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Dongyang Ren
China Agricultural University
6Publications
4H-index
46Citations
Publications 6
Newest
Published on May 1, 2019in Journal of Hydrology 4.41
Lvyang Xiong (CAU: China Agricultural University), Xu Xu12
Estimated H-index: 12
(CAU: China Agricultural University)
+ 2 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Abstract This article introduces the SWAT-AG (a modified SWAT for agro-hydrological modeling) as an enhanced hydrological model for simulating the hydrological processes in agricultural watershed with shallow water tables. The model is developed based on the framework of the SWAT with significant improvements on describing the interactions of the vadose zone water, groundwater, salt and plant growth. The main features of the SWAT-AG include that it can simulate the close interactions of soil wat...
Published on Mar 1, 2019in Agricultural Water Management 3.54
Dongyang Ren4
Estimated H-index: 4
(CAU: China Agricultural University),
Xu Xu12
Estimated H-index: 12
(CAU: China Agricultural University)
+ 4 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Hydrological effects caused by fragmented land cover types in human-dominated agro-ecosystems are poorly understood. In this study, based on visual interpreted high-resolution land cover map, an agro-hydrological model (HYDRUS-dualKc) was used in a distributed manner to investigate the hydrological complexities caused by fragmented land cover types and shallow groundwater. An irrigation system located in the upper Yellow River basin was chosen as a case study area, where field observations were ...
Published on May 15, 2018in Water 2.52
Dongyang Ren4
Estimated H-index: 4
,
Xu Xu12
Estimated H-index: 12
+ 3 AuthorsGuanhua Huang25
Estimated H-index: 25
Clarifying the role of shallow groundwater systems in eco-hydrological processes is of great significance to agricultural production and ecological sustainability. In this paper, a lumped water balance model was proposed for the GSPAC (groundwater-soil-plant-atmosphere-continuum) system for different land use types under arid, shallow water table conditions. Model application was conducted in an irrigation district (Jiyuan) located in the upper Yellow River basin. A 13-year (2001–2013) water bal...
Published on Feb 1, 2018in Agricultural Water Management 3.54
Dongyang Ren4
Estimated H-index: 4
(CAU: China Agricultural University),
Xu Xu12
Estimated H-index: 12
(CAU: China Agricultural University)
+ 1 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Due to water scarcity, water saving practices (WSPs) are being implemented in the irrigation districts of the upper Yellow River basin, causing a series of consequences, e.g. the reduction of field irrigation amount and groundwater depth (GWD) increase. The impacts of irrigation water reduction and GWD increase in canal systems with heterogeneous land covers is complex and remains unclear, thus the need to be elucidated to efficiently promote WSPs. Based on the two-year field observations in 201...
Published on Sep 1, 2017in Journal of Hydrology 4.41
Dongyang Ren4
Estimated H-index: 4
(CAU: China Agricultural University),
Xu Xu12
Estimated H-index: 12
(CAU: China Agricultural University)
+ 3 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Abstract Relatively low-lying zones of natural vegetation within irrigated areas are not only carriers of biodiversity but also dry drainage areas of excess water and salts applied to nearby croplands. It is thus useful to have a correct understanding of the soil water-salt dynamics and plant water use for keeping the sustainability of those natural areas. The HYDRUS-dualKc model that couples the HYDRUS-1D model with the FAO-56 dualKc approach was extended to simulate the eco-hydrological proces...
Published on Jan 1, 2016in Journal of Hydrology 4.41
Dongyang Ren4
Estimated H-index: 4
(CAU: China Agricultural University),
Xu Xu12
Estimated H-index: 12
(CAU: China Agricultural University)
+ 1 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Summary Water saving in irrigation is a key issue in the upper Yellow River basin. Excessive irrigation leads to water waste, water table rising and increased salinity. Land fragmentation associated with a large dispersion of crops adds to the agro-hydrological complexity of the irrigation system. The model HYDRUS-1D, coupled with the FAO-56 dual crop coefficient approach (dualKc), was applied to simulate the water and salt movement processes. Field experiments were conducted for maize, sunflowe...
Published in Geoderma 4.34
Dongyang Ren4
Estimated H-index: 4
(CAU: China Agricultural University),
Boyu Wei (CAU: China Agricultural University)+ -3 AuthorsGuanhua Huang25
Estimated H-index: 25
(CAU: China Agricultural University)
Abstract Soil salinization is one of the most common land degradation processes that impacts agricultural production, environmental health, and economic welfare. The first task in managing soil salinity is to understand its spatiotemporal characteristics, causal factors and influences, both over large regions and within individual fields. In this study, a typical irrigated agro-ecosystem located in the upper Yellow River basin, suffering from long-term soil salinization problems, was selected as...
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