Can integration of rural primary,secondary and tertiary industries promote agricultural green development?A case study of 579 counties in China's Yangtze River Economic Belt
This research uses panel data of 579 counties in China's Yangtze River Economic Belt(YREB)from 2006 to 2021 to explore the impacts and nonlinear adjustment mechanisms of integration of rural primary,secondary and tertiary industries on agricultural green development using fixed-effects models and threshold models.The main conclusions show that:(1)During the study period,the level of agricultural green development and the integration of rural primary,secondary and tertiary industries index in the counties of the YREB showed a fluctuating upward trend,with a spatial divergence pattern of downstream＞midstream＞upstream.(2)The integration of rural primary,secondary and tertiary industries in the counties of the YREB can significantly promote the agricultural green development,but there is regional heterogeneity in the impact effect,manifested as downstream＞midstream＞upstream.(3)There is a double-threshold in the impact of the integration of rural primary,secondary and tertiary industries on agricultural green development.The whole region and midstream counties are characterized by a"leapfrog"growth.Downstream counties are characterized by a"U"-shaped pattern.Upstream counties show increasing marginal effects followed by decreasing marginal effects.The impact of the integration of rural primary,secondary and tertiary industries on agricultural green development is characterized by the existence of a double-threshold for industrial upgrading.The whole region and midstream and upstream counties are characterized by a"leapfrog"growth.Downstream counties are characterized by a"growth-buffer-growth"pattern.The impact of the integration of rural primary,secondary and tertiary industries on agricultural green development is characterized by the existence of a double-threshold for technological innovation.The whole regional midstream counties are characterized by a"leapfrog"growth.Downstream counties are characterized by a"growth-buffer-growth"pattern.There is no threshold effect in upstream counties.The results of the study can provide a reference for decision-making to promote agricultural green development in China,as well as lessons for agricultural green development in the remaining less developed countries.
integration of rural primary,secondary and tertiary industriesagricultural green de-velopmentindustrial upgradingtechnological innovation
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