Simulation and analysis of return flow at the field scale in the northern rice irrigation area of China

Wei Liu, Qiang Fu, Jun Meng, Tianxiao Li and Kun Cheng

Agricultural Water Management, 2019, vol. 224, issue C, -

Abstract: To study variations in the field return flow, a field water balance model was established according to the water balance principle, and the field return flow was simulated using system dynamics and tested with field-measured data collected in a trial district in the Hu Lanhe irrigation area in 2016. The main conclusions are as follows: trends of the simulated and measured field water storage and field runoff were consistent. The daily error range between the simulated and measured field water storage values was (−0.1996, 0.2034) mm, and the daily error range between the simulated and measured field runoff values was (−0.2183, 0.1853) mm. Comparison of the trends among the water inflow, the surface return flow, the underground return flow and the total return flow revealed that the greater the water inflow was, the more similar the trends of the surface return flow and total return flow were, with no obvious change in the underground return flow. The total return flow increased with increasing field ridge length and decreased with increasing field ridge height and width. The range of the return flow coefficient of irrigation in 2011˜2016 was (0.5825, 0.6395), and the range of the return flow coefficient of irrigation and precipitation was (0.2734, 0.3386); the impact of irrigation water on the return flow was greater than that of precipitation. The research results are significant to the evaluation and analysis of field return flow and the management of agricultural irrigation water and provide a comparative reference for the study of return water in other areas.

Keywords: System dynamics; Field; Return flow; Water balance; Simulation (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377418303780
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:224:y:2019:i:c:6

DOI: 10.1016/j.agwat.2019.105735

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().