Climate Change Data Portal
DOI | 10.1016/j.jenvman.2018.02.049 |
Composite measures of watershed health from a water quality perspective | |
Mallya, Ganeshchandra1; Hantush, Mohamed2; Govindaraju, Rao S.1 | |
发表日期 | 2018-05-15 |
ISSN | 0301-4797 |
卷号 | 214页码:104-124 |
英文摘要 | Water quality data at gaging stations are typically compared with established federal, state, or local water quality standards to determine if violations (concentrations of specific constituents falling outside acceptable limits) have occurred. Based on the frequency and severity of water quality violations, risk metrics such as reliability, resilience, and vulnerability (R-R-V) are computed for assessing water quality based watershed health. In this study, a modified methodology for computing R-R-V measures is presented, and a new composite watershed health index is proposed. Risk-based assessments for different water quality parameters are carried out using identified national sampling stations within the Upper Mississippi River Basin, the Maumee River Basin, and the Ohio River Basin. The distributional properties of risk measures with respect to water quality parameters are reported. Scaling behaviors of risk measures using stream order, specifically for the watershed health (WH) index, suggest that WH values increased with stream order for suspended sediment concentration, nitrogen, and orthophosphate in the Upper Mississippi River Basin. Spatial distribution of risk measures enable identification of locations exhibiting poor watershed health with respect to the chosen numerical standard, and the role of land use characteristics within the watershed. (C) 2018 Elsevier Ltd. All rights reserved. |
英文关键词 | Reliability;Resilience;Vulnerability;Watershed health;Scaling;Trend analysis;Water quality;Stream networks |
语种 | 英语 |
WOS记录号 | WOS:000430646600012 |
来源期刊 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
![]() |
来源机构 | 美国环保署 |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/58289 |
作者单位 | 1.Purdue Univ, Lyles Sch Civil Engn, W Lafayette, IN 47907 USA; 2.US EPA, Natl Risk Management Res Lab, Cincinnati, OH 45268 USA |
推荐引用方式 GB/T 7714 | Mallya, Ganeshchandra,Hantush, Mohamed,Govindaraju, Rao S.. Composite measures of watershed health from a water quality perspective[J]. 美国环保署,2018,214:104-124. |
APA | Mallya, Ganeshchandra,Hantush, Mohamed,&Govindaraju, Rao S..(2018).Composite measures of watershed health from a water quality perspective.JOURNAL OF ENVIRONMENTAL MANAGEMENT,214,104-124. |
MLA | Mallya, Ganeshchandra,et al."Composite measures of watershed health from a water quality perspective".JOURNAL OF ENVIRONMENTAL MANAGEMENT 214(2018):104-124. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。