区域节水潜力评估

Assessment of regional water saving potential

针对我国稳步推进的节水工作需求,基于自然-社会二元水循环基本规律,分析京津冀地区各行业用水过程及影响因素,从取用节水和资源节水两方面计算存量用水的极限节水潜力。结果表明:京津冀地区取用节水潜力和资源节水潜力分别为11.44亿和6.36亿m3,分别占区域总用水量的5.4%和3.0%,节水潜力有限;由分行业分析可知,农业取用节水量和资源节水量分别占总节水量的51.0%和59.3%,农业仍为区域节水重点;提出的极限节水潜力计算方法能够科学准确地测算区域或流域存量用户节水潜力,计算明晰节水目标,为区域水资源管理提供借鉴。

Given the steady progress of water-saving work in China,and based on the basic law of natural social dual water cycle,the process and influencing factors of water use in various industries in the Beijing-Tianjin-Hebei region are analyzed,and the ultimate water-saving potential of stock water is calculated from two aspects such as water-saving and resource-saving.The results show that:the water-saving potential and resource water-saving potential of the Beijing-Tianjin-Hebei region are 1.144 billion m3 and 636 million m3,respectively,accounting for 5.4% and 3.0% of the total regional water consumption,with limited water-saving potential;according to the analysis of different industries,the water-saving amount and resource water-saving amount of agriculture accounted for 51.0%and 59.3%of the total water-saving amount,respectively,agriculture is still the focus of regional water-saving;judging from research results,the calculation method of ultimate water-saving potential proposed can scientifically and accurately calculate the water-saving potential of regional or basin stock users,calculate and clarify the water-saving target,and provide a reference for regional water resources management.