Hydrological complexities in irrigated agro-ecosystems with fragmented land cover types and shallow groundwater: Insights from a distributed hydrological modeling method

Ren, Dongyang; Xu, Xu; Engel, Bernard A.; Huang, Quanzhong; Xiong, Yunwu; Huo, Zailin

doi:10.1016/j.agwat.2018.12.011

Cited by 25 publications

(19 citation statements)

References 45 publications

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“…With a lack of timely precipitation under arid or semi-arid conditions, straw incorporation practices can improve soil water status and play an important role in crop growth [36]. However, the anaerobic decomposition of crop straw incorporated to the soil will release some toxic aliphatic aromatic acids and organic acids [40] and restrain crop growth in flooded soil [41]. Our study showed that the ALP treatment compared with the CK treatment improved biomass yields at the jointing-grain filling stage in 2011 and 2012 summer maize seasons.…”

Section: Biomass Yield and Water Use Efficiencymentioning

confidence: 99%

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Zou

Feng

et al. 2020

Agronomy

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Water shortage and excessive chemical fertilizers application result in low soil water and nutrient availability and limit crop production in the Loess Plateau of Northwest China. Ammoniated straw incorporation with N fertilization may be an efficient strategy to maintain agricultural sustainability. However, the interactive effects of straw incorporation and N fertilizer on the biomass water use efficiency (WUE) in the winter wheat–summer maize rotation system remain unclear. A 3-year field experiment was conducted to evaluate the effects of combining ammoniated straw incorporation and N fertilizer on soil water, biomass yield and biomass water use efficiency (WUE) in an annual summer maize (Zea mays L.)—Winter wheat (Triticum aestivum L.) rotation system. There were three treatments: (i) long straw (5 cm) mulching with N fertilizer (CK), (ii) long straw with N fertilizer plowed into the soil (LP), and (iii) ammoniated long straw with N fertilizer plowed into the soil (ALP). Compared with the CK treatment, LP and ALP led to a similar soil water storage capacity. ALP improved summer maize biomass yield and winter wheat biomass yield at the jointing-maturity stage. ALP improved summer maize WUE at the ten-leaf collar-tasseling stage and winter wheat WUE from the tillering stage to the maturity stage. Also, the ALP treatment increased the total water use efficiency (TWUE) of winter wheat by 4.1–22.0%. Overall, ammoniated straw incorporation produced the most favorable biomass yield and WUE in the summer maize—Winter wheat rotation system in the Loess Plateau of China.

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Section: Biomass Yield and Water Use Efficiencymentioning

confidence: 99%

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Zou

Feng

et al. 2020

Agronomy

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“…Compared with the ET estimation results of HTEM-ABL (Atmospheric Boundary Layer) (0.63 mm/day for RMSE and 13.0% for MRE) [6] and SEBAL (0.53 mm/day for RMSE and 14.6% for MRE) [37] fed with Moderate Resolution Imaging Spectroradiometer (MODIS) data at 250 m resolution in the same study area, the model performance in this study at 30 m resolution is slightly better. Therefore, in HID, where the crop planting pattern is complex [19], the finer spatial resolution of satellite images may be favorable to improve the estimation accuracy of ET. However, the model precision was only assessed with limited field experiment data.…”

Section: Validation Of Htemmentioning

confidence: 99%

“…However, it is generally difficult to predict the idealized K c over large regions [8]. The third group is physically based simulation models that estimate crop ET from simulation models for water flow in the soil-plant-atmosphere continuum (SPAC) and/or crop growth [18][19][20][21]. However, these models require a large number of in situ measured data as parameters and inputs [22].…”

Section: Introductionmentioning

confidence: 99%

“…The fragmented and inter-annual varied crop planting pattern is very common in China and many other parts of the world [19,31,32], which restricts the availability of timely crop planting map. Hetao Irrigation District (HID) in Inner Mongolia is a typical example of such case, which has a fragmented crop planting pattern due to the special "farmland use rights" [18,33].…”

Section: Introductionmentioning

confidence: 99%

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Estimating Growing Season Evapotranspiration and Transpiration of Major Crops over a Large Irrigation District from HJ-1A/1B Data Using a Remote Sensing-Based Dual Source Evapotranspiration Model

Shang

2020

Remote Sensing

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Crop evapotranspiration (ET) is the largest water consumer of agriculture water in an irrigation district. Remote sensing (RS) technique has provided an effective way to map regional ET using various RS-based ET models over the past several decades. To map growing season ET of different crops and partition ET into evaporation (E) and transpiration (T) at regional scale, appropriate ET models should be further integrated with crop distribution maps in different years and crop growing seasons determined for each crop pixel. In this study, a hybrid dual-source scheme and trapezoid framework-based ET Model (HTEM) fed with HJ-1A/1B data was applied in Hetao Irrigation District (HID) of China from 2009 to 2015 to map crop growing season ET and T at 30 m resolution. The HTEM model with HJ-1A/1B data performed well in estimating ET in HID, and the finer spatial resolution of model input data can improve the estimation accuracy of ET. Combined with the annual crop planting map identified in previous study, and crop growing seasons determined from fitted Normalized Difference Vegetation Index (NDVI) curves for crop pixels, the spatial and temporal variations of growing season ET and T of major crops (maize and sunflower) were examined. The results indicate that ET and T of maize and sunflower reach their minimum values in the southwest HID with smaller crop planting density, and reach their maximum values in northwest HID with higher crop planting density. Over the study period with a decreasing trend of available irrigation water, ET and T in maize and sunflower growing seasons show decreasing trends, while ratios of T/ET show increasing trends, which implies that the adverse effect of decreased irrigation water diversion on crop growth is diminished due to the favorable portioning of E and T in cropland of HID. In addition, the calculation results of crop coefficients show that there is water stress to crop growth in the study area. The present results are helpful to better understand the spatial pattern of crop water consumption and water stress of different crops during crop growing season, and provide the basis for optimizing the spatial distribution of crop planting with less water consumption and more crop yield.

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“…In the Yellow River basin various water-accounting models have been developed to simulate the soil water content and water fluxes (Xu et al, 2012;Chen et al, 2014;Xue and Ren, 2017;Ren et al, 2019). Numerical implementations are the finite-element model HYDRUS-1D by Ren et al (2016) and Luo and Sophocleous (2010) and a finite-difference model by Moiwo et al (2010).…”

Section: Introductionmentioning

confidence: 99%

A unique vadose zone model for shallow aquifers: the Hetao irrigation district, China

Liu

Wang

Huo

et al. 2019

Hydrol. Earth Syst. Sci.

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Abstract. Rapid population growth is increasing pressure on the world water resources. Agriculture will require crops to be grown with less water. This is especially the case for the closed Yellow River basin, necessitating a better understanding of the fate of irrigation water in the soil. In this paper, we report on a field experiment and develop a physically based model for the shallow groundwater in the Hetao irrigation district in Inner Mongolia, in the arid middle reaches of the Yellow River. Unlike other approaches, this model recognizes that field capacity is reached when the matric potential is equal to the height above the groundwater table and not by a limiting soil conductivity. The field experiment was carried out in 2016 and 2017. Daily moisture contents at five depths in the top 90 cm and groundwater table depths were measured in two fields with a corn crop. The data collected were used for model calibration and validation. The calibration and validation results show that the model-simulated soil moisture and groundwater depth fitted well. The model can be used in areas with shallow groundwater to optimize irrigation water use and minimize tailwater losses.

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Hydrological complexities in irrigated agro-ecosystems with fragmented land cover types and shallow groundwater: Insights from a distributed hydrological modeling method

Cited by 25 publications

References 45 publications

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

An Ammoniated Straw Incorporation Increased Biomass Production and Water Use Efficiency in an Annual Wheat-Maize Rotation System in Semi-Arid China

Estimating Growing Season Evapotranspiration and Transpiration of Major Crops over a Large Irrigation District from HJ-1A/1B Data Using a Remote Sensing-Based Dual Source Evapotranspiration Model

A unique vadose zone model for shallow aquifers: the Hetao irrigation district, China

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