scholarly journals Simulation of Water and Salt Dynamics under Different Water-Saving Degrees Using the SAHYSMOD Model

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1939
Author(s):  
Xiaomin Chang ◽  
Shaoli Wang ◽  
Zhanyi Gao ◽  
Haorui Chen ◽  
Xiaoyan Guan
Keyword(s):  
Agricultural Development ◽  
Reduction Rate ◽  
Water Shortage ◽  
Northwest China ◽  
Soil Salinization ◽  
Water Saving ◽  
Irrigation District ◽  
Water Diversion ◽  
The Sustainable Development ◽  
Management Scheme

Water shortage and soil salinization are the main issues threatening the sustainable development of agriculture and ecology in the Hetao Irrigation District (HID). The application of water-saving practices is required for sustainable agricultural development. However, further study is required to assess the effects of these practices on water and salt dynamics in the long term. In this study, the impacts of different water-saving practices on water and salt dynamics were investigated in the HID, Northwest China. The SAHYSMOD (integrated spatial agro-hydro-salinity model) was used to analyze the water and salt dynamics for different water-saving irrigation scenarios. The results indicate that the SAHYSMOD model shows a good performance after successful calibration (2007–2012) and validation (2013–2016). The soil salinity of cultivated land in the middle and upper reaches of the irrigation district decreased slightly, while that in the lower reaches increased significantly over the next 10 years under current irrigation and drainage conditions. It is predicted that if the amount of water diverted is reduced by up to 15%, the maximum water-saving volume could reach 650 million m3 yr–1. For the fixed reduction rate of total water diversion, the prioritized measure should be given to reduce the amount of field irrigation quota, and then to improve the water efficiency of the canal system. Although a certain amount of water can be saved through various measures, the effect of water saving in the irrigation district should be analyzed comprehensively, and the optimal water management scheme should be determined by considering the ecological water requirement in the HID.

Study on Water Measuring Facilities in Water-Saving Irrigation District, China

2014 ◽  
Vol 1010-1012 ◽  
pp. 1033-1036
Author(s):  
Xiao Yu ◽  
Xun Jian Long ◽  
Yan He ◽  
Ying Liu
Keyword(s):  
Agricultural Development ◽  
Industrial Structure ◽  
Rapid Development ◽  
Water Shortage ◽  
Water Saving ◽  
Irrigation District ◽  
Chinese Government ◽  
Development Direction ◽  
District Management ◽  
Agriculture Development

In recent years, the Chinese government has adjust the implementation of national industrial structure and popularize water saving. However, agricultural water consumption still accounted for more than 60% of the total water content. With the rapid development of economy, the situation of water shortage is becoming increasingly serious. In agriculture production, developing accurate quantity water infrastructure projects can promote water saving on agricultural production and advance the process of water-saving agriculture. Based on the analysis of the current situation of agricultural development in China, this manuscript compared the development of the irrigation district management system since 1950s, and summarized the main factors restricting the construction of water-saving irrigation area. The results show that (1) Irrigation facilities coverage remains to be improved. (2) Low accuracy of measuring water facilities. (3) Lack of economic and practical equipment. In addition, this paper also put forward the research and development direction of quantity of water facilities in future. It can provide useful reference for water-saving agriculture development in China.

Water Resources Optimal Allocation in Middle Line of South to North Water Diversion Project of Hebei, China Using AHP-LP

2014 ◽  
Vol 937 ◽  
pp. 559-564
Author(s):  
Tai Zhong Gao ◽  
Can Can Zhang ◽  
Hui Cong Pang
Keyword(s):  
Water Resources ◽  
Optimal Allocation ◽  
Supply And Demand ◽  
Water Shortage ◽  
Hebei Province ◽  
Water Diversion ◽  
Middle Line ◽  
The Sustainable Development ◽  
North Water ◽  
Water Resources Optimal Allocation

Water resource is irreplaceable as one kind of important natural resources and strategic economic resources. Water resources optimal allocation is an important means to solve the problem of water resources to keep the relative balance of the supply and demand. For ensuring the sustainable development, according to the South-to-North Water Transfer Project, and aiming at the maximum synthesized benefits, the model for water resources optimal allocation was established. A lot of factors were considered. The cause function, restriction and parameters were discussed. At last, optimal allocation of water resources in the middle line of Project in Hebei Province was studied under the guarantee of 95 % in 2010 and 2014. The results showed that the Project can solve the serious water shortage in Hebei province, North China.

scholarly journals The annual total artesian water diversion plan of 300billion Square meters in the arid desert area of northwest China

2020 ◽  
Vol 4 (2) ◽  
pp. 62-65
Author(s):  
Zhenqiang Huang
Keyword(s):  
National Economy ◽  
Central Government ◽  
Water Shortage ◽  
Northwest China ◽  
Water Diversion ◽  
Desert Area ◽  
Construction Period ◽  
Annual Total ◽  
Artesian Water ◽  
Arid Desert

The water shortage in the arid desert area of northwest China has seriously restricted the healthy, balanced and sustainable development of the national economy. In the arid desert area of northwest China, the total budget of the full artesian water diversion project of 300billion square meters per year is less than 3trillion yuan, and the construction period is less than 10years. Hope the central government, Ministry of Water Resources, ministry of agriculture, ministry of water and power. And other major national economy and people's livelihood related departments and many experts and scholars, people with lofty ideals to pay high attention in a timely manner.

Impacts of water saving on groundwater balance in a large-scale arid irrigation district, Northwest China

2016 ◽  
Vol 34 (4) ◽  
pp. 297-312 ◽  
Author(s):  
Weifeng Yue ◽  
Xianze Liu ◽  
Tiejun Wang ◽  
Xunhong Chen
Keyword(s):  
Large Scale ◽  
Northwest China ◽  
Water Saving ◽  
Irrigation District ◽  
Groundwater Balance

scholarly journals Effects of mulching on soil CO2 fluxes, hay yield and nutritional yield in a forage maize field in Northwest China

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ming Fan ◽  
Qiang Li ◽  
Enhe Zhang ◽  
Qinglin Liu ◽  
Qi Wang
Keyword(s):  
Soil Moisture ◽  
Field Experiment ◽  
Water Shortage ◽  
Northwest China ◽  
Plastic Film ◽  
Agricultural Ecosystem ◽  
Forage Maize ◽  
The Sustainable Development ◽  
Heavy Carbon ◽  
Film Mulching

Abstract In arid areas of China, water shortage and heavy carbon emissions have been threatening agricultural sustainability and which has become a vital issue. A field experiment was conducted to explore how different mulching affects soil moisture and temperature, CO2 fluxes, forage-maize hay yield and nutritional value during 2 consecutive years: 2014 and 2015. The field experiment showed that mulching materials had distinct effects on soil moisture and temperature and CO2 fluxes. The soil temperature and CO2 fluxes were in order of common plastic film mulching (PFM) > bio-degradable mulch mulching (BMM) > no mulching (CK) > straw mulching (SM), while the soil moisture was in order of PFM > BMM > SM > CK over these two years. Compared with CK, hay yield respectively increased by 23.25%, 22.51% and 5.27% for PFM, BMM and SM, WUE increased by 35.60%, 32.34% and 10.88%, and the total nutrient yields increased by 17.75%, 21.35% and 6.95%, respectively. To sum up, in combination with ecology and environmental protection, bio-degradable mulch could replace common plastic film and bio-degradable mulch should be popular in future. As bio-degradable mulch is green non-pollution, it is conducive to the sustainable development of agricultural ecosystem.

Exploring Northwest China's agricultural water-saving strategy: analysis of water use efficiency based on an SE-DEA model conducted in Xi'an, Shaanxi Province

2016 ◽  
Vol 74 (5) ◽  
pp. 1106-1115 ◽  
Author(s):  
L. Mu ◽  
L. Fang ◽  
H. Wang ◽  
L. Chen ◽  
Y. Yang ◽  
...  
Keyword(s):  
Water Resources ◽  
Water Use Efficiency ◽  
Water Use ◽  
Water Demand ◽  
Water Governance ◽  
Northwest China ◽  
Water Saving ◽  
Shaanxi Province ◽  
Agricultural Water ◽  
Use Efficiency

Worldwide, water scarcity threatens delivery of water to urban centers. Increasing water use efficiency (WUE) is often recommended to reduce water demand, especially in water-scarce areas. In this paper, agricultural water use efficiency (AWUE) is examined using the super-efficient data envelopment analysis (DEA) approach in Xi'an in Northwest China at a temporal and spatial level. The grey systems analysis technique was then adopted to identify the factors that influenced the efficiency differentials under the shortage of water resources. From the perspective of temporal scales, the AWUE increased year by year during 2004–2012, and the highest (2.05) was obtained in 2009. Additionally, the AWUE was the best in the urban area at the spatial scale. Moreover, the key influencing factors of the AWUE are the financial situations and agricultural water-saving technology. Finally, we identified several knowledge gaps and proposed water-saving strategies for increasing AWUE and reducing its water demand by: (1) improving irrigation practices (timing and amounts) based on compatible water-saving techniques; (2) maximizing regional WUE by managing water resources and allocation at regional scales as well as enhancing coordination among Chinese water governance institutes.

The Discussion on the Construction of City Waterfront Landscape Based on the Visual Angle of Ecology Restoration

2011 ◽  
Vol 243-249 ◽  
pp. 6827-6833 ◽  
Author(s):  
Gui Yuan Li ◽  
Zhong Yuan Duan ◽  
Yang Xu
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Visual Angle ◽  
Global Climate ◽  
Optimization Method ◽  
Water Shortage ◽  
Practical Significance ◽  
Living Standard ◽  
Design Technique ◽  
The Sustainable Development

In recent years, with the increase of population, the development of urbanization, and the improvement of people’s living standard, people have got an increasingly strong consciousness of environment landscape. While, the global climate change, water shortage and pollution problems which are resulted in the development of social economy.In this article, according to the different traits of waterfront landscape environment, we will analyze the problems of waterfront landscape environment construction, and discuss the design technique of waterfront landscape and the optimization method of landscape environment based on the visual angle of ecology restoration. This can prompt the development of waterfront landscape environment towards the harmony and intergrowth of nature ,ecology and human culture, and this has practical significance for the sustainable development of human and water.

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