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Aggregating land use quantity and intensity to link water quality in upper catchment of Miyun Reservoir
Xu, Erqi; Zhang, Hongqi
2016-07-01
Source PublicationECOLOGICAL INDICATORS
ISSN1470-160X
Volume66Pages:329-339
Corresponding AuthorZhang, Hongqi(zhanghq@igsnrr.ac.cn)
AbstractEutrophication resulting from nutrient enrichment decreases water quality and harms ecosystem structure and function, and its degree is significantly affected by land use in the catchment. Quantifying the relationship between eutrophication and land use can help effectively manage land use to improve water quality. Previous studies principally utilized land use quantity as an indicator to link water quality parameters, but these studies lacked insight into the impact of land use intensity. Taking the upper catchment of Miyun Reservoir as a case study, we developed a method of aggregating land use quantity and intensity to build a new land use indicator and tested its explanatory power on water quality. Six nutrient concentrations from 52 sub-watersheds covering the whole catchment were used to characterize the spatial distribution of eutrophication. Based on spatial techniques, empirical conversion coefficients, remote sensing data, and socio-economic statistical data, land use intensity was measured and mapped visually. The new land use indicator was calculated and linked to nutrient concentrations by Pearson correlation coefficients. Results demonstrated that our new indicator incorporating intensity information can quantify the different nutrient-exporting abilities of different land use areas. Compared to traditional indicators that only incorporate land use quantity, most Pearson correlation coefficients between the new indicator and water nutrient concentrations increased. This new information enhanced the explanatory power of land use on water nutrient concentrations, and so will be able to help us understand the impact of land use on water quality and guide decision making for better land use management. (C) 2016 Elsevier Ltd. All rights reserved.
KeywordLand use intensity Land use quantity Water eutrophication Miyun Reservoir
DOI10.1016/j.ecolind.2016.02.002
WOS KeywordAGRICULTURAL INTENSIFICATION ; MODELING APPROACH ; RURAL CATCHMENT ; SURFACE WATERS ; COVER ; NITROGEN ; PHOSPHORUS ; EXPORT ; CHINA ; AREA
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China (973 Program)[2015CB452702] ; Director Innovation Fund - Institute of Geographical Sciences and Natural Resources Research
Funding OrganizationNational Basic Research Program of China (973 Program) ; Director Innovation Fund - Institute of Geographical Sciences and Natural Resources Research
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecology
WOS SubjectBiodiversity Conservation ; Environmental Sciences
WOS IDWOS:000388912300036
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/65371
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. Aggregating land use quantity and intensity to link water quality in upper catchment of Miyun Reservoir[J]. ECOLOGICAL INDICATORS,2016,66:329-339.
APA Xu, Erqi,&Zhang, Hongqi.(2016).Aggregating land use quantity and intensity to link water quality in upper catchment of Miyun Reservoir.ECOLOGICAL INDICATORS,66,329-339.
MLA Xu, Erqi,et al."Aggregating land use quantity and intensity to link water quality in upper catchment of Miyun Reservoir".ECOLOGICAL INDICATORS 66(2016):329-339.
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