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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.
Xiaomin Chang; Shaoli Wang; Zhanyi Gao; Haorui Chen; Xiaoyan Guan. Simulation of Water and Salt Dynamics under Different Water-Saving Degrees Using the SAHYSMOD Model. Water 2021, 13, 1939 .
AMA StyleXiaomin Chang, Shaoli Wang, Zhanyi Gao, Haorui Chen, Xiaoyan Guan. Simulation of Water and Salt Dynamics under Different Water-Saving Degrees Using the SAHYSMOD Model. Water. 2021; 13 (14):1939.
Chicago/Turabian StyleXiaomin Chang; Shaoli Wang; Zhanyi Gao; Haorui Chen; Xiaoyan Guan. 2021. "Simulation of Water and Salt Dynamics under Different Water-Saving Degrees Using the SAHYSMOD Model." Water 13, no. 14: 1939.
Inefficient and non-environmentally friendly absorbent production can lead to much resource waste and go against low carbon and sustainable development. A novel and efficient Mg-Fe-Ce (MFC) complex metal oxide absorbent of fluoride ion (F−) removal was proposed for safe, environmentally friendly, and sustainable drinking water management. A series of optimization and preparation processes for the adsorbent and batch experiments (e.g., effects of solution pH, adsorption kinetics, adsorption isotherms, effects of coexisting anions, as well as surface properties tests) were carried out to analyze the characteristics of the adsorbent. The results indicated that optimum removal of F− occurred in a pH range of 4–5.5, and higher adsorption performances also happened under neutral pH conditions. The kinetic data under 10 and 50 mg·g−1 were found to be suitable for the pseudo-second-order adsorption rate model, and the two-site Langmuir model was ideal for adsorption isotherm data as compared to the one-site Langmuir model. According to the two-site Langmuir model, the maximum adsorption capacity calculated at pH 7.0 ± 0.2 was 204 mg·g−1. The adsorption of F− was not affected by the presence of sulfate (SO42−), nitrate (NO3−), and chloride (Cl−), which was suitable for practical applications in drinking water with high F− concentration. The MFC adsorbent has an amorphous structure, and there was an exchange reaction between OH− and F−. The novel MFC adsorbent was proven to have higher efficiency, better economy, and environmental sustainability, and be more environmentally friendly.
Changjuan Dong; Xiaomei Wu; Zhanyi Gao; Peiling Yang; Mohd Khan. A Novel and Efficient Metal Oxide Fluoride Absorbent for Drinking Water Safety and Sustainable Development. Sustainability 2021, 13, 883 .
AMA StyleChangjuan Dong, Xiaomei Wu, Zhanyi Gao, Peiling Yang, Mohd Khan. A Novel and Efficient Metal Oxide Fluoride Absorbent for Drinking Water Safety and Sustainable Development. Sustainability. 2021; 13 (2):883.
Chicago/Turabian StyleChangjuan Dong; Xiaomei Wu; Zhanyi Gao; Peiling Yang; Mohd Khan. 2021. "A Novel and Efficient Metal Oxide Fluoride Absorbent for Drinking Water Safety and Sustainable Development." Sustainability 13, no. 2: 883.
During the last 70 years the development of irrigation schemes has made great progress in China. The total irrigated area has been developed from 15.9 million ha in 1949 to 68.3 million ha in 2018, and the irrigated area contributes 75% of the total grain production and 90% of cash crop production. Technical research and application have contributed significantly to the development of irrigation schemes in China. This paper introduces the irrigation and drainage developments, and technical research and application on water resource projects and conjunctive use water resources, canal systems, low‐pressure pipeline and on‐farm irrigation techniques, drainage techniques, information technology, reform of management mechanisms and standards for design and construction. This paper also introduces the planning for modernization of irrigation schemes in China. © 2020 John Wiley & Sons, Ltd.
Mingzhong Chen; Zhanyi Gao; Yunhui Wang. Overall introduction to irrigation and drainage development and modernization in China *. Irrigation and Drainage 2020, 69, 8 -18.
AMA StyleMingzhong Chen, Zhanyi Gao, Yunhui Wang. Overall introduction to irrigation and drainage development and modernization in China *. Irrigation and Drainage. 2020; 69 (S2):8-18.
Chicago/Turabian StyleMingzhong Chen; Zhanyi Gao; Yunhui Wang. 2020. "Overall introduction to irrigation and drainage development and modernization in China *." Irrigation and Drainage 69, no. S2: 8-18.
Access to safe drinking water in rural areas is a basic need of the population. Since 2000 China has invested significantly in improving rural drinking water safety nationwide as an important measure to alleviate poverty and promote rural development. In 2009, China achieved the millennium development goal (MDG) of halving the ratio of the population without access to safe drinking water by 2015. Water quality, water quantity, guaranteed probability of water source and convenience of water acquisition are the four major factors in evaluating drinking water safety. Technology and innovative equipment for water purification, disinfection, construction models and management technology and institutions have been developed to support the large‐scale construction and management of rural drinking water supply projects during the last 20 years. This paper presents the technical progress and experience accumulated in the construction and management of the rural drinking water supply in China. © 2020 John Wiley & Sons, Ltd.
Weikun Song; Zhanyi Gao; Meng Hu; Xiaomei Wu; Yannan Jia; Xiaoqin Li; YaQiong Hu; Lisha Liao. Development and technology of rural drinking water supply in China *. Irrigation and Drainage 2020, 69, 187 -198.
AMA StyleWeikun Song, Zhanyi Gao, Meng Hu, Xiaomei Wu, Yannan Jia, Xiaoqin Li, YaQiong Hu, Lisha Liao. Development and technology of rural drinking water supply in China *. Irrigation and Drainage. 2020; 69 (S2):187-198.
Chicago/Turabian StyleWeikun Song; Zhanyi Gao; Meng Hu; Xiaomei Wu; Yannan Jia; Xiaoqin Li; YaQiong Hu; Lisha Liao. 2020. "Development and technology of rural drinking water supply in China *." Irrigation and Drainage 69, no. S2: 187-198.
We are living in a changing world. The sustainable development goals (SDGs) launched by the United Nations highlight that water is closely linked to a number of key global challenges. Agricultural water management is vital to food security and sustainable rural development. The International Commission on Irrigation and Drainage (ICID) has realigned its vision and dedicated itself to a mission to support sustainable rural development by formulating and implementing the vision of ICID for 2030. As a member country of ICID, China, with the largest population and agricultural production, puts great importance on improving agricultural water management for achieving food security under water shortage and a growing demand for agricultural production. China has been working at two levels to enhance agricultural water management. At on‐farm level China has worked out plans for developing high‐standard farmland by highlighting integrated water and land management; at system level China is working on plans for the modernization of irrigation and drainage systems by upgrading systems and applying information (IT) and automation technologies. This paper summarizes the objectives, tasks and measures for developing high‐standard farmland in China. © 2020 John Wiley & Sons, Ltd.
Zhanyi Gao. CHINA'S PLANS AND ACTION ON IMPLEMENTATION OF ICID VISION 2030 †. Irrigation and Drainage 2020, 69, 303 -306.
AMA StyleZhanyi Gao. CHINA'S PLANS AND ACTION ON IMPLEMENTATION OF ICID VISION 2030 †. Irrigation and Drainage. 2020; 69 (2):303-306.
Chicago/Turabian StyleZhanyi Gao. 2020. "CHINA'S PLANS AND ACTION ON IMPLEMENTATION OF ICID VISION 2030 †." Irrigation and Drainage 69, no. 2: 303-306.
Irrigation performance assessment is an important step in ensuring sustainable agricultural development and improving the capacity of irrigation water management. In this paper, we examined irrigation water management in the Jiamakou Irrigation Scheme in the province of Shanxi (China) using four typical indicators, namely adequacy, efficiency, dependability, and equity. These indicators were calculated both globally and by grouping the data according to different irrigation processes (water allocation and water delivery). Results show that water was poorly allocated, and crop water requirements calculated through the FAO56 Penman-Monteith method was not met timely by scheduled water. They indicate that the overall performance of the scheme was relatively poor, owing to dismal water allocation. Nevertheless, water delivery performance was good, indicating that the scheme was able to deliver adequate and dependable water in an equitable and efficient manner. Our findings suggest that farmers should be trained in allocating irrigation water. The study provides insights into the current behavior of the irrigation scheme and may be used as a base for improvement of irrigation performance.
Yumiao Fan; Zhanyi Gao; Shaoli Wang; Haorui Chen; Jing Liu. Evaluation of the Water Allocation and Delivery Performance of Jiamakou Irrigation Scheme, Shanxi, China. Water 2018, 10, 654 .
AMA StyleYumiao Fan, Zhanyi Gao, Shaoli Wang, Haorui Chen, Jing Liu. Evaluation of the Water Allocation and Delivery Performance of Jiamakou Irrigation Scheme, Shanxi, China. Water. 2018; 10 (5):654.
Chicago/Turabian StyleYumiao Fan; Zhanyi Gao; Shaoli Wang; Haorui Chen; Jing Liu. 2018. "Evaluation of the Water Allocation and Delivery Performance of Jiamakou Irrigation Scheme, Shanxi, China." Water 10, no. 5: 654.
Solar energy is considered as one of the cleanest forms of energy sources. Meanwhile, many studies have used solar power for water pumping, which is an economically attractive solar energy application since the year of 1615. To better understand the history of the development of solar energy irrigation, a bibliometric analysis of publications on solar energy pumping research from 1956 to 2015 in the sci-direct database is presented here. The analysis informs of the growing trends and indicates that “water”, “solar”, and “soil” are hot topics of research on solar energy irrigation during this period. The language of the publications, publication output, journal distribution, countries and territories of these publications, hot topics and highly cited papers have been assessed. The top 10 countries/territories were ranked according to their total number of articles (TA), single country articles (SCA), internationally collaborative articles (ICA) and first author articles (FAA). Meanwhile, the processes of solar energy installations for pumping irrigation water can be divided into three stages, including photo-thermal conversion stage, solar energy-thermal-electric power conversion stage and photovoltaic conversion stage.
Yunxin Zhang; Zhanyi Gao; Yan Lei Jia. A Bibliometric Analysis of Publications on Solar Pumping Irrigation. Geobiotechnological Solutions to Anthropogenic Disturbances 2018, 303 -315.
AMA StyleYunxin Zhang, Zhanyi Gao, Yan Lei Jia. A Bibliometric Analysis of Publications on Solar Pumping Irrigation. Geobiotechnological Solutions to Anthropogenic Disturbances. 2018; ():303-315.
Chicago/Turabian StyleYunxin Zhang; Zhanyi Gao; Yan Lei Jia. 2018. "A Bibliometric Analysis of Publications on Solar Pumping Irrigation." Geobiotechnological Solutions to Anthropogenic Disturbances , no. : 303-315.
Solar energy is considered a clean and renewable and safe energy source. With the development of photovoltaic (PV) technology and reduction in costs of PV cells and modules, solar PV pumping irrigation has been widely applied throughout the world. Applying together with micro irrigation technology, PV pumping irrigation has demonstrated a robust fusion in rural development, ecological conservation, and a viable technology for increasing farmers’ incomes and living standards by reducing poverty, and improving the living conditions of women by reducing labour intensity. This paper presents innovations in solar PV pumping technology, and a new business model and policy for enhancing the extension of solar PV pumping irrigation technology. Copyright © 2017 John Wiley & Sons, Ltd.
Zhanyi Gao; Yunxin Zhang; Lihui Gao; Ruoxi Li. Progress on Solar Photovoltaic Pumping Irrigation Technology. Irrigation and Drainage 2017, 67, 89 -96.
AMA StyleZhanyi Gao, Yunxin Zhang, Lihui Gao, Ruoxi Li. Progress on Solar Photovoltaic Pumping Irrigation Technology. Irrigation and Drainage. 2017; 67 (1):89-96.
Chicago/Turabian StyleZhanyi Gao; Yunxin Zhang; Lihui Gao; Ruoxi Li. 2017. "Progress on Solar Photovoltaic Pumping Irrigation Technology." Irrigation and Drainage 67, no. 1: 89-96.
Located in north-east China, Hei Longjiang Province is the largest paddy rice-growing province in China. It plays an important role in guaranteeing food security for the whole country. Irrigation is essential for growing rice in the area and a large area of paddy rice is irrigated with groundwater pumping. The province is blessed with long hours of sunshine and is rich in solar energy. Therefore, a solar photovoltaic (PV) pumping system is an ideal solution for groundwater pumping for growing paddy rice in the province. A PV pumping system can not only save fuel and electricity, but can also achieve green growth and sustainable development. A pilot study for application of photovoltaic pumping irrigation for paddy rice was carried out in Hong Wei Farm in Hei Longjiang Province in 2014. This paper summarizes the pilot study of the PV pumping system in its technical, economic and environmental aspects. The results show that the photovoltaic pumping system is a solution for groundwater pumping to grow paddy rice in the region. Copyright © 2016 John Wiley & Sons, Ltd.RésuméLa province de Hei Longjiang, au nord-est de la Chine, est la province de Chine où l'on cultive le plus du riz paddy. Ce riz joue un rôle important pour garantir la sécurité alimentaire de l'ensemble du pays. L'irrigation est essentielle pour la culture du riz dans la région et une grande superficie de riz paddy est irriguée avec de l'eau pompée dans les nappes. La province connait de longues heures d'ensoleillement et elle est riche en énergie solaire. Par conséquent, le système de pompage solaire photovoltaïque (PV) est une solution idéale pour le pompage des eaux souterraines pour la culture de riz paddy dans la province. PV peut non seulement économiser du carburant et de l'électricité, mais aussi s'avérer compatible avec la croissance verte et les objectifs de développement durable. Une étude pilote pour l'application de PV pour l'irrigation du riz paddy a été réalisée en 2014 à la ferme de Hong Wei dans la province de Hei Longjiang. Le présent document résume l'étude pilote du système de pompage solaire photovoltaïque dans les aspects techniques, économiques et environnementaux. Les résultats montrent que le système de pompage photovoltaïque est une solution pour le pompage pour les eaux souterraines en vue de la culture du riz paddy dans la région. Copyright © 2016 John Wiley & Sons, Ltd.
Zhanyi Gao; Jing Liu. Application of Photovoltaic Pumping Technology for Growing Paddy Rice in China. Irrigation and Drainage 2016, 65, 3 -8.
AMA StyleZhanyi Gao, Jing Liu. Application of Photovoltaic Pumping Technology for Growing Paddy Rice in China. Irrigation and Drainage. 2016; 65 (1):3-8.
Chicago/Turabian StyleZhanyi Gao; Jing Liu. 2016. "Application of Photovoltaic Pumping Technology for Growing Paddy Rice in China." Irrigation and Drainage 65, no. 1: 3-8.
Gao Zhanyi. EDITORIAL†. Irrigation and Drainage 2014, 63, 143 -145.
AMA StyleGao Zhanyi. EDITORIAL†. Irrigation and Drainage. 2014; 63 (2):143-145.
Chicago/Turabian StyleGao Zhanyi. 2014. "EDITORIAL†." Irrigation and Drainage 63, no. 2: 143-145.
Soil salinization has random characteristics because of the influences of natural and anthropogenic factors. Therefore, a study on the dynamic prediction model of soil salinity is important for irrigation water management in salinization irrigation districts. In the present paper, the theory of supporting vector machine was introduced in the dynamic prediction of soil electrical conductivity (EC) values. Based on groundwater depth, irrigation water volume, and evaporation data from 1991 to 2010 in the Shahaoqu subdistrict of the Hetao irrigation district in Inner Mongolia, a dynamic prediction model of soil EC value was developed. The results show that the fitted values, tested values and the predicted values of the model have little difference from the real values. The absolute value of the fitting mean relative error is 2.14%, that of the testing mean relative error is 3.48%, and that of the predicting mean relative error is 6.37%. Compared with the Artificial Neural Network (ANN) model, the results show that SVM predictors perform better in forecasting soil EC values than the ANN model. The feasibility of the application of SVMs to soil salinity forecasting was demonstrated and their performance in soil salinity data analysis was proven.
Xiaoyan Guan; Shaoli Wang; Zhanyi Gao; Ye Lv. Dynamic prediction of soil salinization in an irrigation district based on the support vector machine. Mathematical and Computer Modelling 2011, 58, 719 -724.
AMA StyleXiaoyan Guan, Shaoli Wang, Zhanyi Gao, Ye Lv. Dynamic prediction of soil salinization in an irrigation district based on the support vector machine. Mathematical and Computer Modelling. 2011; 58 (3-4):719-724.
Chicago/Turabian StyleXiaoyan Guan; Shaoli Wang; Zhanyi Gao; Ye Lv. 2011. "Dynamic prediction of soil salinization in an irrigation district based on the support vector machine." Mathematical and Computer Modelling 58, no. 3-4: 719-724.