Analysis of Spatial and Temporal Characteristics of Agricultural Water Use Efficiency in the Yellow River Basin
In order to reveal the spatial and temporal characteristics of agricultural water use efficiency in the Yellow River Basin and to pro-vide a theoretical basis for the efficient management of agricultural water resources,this study employed the stochastic frontier production function to measure the agricultural water use efficiency of 79 prefecture-level cities in the Yellow River Basin from 2000 to 2021.Combined with Stata 15.0 and ArcGIS 10.7 software,deeply analyzed the spatial and temporal evolution of agricultural water use efficiency,and its re-gional differentiation status.The results show that during the study period,the overall level of agricultural water use efficiency in the Yellow River Basin is low,but it shows a steady growth trend,and the difference value between prefecture-level cities is basically maintained in a relatively stable state.The spatial differentiation characteristics of agricultural water use efficiency are significant.Medium and low efficiency prefecture-level cities are mainly located in the upper and middle reaches of the Yellow River,while high efficiency cities are primarily con-centrated in Shandong and Henan provinces.The distribution of efficiency kernel density is generally consistent with the distribution of major grain-producing areas in China.Notably,the agricultural water use efficiency of some prefecture-level cities in the Hetao irrigation area,western Henan,and the Guanzhong area has significantly improved during the study period.There are significant differences in agricultural water use efficiency between the upper,middle,and lower reaches of the Yellow River Basin and among provinces(regions).The order of agricultural water use efficiency between basins is downstream＞midstream＞upstream,and among provinces,it is Shandong＞Henan＞Shaanxi＞Inner Mongolia＞Shanxi＞Gansu＞Qinghai＞Ningxia.However,the order of efficiency improvement is the opposite.
agricultural water use efficiencystochastic frontier production functionspatial-temporal characteristicsYellow River Basin
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