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Title: WALRUS-paddy model for simulating the hydrological processes of lowland polders with paddy fields and pumping stations
Author: R. H. Yan, J. F. Gao and J. C. Huang
Corresponding Author: Gao, J. F.
Source: Agricultural Water Management
Issued Date: 2016
DOI: 10.1016/j.agwat.2016.02.018
Volume: 169, Pages:148-161
Abstract: Simulating the rain-runoff process in lowland polder will lead to improvements to hydrological modeling of entire floodplain catchments. The lumped Wageningen Lowland Runoff Simulator (WALRUS) provides an efficient and reliable model for simulating the hydrological processes in lowland catchment with shallow groundwater. However, this model needs to be improved before being applied to Chinese polders, which have multiple land use types and pumping stations. This study proposes an improved version called WALRUS-paddy that accounts for the discharge from multi-sources, including drylands, paddy fields, residential areas, and water areas. A water management scheme is incorporated to control the irrigation and drainage operation in paddy rice fields and the groundwater flow between the paddy field and the adjacent dryland is considered. In addition, a new stage-discharge relation function is introduced to represent the discharge process of the polder with pumping stations and culverts. Then, the model is validated in the Jianwei polder of east China. The modeled results agree well with the observed discharge and show that the improved model can provide good estimates of the discharge in this polder district. Thus, the improved model is feasible and helpful for water resources management of Chinese polders. (C) 2016 Elsevier B.V. All rights reserved.
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Content Type: 期刊论文
URI: http://ir.iga.ac.cn/handle/131322/7110
Appears in Collections:湿地生态系统管理学科组_期刊论文

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