Measurement of Water Resource Utilization Efficiency and Spatio-temporal Variation in the Yangtze River Economic Belt： An Empirical Study Based on Two-stage Network SBM-DEA

HONG Xiao-yu, YU Qian-wen, SUN Ze-hao, ZHU Min, XU Xia

China Rural Water and Hydropower . 2026, (1): 22 -29 . DOI: 10.12396/znsd.2500313