Back to Search
Start Over
Modeling Land Use Changes and their Impacts on Non-Point Source Pollution in a Southeast China Coastal Watershed
- Source :
- International Journal of Environmental Research and Public Health, Vol 15, Iss 8, p 1593 (2018), International Journal of Environmental Research and Public Health, Volume 15, Issue 8
- Publication Year :
- 2018
- Publisher :
- MDPI AG, 2018.
-
Abstract
- Changes in landscape patterns in a river basin play a crucial role in the change on load of non-point source pollution. The spatial distribution of various land use types affects the transmission of non-point source pollutants on the basis of source-sink theory in landscape ecology. Jiulong River basin in southeast of China was selected as the study area in this paper. Aiming to analyze the correlation between changing landscape patterns and load of non-point source pollution in this area, traditional landscape metrics and the improved location-weighted landscape contrast index based on the minimum hydrological response unit (HRULCI) were applied in this study, in combination with remote sensing and geographic information system (GIS) technique. The results of the landscape metrics showed the enhanced fragmentation extent and the decreasing polymerization degree of the overall landscape in the watershed. High values of HRULCI were concentrated in cultivated land, while low HRULCI values mostly appeared in forestland, indicating that cultivated land substantially enhanced non-point source pollution, while forestland inhibited the pollution process.
- Subjects :
- Pollution
China
Watershed
Geographic information system
010504 meteorology & atmospheric sciences
Health, Toxicology and Mutagenesis
media_common.quotation_subject
Drainage basin
lcsh:Medicine
010501 environmental sciences
Forests
01 natural sciences
geographic factors
Article
HRULCI
Rivers
Environmental monitoring
landscape pattern
Nonpoint source pollution
0105 earth and related environmental sciences
media_common
geography
geography.geographical_feature_category
non-point source pollution
Land use
business.industry
lcsh:R
Public Health, Environmental and Occupational Health
Models, Theoretical
Geographic Information Systems
Environmental science
Landscape ecology
Water resource management
business
Environmental Monitoring
Subjects
Details
- Language :
- English
- ISSN :
- 16604601
- Volume :
- 15
- Issue :
- 8
- Database :
- OpenAIRE
- Journal :
- International Journal of Environmental Research and Public Health
- Accession number :
- edsair.doi.dedup.....2c0818226cfe71f43fb9935098aaa498