DOI: 10.1016/j.marpolbul.2014.11.010
Scopus记录号: 2-s2.0-84961337804
论文题名: Three decadal inputs of total organic carbon from four major coastal river basins to the summer hypoxic zone of the Northern Gulf of Mexico
作者: He S. ; Xu Y.J.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2015
卷: 90, 期: 2018-01-02 起始页码: 121
结束页码: 128
语种: 英语
英文关键词: Coastal water quality
; Gulf of Mexico
; Louisiana
; Riverine input
; Total organic carbon
Scopus关键词: Agriculture
; Carbon
; Coastal zones
; Land use
; Rivers
; Water quality
; Watersheds
; Coastal water quality
; Gulf of Mexico
; Louisiana
; Riverine input
; Total Organic Carbon
; Organic carbon
; nitrogen
; organic carbon
; phosphorus
; coastal water
; marine pollution
; pollutant transport
; river basin
; river discharge
; river pollution
; total organic carbon
; water quality
; watershed
; agriculture intensive watershed
; Article
; autumn
; coastal waters
; environmental aspects and related phenomena
; environmental parameters
; forest pasture dominated watershed
; Gulf of Mexico
; hydrology
; land use
; nutrient flux
; nutrition
; river basin
; seasonal variation
; spring
; summer
; summer hypoxic zone
; total organic carbon
; total organic carbon flux
; trend study
; United States
; watershed
; winter
; Atlantic Ocean
; Gulf of Mexico
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: This study investigated long-term (1980-2009) yields and variability of total organic carbon (TOC) from four major coastal rivers in Louisiana entering the Northern Gulf of Mexico where a large-area summer hypoxic zone has been occurring since the middle 1980s. Two of these rivers drain agriculture-intensive (>40%) watersheds, while the other two rivers drain forest-pasture dominated (>50%) watersheds. The study found that these rivers discharged a total of 13.0×104t TOC annually, fluctuating from 5.9×104 to 22.8×104t. Seasonally, the rivers showed high TOC yield during the winter and early spring months, corresponding to the seasonal trend of river discharge. While river hydrology controlled TOC yields, land use has played an important role in fluxes, seasonal variations, and characteristics of TOC. The findings fill in a critical information gap of quantity and quality of organic carbon transport from coastal watersheds to one of the world's largest summer hypoxic zones. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/86352
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, LA, United States
Recommended Citation:
He S.,Xu Y.J.. Three decadal inputs of total organic carbon from four major coastal river basins to the summer hypoxic zone of the Northern Gulf of Mexico[J]. Marine Pollution Bulletin,2015-01-01,90(2018-01-02)