Seasonal variations of water quality response to land use metrics at multi-spatial scales in the Yangtze River basin

被引:16
|
作者
Xu, Jiahui [1 ]
Liu, Rui [1 ,2 ]
Ni, Maofei [3 ]
Zhang, Jing [1 ]
Ji, Qin [1 ]
Xiao, Zuolin [1 ]
机构
[1] Chongqing Normal Univ, Key Lab GIS Applicat Res, Chongqing 401331, Peoples R China
[2] Chongqing Comprehens Econ Res Inst, Chongqing 401147, Peoples R China
[3] Guizhou Minzu Univ, Coll Ecoenvironm Engn, Guiyang 550025, Peoples R China
基金
中国国家自然科学基金;
关键词
Riverine water quality; Land use metrics; Multi-spatial scales; The Yangtze River basin; LANDSCAPE PATTERN; COVER; CHINA; AREA;
D O I
10.1007/s11356-021-13386-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Land use pattern is increasingly regarded as an important determinant of environmental quality and regional ecosystems. Understanding the correlation between land use metrics and water quality is essential to improve water pollution prediction and provide guidance for land use planning. Here, we examined the land use metrics and water quality parameters (i.e., dissolved oxygen, DO; pH; ammonia nitrogen NH4+-N; permanganate index, CODMn), as well as their relationships in the Yangtze River basin. The DO and pH exhibited the notable spatio-temporal variability, suggesting that anthropogenic land uses (farmland and urban land) greatly impacted riverine water quality. The catchment and riparian scales respectively showed a high potential in explaining water quality in the dry and wet seasons. The land use metrics were tightly linked to water quality in the dry season, indicating that intensive farming activities led to high loadings of agriculture-related chemicals and thus water quality deterioration. Our results provided useful information regarding riverine water quality response to land use metrics at multi-spatial scales.
引用
收藏
页码:37172 / 37181
页数:10
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