左右江革命老区耕地破碎化及空间集聚格局分析  

Analysis of Cultivated Land Fragmentation and Spatial Agglomeration Pattern in Zuoyoujiang Old Revolutionary Base Areas

作　　者：韦燕飞[1] 李莹[1] 童新华[2] 

机构地区：[1]广西师范学院国土资源与测绘学院,广西南宁530001 [2]广西师范学院地理科学与规划学院,广西南宁530001

出　　处：《国土资源科技管理》2016年第5期9-15,共7页Scientific and Technological Management of Land and Resources

摘　　要：为探究耕地破碎化的空间分异程度和集聚格局,基于2013年Landsat TM影像的耕地数据,构建基于景观格局指数的耕地破碎化综合评价体系,采用空间自相关的空间统计方法定量描述耕地破碎化的空间分布特征。结果表明:左右江革命老区耕地破碎化综合值呈现东高西低的分布格局;耕地破碎化分布具有空间正相关性且集聚程度由高到底的指标有:破碎化综合值>斑块密度>聚合度>连通度,空间负相关性的指标只有斑块平均最邻近距离;表明耕地破碎化空间分布具有负相关性的指标只有平均最邻近距离。LISA聚集图表明,H-H型集中分布在区域东部,L-L型主要分布区域西部,而H-L型分布于西南部。该研究对土地整治、耕地可持续利用和农村经济发展提供决策参考。In order to explore the spatial differentiation and aggregation pattern of cultivated land fragmentation （CLF）,cultivated land data was based on the Landsat TM images in 2013. And this paper built index system of comprehensive evaluation of CLF,which is based on landscape pattern. Then, the CLF of the spatial distribution characteristics were quantitatively described by using the spatial autocorrelation spatial statistical methods. The results showed that the distribution pattern of CLF＇s comprehensive value in Zuoyoujiang Old Revolutionary Base Areas was high in the east part and low in the west. What＇s more,the distribution of CLF had spatial correlation. And the spatial autocorrelation indicated that the accumulation order of four land fragmentation indices was：the comprehensive value of CLF〉 PD 〉AI〉 COHESION. But ENN_MN was negative correlation,which showed that spatial distribution of CLF had negative correlation index was only ENN_MN. In LISA figures,the high-high cluster mainly gathered in eastern area, the low- low cluster mainly distributed in western regions and the high-low cluster was distributed in the southwest. The study provided decision-making reference for land reclamation, sustainable utilization of cultivated land and rural economic development.

关 键 词：耕地破碎化 空间集聚格局 景观指数 空间自相关 左右江革命老区 

分 类 号：F321.1[经济管理—产业经济]