Journal article

Linking rice agriculture to nutrient chemical composition, concentration and mass flux in catchment streams in subtropical central China

Yi Wang, Yong Li, Feng Liu, Yuyuan Li, Lifang Song, Hang Li, Cen Meng, Jinshui Wu

AGRICULTURE ECOSYSTEMS & ENVIRONMENT | ELSEVIER SCIENCE BV | Published : 2014

Abstract

Widespread agricultural nutrient pollution, particularly nitrogen (N) and phosphorus (P), has challenged ecologists to determine how agricultural land use affects water quality. One forest and five rice agricultural catchments in a typical hilly red soil catchment in subtropical central China were investigated from 2010 to 2012 to evaluate and quantify the connections between rice agriculture and nutrients in catchment streams. The results indicated moderate nutrient pollution in all studied catchments. Nitrate-N (NO3--N) and dissolved P (DP) were the main species of N and P in stream water, contributing 63.4% and 58.1% to the total N (TN) and total P (TP), respectively. The proportions of a..

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Grants

Awarded by National Basic Research Program of China


Awarded by National Natural Science Foundation of China


Funding Acknowledgements

The National Basic Research Program of China (2012CB417105) and the National Natural Science Foundation of China (41201220) are acknowledged for providing financial support for this study. The authors thank Mr. Weidong Zhang for his contribution to the fieldwork. The authors also thank the two anonymous reviewers for their valuable criticisms and comments, which led to substantial improvements in this paper.