a body of water based on measurable physical, chemical, and biological characteristics. Quality, Water

Related Publications

Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Relating landscape characteristics to non-point source pollution in mine waste-located watersheds using geospatial techniques.
January 2007, Journal of environmental management,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Accounting for the annual variability when assessing non-point source pollution potential in Mediterranean regulated watersheds.
December 2023, The Science of the total environment,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Nonpoint source versus point source water pollution.
November 2020, Water environment research : a research publication of the Water Environment Federation,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
[Research progress on non-point source pollution models for semi-arid and semi-humid watersheds].
February 2020, Ying yong sheng tai xue bao = The journal of applied ecology,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Using river sediments to analyze the driving force difference for non-point source pollution dynamics between two scales of watersheds.
August 2018, Water research,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Framework of multi-level regionalization schemes based on non-point source pollution to advance the environmental management of small watersheds.
June 2021, Environmental science and pollution research international,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
A novel approach combining self-organizing map and parallel factor analysis for monitoring water quality of watersheds under non-point source pollution.
November 2015, Scientific reports,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Water Environmental Capacity Calculated Based on Point and Non-Point Source Pollution Emission Intensity under Water Quality Assurance Rates in a Tidal River Network Area.
February 2019, International journal of environmental research and public health,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
Simulating the evolution of non-point source pollutants in a shallow water environment.
March 2007, Chemosphere,
Yuanyuan Li, and Hua Wang, and Yanqing Deng, and Dongfang Liang, and Yiping Li, and Qihui Gu
[Study on water quality monitoring scheme based on non-point source pollution].
June 2013, Huan jing ke xue= Huanjing kexue,
Copied contents to your clipboard!