干旱区生态环境知识资源中心(Arid): Spatio-temporal analysis of urban changes and surface water quality

Arid

DOI	10.1016/j.jhydrol.2018.12.033
	Spatio-temporal analysis of urban changes and surface water quality
	Carstens, Dana; Amer, Reda
通讯作者	Amer, Reda
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	569 页码:720-734
英文摘要	The combination of remote sensing techniques and Geographic Information Systems (GIS) to measure water quality allows researchers to monitor changes in various water quality parameters over temporal and spatial scales that are not always readily apparent from in situ measurements. This study involves using Landsat images and in situ data within GIS to map urban expansion and its resulting influences on water quality in the Pontchartrain Basin over the last three decades. The Pontchartrain Basin is located in southeast Louisiana and covers an area of 25,000 km(2) that encompasses sixteen parishes east of the Mississippi River and four Mississippi Counties. A Landsat Thematic Mapper (TM) image from 1985 and a Landsat Operational Land Imager (OLI) image from 2015 were processed using the Spectral Angle Mapper (SAM) algorithm to map urban expansion. In order to estimate how water quality has changed in the Pontchartrain Basin between 1985 and 2015, in situ water quality data from the Louisiana Department of Environmental Quality was interpolated using Empirical Bayesian Kriging (EBK). Comparing urban expansion produced from SAM classification with urban indices, impervious surfaces were better identified and distinguished from other land cover features. The results of this study demonstrated that high levels of fecal coliform were consistent with increased urbanization in water bodies in the Pontchartrain Basin. Phosphorous levels were higher in 2015 compared to 1985 and were at levels high enough to lead to eutrophic conditions. Dissolved oxygen levels were lower near the mouth of the Mississippi river in 2015 than in 1985. The results indicated that urbanization has negative impact on water quality. The geospatial model is recommended to effectively manage and reduce the processing time of large water quality datasets.
英文关键词	Spatio-temporal Geospatial Landsat GIS Water quality Pontchartrain Basin Louisiana
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000457952900054
WOS关键词	CENTRAL EASTERN DESERT ; LAKE PONTCHARTRAIN ; NUTRIENT ; LAND ; SPILLWAY ; IMPACTS ; AREA
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217128
作者单位	Tulane Univ, Dept Earth & Environm Sci, New Orleans, LA 70118 USA
推荐引用方式 GB/T 7714	Carstens, Dana,Amer, Reda. Spatio-temporal analysis of urban changes and surface water quality[J],2019,569:720-734.
APA	Carstens, Dana,&Amer, Reda.(2019).Spatio-temporal analysis of urban changes and surface water quality.JOURNAL OF HYDROLOGY,569,720-734.
MLA	Carstens, Dana,et al."Spatio-temporal analysis of urban changes and surface water quality".JOURNAL OF HYDROLOGY 569(2019):720-734.