Changes in Stream Peak Flow and Regulation in Naoli River Watershed as a Result of Wetland Loss
Joint Authors
Yao, Yunlong
Wang, Lei
Lv, Xianguo
Yu, Hongxian
Li, Guofu
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-07
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
Hydrology helps determine the character of wetlands; wetlands, in turn, regulate water flow, which influences regional hydrology.
To understand these dynamics, we studied the Naoli basin where, from 1954 to 2005, intensive marshland cultivation took place, and the watershed’s wetland area declined from 94.4 × 10 4 ha to 17.8 × 10 4 ha.
More than 80% of the wetland area loss was due to conversion to farmland, especially from 1976 to 1986.
The processes of transforming wetlands to cultivated land in the whole Naoli basin and subbasins can be described using a first order exponential decay model.
To quantify the effects of wetlands cultivation, we analyzed daily rainfall and streamflow data measured from 1955 to 2005 at two stations (Baoqing Station and Caizuizi Station).
We defined a streamflow regulation index (SRI) and applied a Mann-Kendall-Sneyers test to further analyze the data.
As the wetland area decreased, the peak streamflow at the Caizuizi station increased, and less precipitation generated heavier peak flows, as the runoff was faster than before.
The SRI from 1959 to 2005 showed an increasing trend; the SRI rate of increase was 0.05/10a, demonstrating that the watershed’s regulation of streamflow regulation was declined as the wetlands disappeared.
American Psychological Association (APA)
Yao, Yunlong& Wang, Lei& Lv, Xianguo& Yu, Hongxian& Li, Guofu. 2014. Changes in Stream Peak Flow and Regulation in Naoli River Watershed as a Result of Wetland Loss. The Scientific World Journal،Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1048741
Modern Language Association (MLA)
Yao, Yunlong…[et al.]. Changes in Stream Peak Flow and Regulation in Naoli River Watershed as a Result of Wetland Loss. The Scientific World Journal No. 2014 (2014), pp.1-10.
https://search.emarefa.net/detail/BIM-1048741
American Medical Association (AMA)
Yao, Yunlong& Wang, Lei& Lv, Xianguo& Yu, Hongxian& Li, Guofu. Changes in Stream Peak Flow and Regulation in Naoli River Watershed as a Result of Wetland Loss. The Scientific World Journal. 2014. Vol. 2014, no. 2014, pp.1-10.
https://search.emarefa.net/detail/BIM-1048741
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1048741