摘要
【目的】明晰节水潜力概念,并改进计算公式。【方法】在对节水潜力概念分析整理的基础上,明确了节水潜力在不同行业之间的内涵,进而推导出面向节水来源并考虑水源置换的分行业节水潜力计算公式;在此基础上,依靠河南省规划方案,对河南省规划年节水潜力进行实例研究。【结果】河南省2025年综合节水潜力为10.72亿m^(3),2035年为16.65亿m^(3),节水潜力较为可观,分别达到现状年用水总量的4.6%和7.1%,分行业节水潜力中农业节水潜力较大。【结论】计算结果符合河南省粮食主产区的实际情形,本文推导公式具有系统、精准、深度的特点,对地区推进全程、全产、全民的系统节水工作具有指导意义。
【Background】Water scarcity in northern China is a limiting factor to its economic development and improving water management is hence essential to sustaining its development.The recently proposed water management in China can be summarized into five strategies:Prioritize water saving,balance regional variation,comprehensive remediation,and balance the roles of planning and free market played in water management,with saving water being the top priority.Various water saving policies have been proposed,some of which have been mandated.Evaluating water saving potential in a region is thus essential to alleviating the detrimental impact of its water shortage and sustaining economic and social development.Currently,there is a lack of such evaluation methods.【Objective】The purpose of this paper is to fill this gap by proposing and testing an evaluating method.【Method】Based on the primacy of water saving potential,we first clarified the connotation of water-saving potential and its interpretation in different sectors.We then derived formulae,with the sources of water in consideration,to calculate the water saving potential at regional scale.As an illustrative example,the method was applied to Henan province to help plan water management and evaluate the amount of water that the province can potentially save.【Result】The volume of the water that Henan can potentially save in 2025 is 1.072 billion m^(3),which could increase to 1.665 billion m^(3) by 2035 if the management improvements can be gradually implemented.This is massive,representing that,compared to the current water usage level,it will reduce provincial water consumption in 2025 and 2035 by 4.6%and 7.1%respectively.Among all sectors,the potential in saving agricultural water use is the greatest.【Conclusion】For Henan province,implementation of the five water management strategies could substantially improve its water usage.The method we developed is generic and can be applied to other regions helping improve their water resource management.
作者
李佳伟
水淼
左其亭
张洁祥
朱大炯
LI Jiawei;SHUI Miao;ZUO Qiting;ZHANG Jiexiang;ZHU Dajiong(School of Water Conservancy Engineering,Zhengzhou University,Zhengzhou 450001,China;Henan Water&Power Engineering Consulting Co.,Ltd.,Zhengzhou 450016,China;Zhengzhou Key Laboratory of Water Resource and Environment,Zhengzhou 450001,China)
出处
《灌溉排水学报》
CSCD
北大核心
2021年第9期141-146,共6页
Journal of Irrigation and Drainage
基金
河南省重大公益性项目(201300311500)
中国工程院重大咨询研究项目(2021-149-1-5)
郑州市协同创新重大专项(郑州大学)智库研究专项(2019ZZXT01)。
关键词
节水潜力
计算方法
河南省
评估
water saving potential
calculation method
Henan province
evaluation method
