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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
earth and planetary sciences
Surface water quality of factory-based and vegetable-based peri-urban areas in the Yangtze River Delta region, China
Catena, Volume 69, No. 1, Year 2007
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Description
Detailed surveys of surface water in two contrasting peri-urban areas in the Yangtze River Delta region of China were conducted to determine the distribution of heavy metals, nitrogen (N) and phosphorus (P) as well as the speciation of N and P. A factory-based (FB) area was compared with a vegetable-based (VB) area during the dry season. The concentrations of heavy metals in the surface water in the FB area were higher than those in the VB area, suggesting modest contamination of surface water with Zn, Cu, Cr and Pb but not Cd, from discharge of factory effluent in the FB area but not the VB area. Although total N (TN) and total P (TP) levels in the surface water were high in both areas, the surface water in the VB area had significantly higher levels of nitrate N (NO3-N), organic N (ON) and TN than those in the FB area. In both areas, the levels of water-soluble P (WP), organic P (OP) and TP were high in the river water that received municipal wastewater. The distribution of N and P species throughout the surface water system indicated that the NO3-N and ON mainly came from vegetable fields, while ammonium N (NH4-N), WP and OP were mainly from municipal wastewater. Treatment of municipal wastewater prior to discharge to reduce N and P by purification is recommended together with research and extension to develop more efficient use of N and P fertilizer by vegetable farmers. © 2006 Elsevier B.V. All rights reserved.
Authors & Co-Authors
Öborn, Ingrid
Sweden, Uppsala
Sveriges Lantbruksuniversitet
Wang, Hongjie
China, Beijing
Chinese Academy of Sciences
Pagella, TIMOTHY F.
United Kingdom, Bangor
Bangor University
Sinclair, Fergus
United Kingdom, Bangor
Bangor University
Statistics
Citations: 60
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1016/j.catena.2006.04.012
ISSN:
03418162
Research Areas
Environmental
Study Design
Cross Sectional Study