水利学报2023，Vol.54Issue(12)：1440-1451,12.DOI:10.13243/j.cnki.slxb.20230403
干旱区灌溉绿洲农业节水潜力形成机制与评估方法
Formation mechanism and evaluation method of agriculture water-saving potential in irrigated oasis in arid regions
摘要
Abstract
The agricultural water-saving potential and its scale effects are among the key concerns in irrigated oases of arid regions,which are crucial for oasis agricultural production,efficient utilization of water resources,and ecological health.To address the calculation of agricultural water-saving potential and the unclear formation mechanism of scale effects,this paper expounds the concepts and connotations of water intake-based water-saving and water consumption-based water-saving and proposes that the water-saving potential should not ignore the eco-logical water consumption and benefits supported by irrigation water overflow.In addition,this study also analyzes the transformation and consumption mechanism of irrigation water inside and outside the farmland in the arid irriga-tion oasis from the perspective of the water cycle.It evaluates the influence mechanisms of different water-saving measures on the water cycle processes,and reveals the water cycle mechanisms and related ecosystem response be-hind the scale effects of agricultural water-saving.Therefore,on the basis of this theory,the calculation methods of agricultural water-saving potential at different stages and scales are put forward,and the transformation relation-ship and transformation terms of agricultural water-saving at different scales of plant-field-irrigation-oasis are ana-lyzed.Finally,based on the water cycle model,a quantitative evaluation and calculation method of different water-saving potential of irrigation oasis is put forward,which takes vegetation health,river and lake stability and water-salt balance as ecological health constraints.This study provides new ideas and technical methods for scientifically evaluating agricultural water-saving potential and its impacts from the global perspective of oases.关键词
农业节水潜力/取水节水/耗水节水/尺度效应/水循环模型/生态健康阈值Key words
agricultural water-saving potential/water intake-based water-saving/water consumption-based water-saving/scale effects/water cycle model/ecological health threshold分类
农业科技引用本文复制引用
翟家齐,赵勇,刘宽,董义阳,李星..干旱区灌溉绿洲农业节水潜力形成机制与评估方法[J].水利学报,2023,54(12):1440-1451,12.基金项目
国家重点研发计划项目(2021YFC3200200) （2021YFC3200200）
国家自然科学基金项目(51979284,52025093) （51979284,52025093）
