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A model for integrated spatial land use characteristics linking to surface nutrient concentration
Xu, Erqi; Zhang, Hongqi
2018
Source PublicationINTERNATIONAL JOURNAL OF DIGITAL EARTH
ISSN1753-8947
Volume11Issue:10Pages:1064-1084
Corresponding AuthorZhang, Hongqi(zhanghq@igsnmac.cn)
AbstractQuantifying land use heterogeneity helps better understand how a influences biophysical systems. Land use area proportions have been used conventionally to predict water quality variables. Lacking an insight into the combined effect of various spatial characteristics could lead to the statistical bias and confused understanding in previous studies. In this study, using spatial techniques and mathematical models, a diagnostic model was developed and applied for quantifying and incorporating three spatial components, namely, slope, distance to sampling spots, and arrangement. The upper catchment of Miyun Reservoir was studied as the test area. Total nitrogen, total phosphorus, and chemical oxygen demand of water samples from field measurements were used to characterize the surface water quality in 52 sub-watersheds. Using parameter calibrations and determinations, combined spatial characteristics were explored and detected. Adjusted land use proportions were calculated by spatial weights of discriminating the relative contribution of each location to water quality and used to build the integrated models. Compared with traditional methods only using area proportions, our model increased the explanatory power of land use and quantified the effects of spatial information on water quality. This can guide the optimization of land use configuration to control water eutrophication.
KeywordSpatial distance spatial arrangement land use water eutrophication
DOI10.1080/17538947.2017.1373868
WOS KeywordNONPOINT-SOURCE POLLUTION ; STREAM WATER-QUALITY ; AGRICULTURAL CATCHMENTS ; FORESTED WATERSHEDS ; SCALE-DEPENDENCE ; RIPARIAN BUFFERS ; USE INTENSITY ; LANDSCAPE ; RIVER ; COVER
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China (973 Program)[2015CB452702] ; National Natural Science Foundation of China[41371116]
Funding OrganizationNational Basic Research Program of China (973 Program) ; National Natural Science Foundation of China
WOS Research AreaPhysical Geography ; Remote Sensing
WOS SubjectGeography, Physical ; Remote Sensing
WOS IDWOS:000442755000006
PublisherTAYLOR & FRANCIS LTD
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54341
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhang, Hongqi
AffiliationChinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Xu, Erqi,Zhang, Hongqi. A model for integrated spatial land use characteristics linking to surface nutrient concentration[J]. INTERNATIONAL JOURNAL OF DIGITAL EARTH,2018,11(10):1064-1084.
APA Xu, Erqi,&Zhang, Hongqi.(2018).A model for integrated spatial land use characteristics linking to surface nutrient concentration.INTERNATIONAL JOURNAL OF DIGITAL EARTH,11(10),1064-1084.
MLA Xu, Erqi,et al."A model for integrated spatial land use characteristics linking to surface nutrient concentration".INTERNATIONAL JOURNAL OF DIGITAL EARTH 11.10(2018):1064-1084.
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