Presenter
Dr. He Huaxiang, China institute of water resources and hydropower research
Co-author(s)
Dr. Chen He, China institute of water resources and hydropower research
Sub-theme
2. Promoting Water Efficiency, Productivity and Services
Topic
2-1. Water supply and demand management
Body
The intensification of global drought risk poses severe challenges to the adaptive management of water resources. In the face of extreme drought events, both supply and demand of water resources play an important role. In the perspective of the water demand side, water demand can be divided into several demand levels based on Maslow's demand hierarchy theory. Focusing on how to quantitatively analyze the grading threshold, a research framework is proposed to determine the grading threshold of the full range of water users' demand. For domestic water users, the planned behavior theory is used to analyze the reasons for the differences in water use behavior when people encounter different levels of droughts. According to the main cause survey data obtained in the questionnaire, the discrete survey data are randomly and continuously distributed, and then the threshold value is calculated. For industrial water users, the attribution analysis method is used to analyze the reasons for the differences in water use behavior of industrial industries in different droughts on the basis of enterprise questionnaire survey and industrial water use statistics. According to the ranking of the contribution of the industrial industry to social public welfare and economy, and in combination with the tolerance of the production process to water fluctuation in each industrial industry, the grading threshold is calculated by the advanced value and general value of industrial water quota. For industrial water users, on the basis of enterprise questionnaires and industrial water consumption statistics, the attribution analysis method is used to analyze the reasons for the differences in water consumption behavior of the industrial industry in different droughts, and For agricultural water users, the crop yield model is used to construct the relationship between the crop yield and the water deficit at each stage of the growth period so as to determine the water use grading threshold under different yield reduction objectives. The research framework can effectively guide the managers on how to carry out the hierarchical management of water demand and analyze its internal driving factors. It provides technical support for guiding the formulation of water demand-side adaptive strategy under extreme drought events.