Effects of Hydrological Season on the Relationship between Land Use and Surface Water Quality

In recent decades, land use patterns have changed significantly in highly urbanized areas, which is usually linked with the spatial variation of surface water quality at the catchment scale, but little attention has been paid to how hydrological seasons affect this relationship. Taking Pudong New Ar...

Full description

Saved in:
Bibliographic Details
Published in:Water (Basel) 2023-07, Vol.15 (13), p.2351
Main Authors: Wang, Du, Huang, Ganping, Ding, Huizhi, Zhang, Xing, Wang, Han, Zhang, Zhuo, Li, Dingyi, Zhao, Jun
Format: Article
Language:English
Subjects:
Agricultural land
Analysis
Aquatic resources
Buffers
Catchment scale
China
Correlation analysis
Decision making
Environmental management
Environmental planning
Hydrology
Land use
Pollutants
Precipitation
Rainy season
Remote sensing
Seasons
Spatial variations
Surface water
Urban agriculture
Urban areas
Variables
Water quality
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In recent decades, land use patterns have changed significantly in highly urbanized areas, which is usually linked with the spatial variation of surface water quality at the catchment scale, but little attention has been paid to how hydrological seasons affect this relationship. Taking Pudong New Area of Shanghai, China, as an example, this paper evaluated the influence of hydrological seasons on the relationship between land use and water quality under different hydrological buffers. It was shown that the contribution of land use to the spatial variation of water quality is approximately 30%. In addition, the explanatory ability was greatest in the average season while it was smaller in the dry and wet seasons. Land uses showed scale effects; at a smaller scale, urban areas, agricultural land and water areas were the most important land uses affected by water quality. As the buffers changed from 500 to 1500 m, the impact of urban areas decreased significantly, while that of agricultural land and water areas increased rapidly; however, when the buffer was greater than 1000 m, the explanatory ability of water areas did not increase further but remained stable. Green space is only significant at the 200 m and 500 m scales, which showed the effect of improving river quality. This study is expected to provide references for future decision making of urban construction, environmental planning and management.
ISSN:2073-4441
2073-4441
DOI:10.3390/w15132351