转型期土地利用效益对产业结构升级的响应程度及其影响机理

综合运用土地利用效益评价模型、响应测度模型及影响机理计量模型，从时空分异视角揭示土地利用效益及其对产业结构升级的响应程度；采用三期面板数据测算响应程度影响因子，进一步揭示其影响机理。结果表明:①土地利用效益自改革开放以来整体呈现逐年增长趋势，且表现东部沿海省份普遍较高、中西部省份及资源禀赋型省份明显较低；②土地利用效益对产业结构升级的响应系数呈现逐年递增态势，表明产业结构基本适应土地利用效益提高，能够促进土地利用效益潜力挖掘，存在空间差异明显且变化呈现拉大趋势，也就是说高值仍较高、低值依旧较低，还有呈现明显“梯度差异”；③基于响应系数的影响因子分析，在产业结构发展不同阶段的作用差异明显，生态建设是唯一均存在于所有产业结构阶段的重要正向因子，区域投资和资源节约集约在产业发展不同阶段作用正负方向差异明显，用地规模及资源集聚在不同产业发展阶段下其对产业结构升级带来土地利用效益增减作用未能体现。

Response of Land Use Efficiency to the Upgrading of Industrial Structure and Its Influence Mechanism in the Transition Period

The models of land use efficiency evaluation, response measurement and impact mechanism measurement were comprehensively used to reveal the land use efficiency and its response degree to the upgrading of industrial structure from the level of spatial and temporal differentiation. Three periods of panel data were collected to calculate the response degree influencing factors, and further reveal the impact mechanism. The results showed that: (1) The overall land use efficiency had been increasing year by year since the reform and opening up. Meanwhile, the eastern coastal provinces were generally higher, but the central and western provinces and resource endowment provinces were obviously low. (2) The response coefficient of land use efficiency to the upgrading of industrial structure showed an increasing trend year by year, indicating that the industrial structure was basically adapted to the improvement of land use efficiency. This could promote the improvement of land use efficiency. In order to tap the potential of land use efficiency, there were obvious spatial differences and the changes were widening. That is to say, the high value was still high, and the low value was still low. In the meantime, there was an obvious "gradient difference". (3) The effect of different stages of industrial structure development was significant based on the response coefficient analysis. The ecological construction was the only one that positively existed in all stages of industrial structure. The positive and negative effects of regional investment and resource saving and intensive in different stages of industrial development had obvious differences. The land use scale and resource agglomeration had no effect on land use efficiency by industrial structure upgrading in different stages of industrial development.