广东省贫困县土地利用多功能与脱贫成效耦合协调关系及障碍诊断

The coupling coordination relationship and obstacle diagnosis of land use functions and poverty alleviation effect in the poverty-stricken counties of Guangdong Province

为探究2014—2020年广东省贫困县土地利用多功能与脱贫成效耦合协调关系及其障碍因素,本研究基于土地利用多功能与脱贫成效耦合协调机理构建评价指标体系,运用熵权法、耦合协调度模型和障碍度模型测度二者的耦合协调关系及障碍因素。结果表明:土地利用多功能与脱贫成效水平均呈增长态势且增幅水平基本相当;土地利用多功能综合评价指数均值由0.2397上升到0.2681,增长11.85%,空间上呈“核心-边缘”分布格局;脱贫成效综合评价指数均值由0.3567上升到0.3987,增长11.77%,空间上由均匀散布转向中部集聚增长;耦合协调度从0.5290上升到0.5598,增长5.82%,均以初级协调为主,空间上由整体均匀散布转向局部高等级提升;耦合协调类型以土地利用多功能滞后型为主,较为均匀散布全域;制约二者耦合协调的主要障碍因素(障碍度大于5%)相对稳定,集中于文化和社会类指标,但其障碍度呈现不同幅度上升或下降的演变态势。研究表明,广东省贫困县土地利用多功能与脱贫成效整体尚处于初级协调水平,未来促进二者耦合协调应强化对障碍因素的控制与管理,结合不同耦合协调类型分类施策,有序推进全域土地综合整治、有效衔接脱贫成果与乡村振兴、有力支撑同步协调联动机制。

The purpose of this study was to explore the coupling coordination relationship and obstacle factors of land use functions and poverty alleviation effect in the poverty-stricken counties of Guangdong Province from 2014 to 2020.Based on the coupling coordination mechanism between land use functions and poverty alleviation effect,the evaluation index system was constructed.The entropy weight method,the coupling coordination degree model,as well as the obstacle degree model were used to measure the coupling coordination relationship and the obstacle factors.The research results indicated that the land use functions and poverty alleviation effect levels were showing a generally equivalent increasing trend.Among them,the average comprehensive evaluation index of land use functions increased from 0.2397 to 0.2681,with an increase of 11.85%,presenting a“core-edge”distribution pattern,and the average comprehensive evaluation index of poverty alleviation effect increased from 0.3567 to 0.3987,with an increase of 11.77%,which had shifted from uniform distribution to central agglomeration growth on spatial differentiation.The degree of coupling coordination increased from 0.5290 to 0.5598,with an increase of 5.82%,and primary coordination being the main focus.In terms of the spatial differentiation,there was a shift from overall uniform dispersion to local high-level improvement.The type of the coupling coordination was dominated by the lag type of land use functions,which was relatively evenly distributed throughout the entire region.The main obstacle factors(with obstacle degree greater than 5%)that restricted the coupling coordination of the two were relatively stable,which concentrated on cultural and social indicators.However,the obstacle degree showed a trend of increasing or decreasing in different amplitude.In conclusion,the land use functions and poverty alleviation effect in the poverty-stricken counties of Guangdong Province were still at the primary coordination level.To promote the coupling coordination of the two,the control and management of obstacle factors should be strengthened,and the policy implementation should be classified according to different coupling coordination types,such as promoting the comprehensive land consolidation across the entire region orderly,linking the poverty alleviation achievements with rural revitalization effectively,and supporting the synchronous coordination and linkage mechanism vigorously.