Journal of Food, Agriculture and Environment

Vol 8, Issue 1,2010
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Influence of land use on nitrate concentrations in baseflow in a rural watershed of Three Gorges Reservoir Area, China


M.L. Feng, R.G. Hu *, S. Lin, S. Malghani, I. Javed

Recieved Date: 2009-09-19, Accepted Date: 2009-12-29


In this paper, the relationships between nitrate (NO3--N) concentrations in baseflow and land use were studied in a rural watershed of Three Gorges Reservoir Area from 2004 to 2006. The results indicated that NO3--N concentrations ranged from 0.4 to 14.6 mg L-1 and were significantly higher in autumn and winter. Analysis of variance indicated that there was significant difference in NO3--N concentrations among seasons and sampling points. In addition, an interannual increasing trend was found in the study period. Moreover, regression analysis revealed that NO3--N concentrations significantly correlated with the proportions of paddy field and orchard in the subwatersheds, while Woodland had positive effect for preventing NO3--N loss. Paddy field has more contribution to NO3--N concentrations compared to other land use types. The results indicted that the baseflow is one of major pathway of NO3--N losses, and agricultural land use strongly influences NO3--N concentration in stream water in rural watersheds of Three Gorges Area. Therefore, it is indispensable to adjust land use structure and agricultural activities for water source protection in Three Gorges Reservoir Area, China.


Nitrate concentration, land use, baseflow, rural watershed, Three Gorges Reservoir

Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 1
Category: Environment
Pages: 332-337

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :