Evaluation and spatiotemporal evolution of agricultural water use efficiency in the Yangtze River Economic Belt——Based on SBM-Malmquist model

doi:10.14088/j.cnki.issn0439-8114.2023.04.012

Abstract

Abstract: Using the SBM model and Malmquist index method, the agricultural water use efficiency of 11 provinces （cities） in the Yangtze River Economic Belt and its spatiotemporal evolution trend based on nuclear density analysis tools were analyzed. The results showed that from 2011 to 2020, the overall agricultural water use efficiency of 11 provinces （cities） in the Yangtze River Economic Belt did not reach an effective state, and the average agricultural water use efficiency ranked in the following order： downstream region>upstream region>midstream region;technological progress and neutral and unbiased green technological progress were the main forces driving efficiency improvement;the concentration degree of inter-provincial differentiation of total factor production efficiency gradually weakened due to sequential changes at any time;according to spatial differentiation, the change index of total factor productivity was ranked in the order of midstream region>upstream region>downstream region. In the future, it was necessary to coordinate regional governance needs and development goals, promote the upgrading of water resources structure, strengthen scientific and technological investment and innovation, and provide impetus for improving agricultural water efficiency.

Key words: agricultural water use efficiency, SBM model, Malmquist index, spatiotemporal evolution, Yangtze River Economic Belt

CLC Number:

F124.5
F224

MIAO Xu-fei, LI Ang, YU Yuan-meng, SU Mei. Evaluation and spatiotemporal evolution of agricultural water use efficiency in the Yangtze River Economic Belt——Based on SBM-Malmquist model[J]. HUBEI AGRICULTURAL SCIENCES, 2023, 62(4): 69-76.

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