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| 淮河流域谷物生产水足迹及用水效率研究 |
| Study on water footprint and water efficiency of cereal production in the Huai River basin |
| 投稿时间：2023-05-24 |
| DOI：10.13254/j.jare.2023.0332 |
| 中文关键词: 淮河流域，水足迹，谷物生产，用水效率，时空演变 |
| 英文关键词: Huai River basin, water footprint, cereal production, water efficiency, spatial and temporal evolution |
| 基金项目:中国工程科技发展战略安徽研究院咨询研究项目子课题（2020-5-2） |
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| 中文摘要: |
| 为研究淮河流域水稻、小麦、玉米三大谷类粮食作物生产用水总量和用水效率，保障粮食安全，促进粮食生产可持续发展，本研究以淮河及沂-沭-泗水系的35个地级市为研究对象，基于2000—2019年谷物生产、水资源、气候等数据，采用PenmanMonteith模型、探索性空间数据分析（ESDA）模型、空间杜宾模型，对流域谷物生产水足迹强度进行测度以反映其用水效率，并分析其时空演变特征及影响因素。结果表明，2000—2019年淮河流域谷物生产水足迹逐渐趋于稳定，谷物生产水足迹强度整体下降82.86%。水足迹强度空间集聚显著，集聚状态逐渐稳定。社会经济条件、农业生产投入、农业生产条件、自然条件与资源禀赋对谷物生产水足迹强度影响显著。淮河流域谷物生产用水总量整体增加，用水效率总体不断提升。淮河流域谷物生产用水效率存在显著的空间差异，效率较高的区域为淮河干流下游及沂-沭-泗水系，效率较低的区域为淮河干流安徽段。农村经济发展水平、科技发展水平与有效灌溉面积等因素的提升能促进谷物生产用水效率的提升，城镇化水平、化肥施用量、年日照时长、年平均气温等因素的提升则会对其产生抑制作用，农村经济发展水平、城镇化水平、年平均气温等因素通过要素流动、技术转移等产生空间溢出效应。 |
| 英文摘要: |
| This study explores the total production water use and efficiency of three major cereal crops, namely rice, wheat, and corn, in the Huai River region and provides a reference for ensuring food security and promoting the sustainable development of food production. The study took 35 prefecture-level cities in the Huai River and Yishusi water systems as the study objects, and based on data on cereal production, water resources, and climate in sub-cities from 2000 to 2019, the Penman-Monteith model, Exploratory Spacial Data Analysis （ESDA）model and spatial Durbin model were used to measure the water footprint intensity of cereal production in the basin to reflect its water use efficiency and analyze its spatial and temporal evolution characteristics and influencing factors. The water footprint of cereal production in the Huai River basin tended to stabilize, and the overall water footprint intensity of cereal production decreased by 82.86%. The spatial clustering of the water footprint intensity was significant, and the clustering state gradually stabilized. Socio-economic conditions, agricultural production inputs, agricultural production conditions, natural conditions, and resource endowments had a significant impact on the water footprint intensity of cereal production. The study concludes that the total amount of water used for cereal production in the Huai River basin has increased as a whole, and water use efficiency has generally improved. There are significant spatial differences in the water use efficiency of cereal production in the Huai River basin, with the higher areas being the lower reaches of the main stream of the Huai River and the Yishusi system, and the lower areas being the Anhui section of the main stream of the Huai River. The improvement in the rural economic development level, technological development level, and effective irrigation area can promote an improvement in the water use efficiency of cereal production, while the improvement in the urbanization level, fertilizer application, annual sunshine hours, and average annual temperature will have a suppressive effect on it. |
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