Modeling Regional Soil Water Balance in Farmland of the Middle Reaches of Heihe River Basin

Jiang, Li; Mao, Xiaoming; Shang, Songhao; Steenhuis, Tammo S.

doi:10.3390/w9110847

Cited by 12 publications

(6 citation statements)

References 53 publications

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“…The items of water balance in the root zone of each maize unit include the water input, output, and changes of soil water storage. The water balance equation can be described by Equation (1) [11]:…”

Section: Soil Water Balance Simulation Modelmentioning

confidence: 99%

“…After proper calibration and validation, these simulation models can be adopted to do scenario analysis for searching preferable management strategies. For example, AquaCrop, SWAP, the soil water balance simulation model, Hydrus, etc., are popular simulation models used to simulate farmland crop growth or water consumption/supply [9][10][11][12]. Such simulation models are good at quantitatively describing the effects of various irrigation water management strategies on the hydrological processes in farmland.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optimization of Irrigation Scheduling for Maize in an Arid Oasis Based on Simulation–Optimization Model

Jiao

Jiang

et al. 2020

Agronomy

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In arid regions, irrigation scheduling optimization is efficient in coping with the shortage of agricultural water resources. This paper developed a simulation–optimization model for irrigation scheduling optimization for the main crop in an arid oasis, aiming to maximize crop yield and minimize crop water consumption. The model integrated the soil water balance simulation model and the optimization model for crop irrigation scheduling. The simulation model was firstly calibrated and validated based on field experiment data for maize in 2012 and 2013, respectively. Then, considering the distribution of soil types and irrigation districts in the study area, the model was used to solve the optimal irrigation schedules for the scenarios of status quo and typical climate years. The results indicated that the model is applicable for reflecting the complexities of simulation–optimization for maize irrigation scheduling. The optimization results showed that the irrigation water-saving potential of the study area was between 97 mm and 240 mm, and the average annual optimal yield of maize was over 7.3 t/ha. The simulation–optimization model of irrigation schedule established in this paper can provide a technical means for the formulation of irrigation schedules to ensure yield optimization and water productivity or water saving.

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Section: Soil Water Balance Simulation Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optimization of Irrigation Scheduling for Maize in an Arid Oasis Based on Simulation–Optimization Model

Jiao

Jiang

et al. 2020

Agronomy

Self Cite

View full text Add to dashboard Cite

show abstract

“…Based on the SWAT model and intelligent optimization, the optimal allocation of agricultural water and soil resources in the middle reaches of the HRB and Zhangye areas was studied [12]. The coupling model of soil water and groundwater was used to study the water cycle process in Zhangye area under historical and future water-saving scenarios [13], and the soil water balance model and numerical model of farmland gas wrapping zone based on empirical assumptions were used to study the soil water balance in Zhangye agricultural irrigation area [14]. The ecohydrological model is used to evaluate the water cycle flux in the middle and lower basins of the HRB [15], and the role of groundwater in the eco-hydrological system of the middle and lower basins [16].…”

Section: Introductionmentioning

confidence: 99%

Coupling Simulation and Prediction of Sustainable Utilization of Water Resources in an Arid Inland River Basin under Climate Change

Qi,

Li,

Zheng

et al. 2023

Water

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The arid endorheic basin of northwest China is characterized by rich land resources, water shortage, and a fragile ecological environment. The establishment of a credible coupling model of groundwater and surface water based on multi-source observation data is an effective means to study the change in basin water cycles and the sustainable utilization of water resources in the past and future. Based on the latest understanding of hydrogeological conditions, hydrology and water resource utilization data in the middle reaches of the Heihe River Basin (HRB), this paper constructs an up-to-date coupling model of surface water and groundwater to study the water balance change of the basin. The water resources data series under historical replay and CMIP5 climate model prediction are constructed to predict future changes in water resources. The study shows that, under the joint influence of natural conditions and human activities, the average annual recharge of groundwater in the study area from 1990 to 2020 is 17.98 × 108 m3/a, the average annual discharge is 18.62 × 108 m3/a, and the difference between recharge and discharge is −0.64 × 108 m3/a. The total groundwater storage is −19.99 × 108 m3, of which the groundwater storage from 1990 to 2001 was −17.52 × 108 m3 and from 2002 to 2020 was −2.47 × 108 m3. Abundant water from 2002 to 2020 in the basin significantly improved the loss of groundwater storage. Under the prediction of historical reappearance and the CMIP5 CNRM-CM5 model RCP4.5 and RCP8.5 pathways, the groundwater level of the Heihe River–Liyuanhe River inclined plain falls first because the HRB has just experienced a wet season and then rises according to future climate change. The groundwater level of the inclined plain east of the Heihe River and Yanchi basin decreases continuously because of the change in water cycle caused by human activities. The erosion accumulation plain is located in the groundwater discharge zone, and the water level is basically stable. Under the conditions of water resource development and utilization, the runoff of Zhengyixia hydrological station cannot meet the requirements of the “97 Water Dividing Plan” of the State Council in most years in the future, and the ecological and production water in the lower reaches of HRB cannot be effectively guaranteed. With the implementation of water-saving irrigation under the RCP4.5 and RCP8.5 scenarios, the runoff of Zhengyixia can meet the “97 Water Diversion Plan”. It is suggested to further improve the level of agricultural water savings in the middle reaches of the HRB and control the reasonable scale of cultivated land in order to reduce water consumption in the middle reaches of the HRB and implement sustainable utilization of water resources in the HRB.

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“…Together with the necessary calibrations and accurate data, these simulation models provide you with access to yield and irrigation programs according to climatic conditions anywhere in the world. The models involving plant water relationships; AquaCrop, SWAP, soil and water balance simulation model, Hydrus are popular simulation models used to simulate the water needs for the growth periods of the plant or the water consumption/supply of farmland (Xu et al, 2019;Ran et al, 2018;Li et al, 2017a;Li et al, 2017b). The AquaCrop model was developed in 2009 by the Food and Agriculture Organization of the United Nations (FAO).…”

Section: Introductionmentioning

confidence: 99%

Determining the yield responses of maize plant under different irrigation scenarios with AquaCrop model

Aşik

Yetik

Candogan

et al. 2021

International Journal of Agriculture Environment and Food Sciences

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The AquaCrop simulation model is a significant implementation used to determine the response of crop yield to water and accordingly build up new strategies to improve agricultural irrigation management. Since determining the appropriate irrigation program in the field researches will require many years and labor; it becomes convenient with the AquaCrop to determine the adaptation of crops to the cultivating conditions and to examine the impact of possible variables such as drought on crop production. In this study, different irrigation scenarios were created, and yield predictions were made with the AquaCrop 6.1 model for maize plant which irrigated by drip irrigation method in Adana conditions, Turkey. These scenarios were created by determining four different depletion levels of readily available water (RAW) amount in the soil. These depletion levels were 25%(S1), 50%(S2), 75%(S3) and 100%(S4). The highest grain yield value was found in S1 as 10.075 ton/ha and the lowest grain yield in the S4 as 9.837 ton/ha. The amount of seasonal irrigation water simulated for different irrigation schedules varied between 348.5-390.7 mm, and the evapotranspiration (ET) varied between 411.5-426.5 mm. As a result, S3 scenario has been recommended considering the amount of irrigation water and the yields achieved.

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Modeling Regional Soil Water Balance in Farmland of the Middle Reaches of Heihe River Basin

Cited by 12 publications

References 53 publications

Optimization of Irrigation Scheduling for Maize in an Arid Oasis Based on Simulation–Optimization Model

Optimization of Irrigation Scheduling for Maize in an Arid Oasis Based on Simulation–Optimization Model

Coupling Simulation and Prediction of Sustainable Utilization of Water Resources in an Arid Inland River Basin under Climate Change

Determining the yield responses of maize plant under different irrigation scenarios with AquaCrop model

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