NDLI: Nitrogen and phosphorus budgets of the Changjiang River estuary

Content Provider	Springer Nature Link
Author	Li, Xiang’an Yu, Zhiming Song, Xiuxian Cao, Xihua Yuan, Yongquan
Copyright Year	2011
Abstract	Eutrophication has emerged as a key environmental problem in Chinese coastal waters, especially in the Changjiang (Yangtze) River estuary. In this area, large nutrient inputs result in frequent harmful algal blooms and serious hypoxia in bottom waters. Four cruises were made in the estuary in 2006 to assess the concentration and distribution of dissolved inorganic nitrogen (DIN) and phosphorus (DIP). The concentration of DIN decreased gradually in a linear relationship with salinity from the river mouth to outer waters, while DIP was relatively more dispersed. A modified box budget method was used to estimate nutrient fluxes in the estuary and its adjacent waters. Water and nutrient budgets as well as primary production and denitrification rates were estimated from the box budget model. Estimated water residence time in the estuary was about 11 d. The turbid mixing zone released 33% of DIN and 49% of DIP, while in the adjacent outer sea 17.9 mmol DIN/m2·d and 0.36 mmol DIP/m2·d were fixed. Dissolved inorganic phosphorus was imported from the deep open sea waters, supporting primary production and population growth in this zone. Net ecosystem production (NEP) was calculated at 38.2 mmol/m2·d in the outer estuary and the estimated rate (N-fixation minus denitrification) was negative (1.92 mmol/m2·d), implying that a large amount of input nitrogen was taken up by algae and recycled through denitrification in bottom water and sediment.
Starting Page	762
Ending Page	774
Page Count	13
File Format	PDF
ISSN	02544059
Journal	Chinese Journal of Oceanology and Limnology
Volume Number	29
Issue Number	4
e-ISSN	19935005
Language	English
Publisher	SP Science Press
Publisher Date	2011-07-10
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	nitrogen phosphorus nutrients transport budget model Changjiang (Yangtze) River estuary Oceanography
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Oceanography

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Nitrogen budget in the Changjiang River drainage area

Assessment of trophic status in Changjiang (Yangtze) River estuary

Numerical simulation of the transport and diffusion of dissolved pollutants in the changjiang (Yangtze) river estuary

Nutrient fluxes in the Changjiang River estuary and adjacent waters — a modified box model approach

Change of the Long-Term Nitrogen and Phosphorus in the Changjiang (Yangtze) River Estuary

A numerical study on water diversion ratio of the Changjiang (Yangtze) estuary in dry season

The relation between distribution of zooplankton and salinity in the Changjiang Estuary

The environment effect on fish assemblage structure in waters adjacent to the Changjiang (Yangtze) River estuary (1998–2001)

Concentrations and distribution of organochlorine pesticides in shellfish from Changjiang estuary

Nitrogen and phosphorus budgets of the Changjiang River estuary

Similar Documents

Nitrogen budget in the Changjiang River drainage area

Assessment of trophic status in Changjiang (Yangtze) River estuary

Numerical simulation of the transport and diffusion of dissolved pollutants in the changjiang (Yangtze) river estuary

Nutrient fluxes in the Changjiang River estuary and adjacent waters — a modified box model approach

Change of the Long-Term Nitrogen and Phosphorus in the Changjiang (Yangtze) River Estuary

A numerical study on water diversion ratio of the Changjiang (Yangtze) estuary in dry season

The relation between distribution of zooplankton and salinity in the Changjiang Estuary

The environment effect on fish assemblage structure in waters adjacent to the Changjiang (Yangtze) River estuary (1998–2001)

Concentrations and distribution of organochlorine pesticides in shellfish from Changjiang estuary

Nitrogen and phosphorus budgets of the Changjiang River estuary