Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2017WR022172 |
What Are the Key Catchment Characteristics Affecting Spatial Differences in Riverine Water Quality? | |
Lintern, A.1,2; Webb, J. A.1; Ryu, D.1; Liu, S.1; Waters, D.3; Leahy, P.4; Bende-Michl, U.5; Western, A. W.1 | |
2018-10-01 | |
发表期刊 | WATER RESOURCES RESEARCH |
ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:10页码:7252-7272 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | This study uses water-quality data collected over 20 years, from 102 predominantly rural sites across Victoria, Australia, to further our understanding of spatial variability in riverine water quality. We focus on concentrations of total suspended solids, total phosphorus, filterable reactive phosphorus, total Kjeldahl nitrogen, nitrate/nitrite (NO,), and electrical conductivity. We used an exhaustive search approach to identify the linear models that best link catchment characteristics to time-averaged constituent concentrations. We ran additional analyses to (1) assess the performance of these models under drought conditions, and (2) understand the key drivers of site-level variability (standard deviations) of constituent concentrations. Natural catchment characteristics appear to have a greater effect on spatial differences in average constituent concentrations. Performance of the statistical models of time-averaged constituent concentrations varied, and spatial variability in mean electrical conductivity levels could be more readily explained by catchment characteristics compared to more reactive nutrients. Notwithstanding, the models performed relatively well under varying hydrologic conditions for most constituents. As such, these models provide an insight into the key factors affecting spatial variability in average stream water-quality conditions. We also identified that hydrologic, climatic, and topographic characteristics of the catchment helped explain the spatial variability in temporal changes in constituents. After calibration and validation, these models of both average water quality and variability in water quality could be used to forecast stream water-quality responses to future land use, climate, or soil and land management changes. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000450726000009 |
WOS关键词 | WESTERN SIERRA-NEVADA ; LAND-USE ; STREAM WATER ; MODEL SELECTION ; TEMPORAL DYNAMICS ; MULTIYEAR DROUGHT ; SUSPENDED-SOLIDS ; FRESH-WATER ; NUTRIENT ; SEDIMENT |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21116 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Melbourne, Dept Infrastruct Engn, Parkville, Vic, Australia; 2.Monash Univ, Dept Civil Engn, Clayton, Vic, Australia; 3.Queensland Dept Nat Resources Mines & Energy, Toowoomba, Qld, Australia; 4.EPA Victoria, Appl Sci Directorate, Macleod, Vic, Australia; 5.Bur Meteorol, Canberra, ACT, Australia |
推荐引用方式 GB/T 7714 | Lintern, A.,Webb, J. A.,Ryu, D.,et al. What Are the Key Catchment Characteristics Affecting Spatial Differences in Riverine Water Quality?[J]. WATER RESOURCES RESEARCH,2018,54(10):7252-7272. |
APA | Lintern, A..,Webb, J. A..,Ryu, D..,Liu, S..,Waters, D..,...&Western, A. W..(2018).What Are the Key Catchment Characteristics Affecting Spatial Differences in Riverine Water Quality?.WATER RESOURCES RESEARCH,54(10),7252-7272. |
MLA | Lintern, A.,et al."What Are the Key Catchment Characteristics Affecting Spatial Differences in Riverine Water Quality?".WATER RESOURCES RESEARCH 54.10(2018):7252-7272. |
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