scholarly journals Issues of assessment of the surface area effect on irrigated water consumption

2021 ◽  
Vol 264 ◽  
pp. 04005
Author(s):  
Adiljan Atajanov ◽  
Ibrahim Khudaev ◽  
Nail Usmanov ◽  
Laziz Babajanov
Keyword(s):  
Water Resources ◽  
Surface Area ◽  
Water Consumption ◽  
Irrigation Water ◽  
Water Saving ◽  
Area Effect ◽  
Irrigation Methods ◽  
The Impact

This article focuses on improving water-saving technologies for efficient use of water resources, the development and recommendation of modern irrigation methods, and assessing the impact of surface area on irrigation water consumption.

scholarly journals The corps’ growth with different water-saving irrigation conditions in new reclamation areas along the coast of Jiangsu

2019 ◽  
Vol 118 ◽  
pp. 03044
Author(s):  
Jun Wang ◽  
Songgan Weng ◽  
Tongshun Wang ◽  
Xing Yang ◽  
Miao Hou ◽  
...  
Keyword(s):  
Water Resources ◽  
Fresh Water ◽  
Quantitative Evaluation ◽  
Irrigation Water ◽  
Drip Irrigation ◽  
Water Saving ◽  
Green Pepper ◽  
Spray Irrigation ◽  
Important Means ◽  
The Impact

This study performed a quantitative evaluation of the impact of the corps’ growth with different water-saving irrigation conditions in new reclamation areas along the coast of Jiangsu. In this work, the yield and the amount of irrigation water of corps’ (watermelon, green pepper, and rice) with different water-saving irrigation modes were investigated. The results indicate that the drip-irrigation and micro-spray irrigation can observably reduce the amount of irrigation-water. With respect to normal irrigation, the rate of water-saving is 39.2%. At the same time, there’s been some improvement in the yield of corps. Water-saving irrigation can been accepted as an important means for alleviating the shortage of fresh water resources in the new reclamation.

scholarly journals Optimal Water Allocation Based on Water Rights Transaction Models with Administered and Market-Based Systems: A Case Study of Shiyang River Basin, China

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 577 ◽  
Author(s):  
Lizhen Wang ◽  
Yong Zhao ◽  
Yuefei Huang ◽  
Jianhua Wang ◽  
Haihong Li ◽  
...  
Keyword(s):  
Water Resources ◽  
River Basin ◽  
Water Allocation ◽  
Water Rights ◽  
Water Saving ◽  
Allocation Model ◽  
Transaction Model ◽  
Shiyang River Basin ◽  
The Impact ◽  
Optimal Water Allocation

Water-rights trade has proved to be an effective method for coping with water shortages through the transfer of water resources between users. The water allocation system is classified into two categories based on information transparency and water rights transaction goals: administered system (AS) and market-based system (MS). A multi-agent and multi-objective optimal allocation model, built on a complex adaptive system, was introduced to direct the distribution of water resources under an AS in the Shiyang River Basin; it was compared with a market-based water rights transaction model using the bulletin-board approach. Ideal economic agent equations played a dominant role in both models. The government and different water users were conceptualized as agents with different behaviors and goals in water allocation. The impact of water-saving cost on optimal water allocation was also considered. The results showed that an agent’s water-saving behavior was incentivized by high transaction prices in the water market. Under the MS, the highest bid in the quotation set had a dominant influence on how trade was conducted. A higher transaction price will, thus, result in a better benefit ratio, and a lower one will result in inactivity in terms of water rights trade. This will significantly impact the economic benefit to the basin.

scholarly journals Study on Double-Level Allocation of Irrigation Water Rights

2021 ◽  
Author(s):  
Xinjian Guan ◽  
Qiongying Du ◽  
Wenge Zhang ◽  
Baoyong Wang
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
Optimal Allocation ◽  
Water Rights ◽  
Scientific Basis ◽  
Water Saving ◽  
Irrigation District ◽  
Allocation Model ◽  
Irrigation Area ◽  
Irrigation Districts

Abstract Establishing and perfecting the water rights system is an important way to alleviate the shortage of water resources and realize the optimal allocation of water resources. Agriculture is an important user of water in various water-consumption industries, the confirmation of water rights in irrigation districts to farmers is the inevitable requirement for implementing fine irrigation in agricultural production. In this paper, a double-level water rights allocation model of national canals – farmer households in irrigation district is established. It takes into account the current water consumption of the canal system, the future water-saving potential and the constraint of total amount control at the canal level. It takes into account the asymmetric information of farmer households’ population and irrigation area at the farmer household level. Furthermore, the Gini coefficient method is used to construct the water rights allocation model among farmer households based on the principle of fairness. Finally, Wulanbuhe Irrigation Area in the Hetao Irrigation Area of Inner Mongolia is taken as an example. The results show that the allocated water rights of the national canals in the irrigation district are less than the current because of water-saving measures and water rights of farmer household get compensation or cut respectively. The research has fully tapped the water-saving potential of irrigation districts, refined the distribution of water rights of farmers and can provide a scientific basis for the development of water rights allocation in irrigation districts and water rights transactions between farmers.

The Regulation and Management of Water Resources in Groundwater Over-extraction Area based on ET

2021 ◽  
Author(s):  
fawen li ◽  
Wenhui Yan ◽  
Yong Zhao ◽  
Rengui Jiang
Keyword(s):  
Water Resources ◽  
Water Resources Management ◽  
Water Consumption ◽  
Water Saving ◽  
Green Water ◽  
Blue Water ◽  
Crop Water ◽  
Total Rainfall ◽  
Resources Management ◽  
Crop Water Consumption

Abstract Because of the shortage of water resources, the phenomenon of groundwater over-extraction is widespread in many parts of the world, which has become a hot issue to be solved. The traditional idea of water resources management only considering blue water (stream flow) can't meet the demand of sustainable utilization of water resources. Blue water accounts for less than 40% of total rainfall, while green water (evapotranspiration) accounts for more than 60% of total rainfall. In the natural environment, vegetation growth mainly depends on green water, which is often neglected. Obviously, the traditional water resources management without considering green water has obvious deficiencies, which can't really reflect the regional water consumption situation in the water resources management. And only by limiting water consumption can achieve the real water saving. In addition, the mode of water resources development and utilization has changed from "supply according to demand" to "demand according to supply". In this background, for many regions with limited water resources, it is impossible to rely on excessive water intake for development, and sustainable development of regional can only be realized by truly controlling water demand. This paper chooses Shijin Irrigation District in the North China Plain as the research area, where agricultural water consumption is high and groundwater over-extraction is serious, and ecological environment is bad. In order to alleviate this situation, comprehensive regulation of water resources based ET is necessary. Therefore, this paper focuses on the concept of ET water resources management and includes green water into water resources assessment. Based on the principle of water balance, the target ET value of crops in the study area is calculated, and the ET value is taken as the target of water resources regulation. The actual water consumption is calculated by Penman-Monteith formula, and reduction of crop water consumption is obtained according to the difference between actual ET and target ET. The reduction in crop water consumption leads to a reduction in demand for water supply, which reduces groundwater extraction. The results of this study can provide necessary technical support for solving the problem of groundwater over-extraction and realizing real water saving.

scholarly journals The technique of construct water-saving agriculture

2018 ◽  
Vol 246 ◽  
pp. 02016
Author(s):  
Ji Ren
Keyword(s):  
Water Resources ◽  
Social Development ◽  
Water Use ◽  
Water Resource ◽  
Water Saving ◽  
Canal Water ◽  
Irrigation Methods ◽  
Water Problem ◽  
Water Waste

A shortage of water resource in China, the water problem has become the bottleneck of China’s economic and social development. Agriculture consumes very large amounts of water resources and water waste is quite serious in our country, therefore, the construction of water-saving agriculture is urgent to solve the problem of water resource in our country. Implementation technology in the construction of water-saving agriculture was proposed in this paper, namely improve the canal water use coefficient, water saving irrigation methods and suitable irrigation mode.

scholarly journals Water Consumption in the Belarusian Woodland

2018 ◽  
Author(s):  
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
Water Saving ◽  
Water Recycling ◽  
Water Losses ◽  
Recycling Systems

The paper presents the results of researches of the Belarusian Woodland water consumption over the period from 2000 to 2015. We have made a conclusion about relatively low effectiveness of the water resources use and have shown the necessity of rational water consumption due to introduction of water-saving techniques, water recycling systems, as well as minimization of water losses during transportation.

scholarly journals Projection of irrigation water demand based on the simulation of synthetic crop coefficients and climate change

2021 ◽  
Vol 25 (2) ◽  
pp. 637-651
Author(s):  
Michel Le Page ◽  
Younes Fakir ◽  
Lionel Jarlan ◽  
Aaron Boone ◽  
Brahim Berjamy ◽  
...  
Keyword(s):  
Climate Change ◽  
Water Resources ◽  
Irrigation Water ◽  
Mediterranean Area ◽  
Training Dataset ◽  
Climate Change Scenarios ◽  
Water Requirements ◽  
Future Evolution ◽  
Crop Coefficients ◽  
The Impact

Abstract. In the context of major changes (climate, demography, economy, etc.), the southern Mediterranean area faces serious challenges with intrinsically low, irregular, and continuously decreasing water resources. In some regions, the proper growth both in terms of cropping density and surface area of irrigated areas is so significant that it needs to be included in future scenarios. A method for estimating the future evolution of irrigation water requirements is proposed and tested in the Tensift watershed, Morocco. Monthly synthetic crop coefficients (Kc) of the different irrigated areas were obtained from a time series of remote sensing observations. An empirical model using the synthetic Kc and rainfall was developed and fitted to the actual data for each of the different irrigated areas within the study area. The model consists of a system of equations that takes into account the monthly trend of Kc, the impact of yearly rainfall, and the saturation of Kc due to the presence of tree crops. The impact of precipitation change is included in the Kc estimate and the water budget. The anthropogenic impact is included in the equations for Kc. The impact of temperature change is only included in the reference evapotranspiration, with no impact on the Kc cycle. The model appears to be reliable with an average r2 of 0.69 for the observation period (2000–2016). However, different subsampling tests of the number of calibration years showed that the performance is degraded when the size of the training dataset is reduced. When subsampling the training dataset to one-third of the 16 available years, r2 was reduced to 0.45. This score has been interpreted as the level of reliability that could be expected for two time periods after the full training years (thus near to 2050). The model has been used to reinterpret a local water management plan and to incorporate two downscaled climate change scenarios (RCP4.5 and RCP8.5). The examination of irrigation water requirements until 2050 revealed that the difference between the two climate scenarios was very small (< 2 %), while the two agricultural scenarios were strongly contrasted both spatially and in terms of their impact on water resources. The approach is generic and can be refined by incorporating irrigation efficiencies.

Irrigation water saving through adoption of direct rice sowing technology in the Indo-Gangetic Plains: empirical evidence from Pakistan

2016 ◽  
Vol 11 (3) ◽  
pp. 610-620 ◽  
Author(s):  
Akhter Ali ◽  
Dil Bahadur Rahat ◽  
Olaf Erenstein
Keyword(s):  
Irrigation Water ◽  
Positive Impact ◽  
Water Productivity ◽  
Water Saving ◽  
Farm Size ◽  
Size Analysis ◽  
Wheat Crop ◽  
Data Set ◽  
Gangetic Plains ◽  
The Impact

The main purpose of this article is to estimate the impact of the direct rice sowing (DRS) technology on irrigation water saving in the Indo-Gangetic plains. For this study, a comprehensive data set was collected from the rice-wheat area of the Pakistani Punjab. In total, 238 farmers were interviewed from the three major rice-producing districts i.e. Gujranwala, Sheikhupura and Hafizabad. The empirical analysis was carried out by employing the propensity score matching approach to correct for potential sample selection bias that may arise due to systematic differences between the participants and non-participants. The empirical results indicate that the DRS technology is a water saving technology and, on average, the adopters need four less irrigation as compared to the traditional transplanting method. The DRS technology is also labour saving and requires less labour than the conventional rice sowing technology. The water productivity of the DRS technology is also higher as compared to the conventional transplanting method. The DRS technology also has a beneficial yield impact on the subsequent wheat crop. However, the major problem with the DRS technology is weed infestation which needs to be addressed. Farm size analysis indicates that DRS technology has a positive impact for all farmers and particularly on the small and medium scale farmers.

Airline Effective Water Consumption Strategies

2020 ◽  
pp. 110-130
Keyword(s):  
Water Consumption ◽  
Water Saving ◽  
Published Data ◽  
Recovery Pattern ◽  
Sustainability Reports ◽  
The Impact ◽  
Consumption Strategies ◽  
Effective Water ◽  
Two Hybrid ◽  
Action Category

This chapter reports the effective water consumption strategies. To achieve this aim, the water saving practices of 14 airlines from four regions were investigated. The data used in this chapter was a secondary published data in the annual sustainability reports. The data was retrieved from GRI (Global Reporting Initiatives) website. The special tailored data analysis techniques were used for this purpose. This chapter reported five effective strategic patterns. The strategic patterns were two facilities and buildings water saving, one facilities and buildings water recycling and recovery pattern, and two hybrid strategic patterns. This chapter helps the decision makers and the academics alike, since the impact of each action on reducing the water consumption under each action category of each pattern was reported.

Water Consumption Characteristics and Water Use Efficiency of Flue-Cured Tobacco under Different Conditions of Irrigation

2014 ◽  
Vol 651-653 ◽  
pp. 1388-1393
Author(s):  
Xiao Hou Shao ◽  
Qian Wang ◽  
You Bo Yuan ◽  
Fu Zhang Ding
Keyword(s):  
Nonlinear Equation ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Consumption ◽  
Irrigation Water ◽  
Measured Data ◽  
Water Saving ◽  
High Yield ◽  
Use Efficiency ◽  
High Production

The experiments were carried out in lysimeters to study water consumption characteristics and water use efficiency of flue-cured tobacco under different conditions of irrigation. By comparing the T and the invalid E of the tobacco K326, it is concluded that in the period of root extending most of the irrigation water is used for the E, in the early vigorous period, plants with all of the treatments show a T higher than the E, in the late vigorous period and the maturity, this ratio remains at 50%. Based on measured data, it was shown that the amount of irrigation water in the vigorous period had the most important influence on the yield of the tobacco.The nonlinear equation of the yield and WUE is Y=-2531.3X2+6113.8X-624.49,R2=0.7324; the equation of the yield and ET is Y=4E-0.7X3-0.0032X2+8.8458X-4806.7, suggesting that the WUE is not maximized at the highest yield of flue-cured tobacco. In the high-yield range, reducing irrigation appropriately could reach the harmonization of high production and water saving.

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