Study on water footprint and water efficiency of cereal production in the Huai River basin
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.
Huai River basinwater footprintcereal productionwater efficiencyspatial and temporal evolution
万方数据
维普
