耕地细碎化与农业全要素生产率的空间格局及空间相关性探析

Spatial Pattern and Spatial Correlation of Cultivated Land Fragmentation and Agricultural Total Factor Productivity

以鄂东南部分区县为研究区域,基于空间自相关模型分析耕地细碎化与农业全要素生产率的空间格局,探讨耕地细碎化与农业全要素生产率的空间关系。结果表明:岗地平原区耕地细碎化综合程度低于低山丘陵区;岗地平原区农业全要素生产率高于低山丘陵区。耕地细碎化综合程度与农业全要素生产率在乡镇层面上均存在显著空间正相关性,耕地细碎化综合程度高-高集聚区主要分布在低山丘陵区;农业全要素生产率高-高集聚区主要分布在岗地平原区。耕地细碎化综合程度与农业全要素生产率呈空间负相关,其评价指标与农业全要素生产率的空间相关性具有空间异质性。不同地形地貌地区,应采取差异化措施治理耕地细碎化,以提高农业全要素生产率。

Taking some districts and counties of southeast Hubei as the research area,spatial autocorrelation model was used to analyze the spatial pattern of cultivated land fragmentation and agricultural total factor productivity,and discuss the spatial relationship between cultivated land fragmentation and agricultural total factor productivity in different topography and geomorphology areas.Results showed that the comprehensive degree of cultivated land fragmentation in the hillock and plain area was lower than that in the low mountain and hilly area,and the agricultural total factor productivity was higher than that in the low mountain and hilly area.Comprehensive degree of cultivated land fragmentation and agricultural total factor productivity both had significant spatial positive correlations at the inter-township level,the high-high agglomeration areas of comprehensive degree of cultivated land fragmentation were mainly distributed in the low mountain and hilly area,and the high-high agglomeration areas of agricultural total factor productivity were mainly distributed in the hillock and plain area.There was a negative spatial correlation between comprehensive degree of cultivated land fragmentation and agricultural total factor productivity,but the spatial correlation between the evaluation indexes of cultivated land fragmentation and agricultural total factor productivity had spatial heterogeneity.Therefore,in different topography and geomorphology areas,different measures should be taken to control cultivated land fragmentation for improving agricultural total factor productivity.