4.7 Article

Phosphorus losses from agricultural soils to surface waters in a small agricultural watershed

期刊

BIOSYSTEMS ENGINEERING
卷 109, 期 1, 页码 10-14

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biosystemseng.2011.01.009

关键词

-

向作者/读者索取更多资源

Phosphorus applications in excess of crop need have affected the concentrations of P in surface soil and caused losses of P by runoff in Korea. The transport of P in a small agricultural watershed, the Goseong-Cheon watershed, Gong-Ju, Korea was studied. The area is of a mixed land use (11.8% paddy field, 9.9% upland, and 74.9% forest). Since in general ecosystems P is released from land and transported to water, P concentrations in surface soil, surface runoff, and the stream water of the watershed were monitored. The dissolved reactive P (DRP) concentration in surface runoff was closely related to soil test P (Lancaster P(2)O(5)) content (coefficient of determination, R(2) = 0.87). Also, DRP concentration in runoff was highly related to the dissolved P concentration of stream water (R(2) = 0.73). These results, when combined, indicate that soil P and near-stream surface runoff determined the export of P from the soil to the stream. Thus, plans to minimise losses of non-point source P can be more effective when they are implemented at the particular sources. If best P management practices are to be developed, the integration of areas of high soil P with the areas where surface runoff occur must be considered. (C) 2011 IAgrE. Published by Elsevier Ltd. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据