广东省土地利用效率和产业结构耦合协调特征及时空演变分析

Analysis on characteristics and spatial-temporal pattern of the coupling between land use efficiency and industrial structure in Guangdong Province

土地利用和产业结构协调关系对探索高质量发展、推动经济转型升级具有重要意义。基于含有非期望产出的超效率SBM模型和空间向量夹角法,结合耦合协调和空间自相关模型探究广东省2005—2020年土地利用效率与产业结构耦合协调度的时空演变特征及空间相关性。结果表明:①广东省土地利用效率大致呈“W”型趋势,产业结构高级化水平总体持续上升,两者增减趋势存在相似性;②土地利用效率和产业结构耦合协调度跨度较大,大部分城市处于良好协调状态,随时间推进有明显提升;③耦合协调度空间格局具有较强的稳定性,水平差异呈现为粤东>珠三角>粤西>粤北,地区间差异正在缩小,珠三角和粤西地区的内部差异逐渐扩大,粤东和粤北地区的内部差异缩小;④耦合协调度总体呈现“集聚———随机”趋势,空间聚集现象逐渐减弱,并且冷、热点区域影响力下降。

Reasonable coordination between land use and industrial structure is of great significance to explore high-quality development and promote economic transformation and upgrading.Based on the super-efficiency SBM model with undesired output and the spatial vector Angle method,this paper explored the spatial-temporal evolution characteristics and spatial correlation of the coupling coordination degree between land use efficiency and industrial structure in Guangdong Province from 2005 to 2020 by combining the coupling coordination model and spatial autocorrelation model.The results showed that:①The land use efficiency of Guangdong Province showed a“W”trend,and the level of industrial structure upgrading kept rising,the two trends were similar.②The coupling coordination degree between land use efficiency and industrial structure had a large span,most cities were in a good coordination state,which had significantly improved over time.③The spatial pattern of coupling coordination degree was stable,it presented as East Guangdong>Pearl River Delta>West Guangdong>North Guangdong.The regional difference was narrowing.The internal difference of Pearl River Delta and west Guangdong was gradually expanding,then the internal difference of east Guangdong and North Guangdong was narrowing.④The coupling coordination degree generally presented a trend from agglomeration to random.The spatial aggregation phenomenon gradually weakened,and the influence of both cold and hot spots decreased.