GUO Hui,LI Yangbing,GAN Caihong,et al. Research on the Spatial Characteristics of Cultivated Land Fragment in the Central Region of the Three Gorges Reservoir Area：a Case Study in Fengjie County, Chongqing [J].期刊社,2016,33(03):51-58.[doi:10.11721/cqnuj20160307]
三峡库区腹地耕地细碎化空间特征研究——以奉节县为例
- Title:
-
Research on the Spatial Characteristics of Cultivated Land Fragment in the Central Region of the Three Gorges Reservoir Area：a Case Study in Fengjie County, Chongqing
- 分类号:
- P967; F301.2
- 文献标志码:
- A
- 摘要:
-
以奉节县的27个乡镇为研究区，借助ArcGIS，openGeoDa空间统计分析软件等软件，选取7个能表征耕地细碎化的景观指数，结合主成分分析方法和空间自相关分析法，综合测算耕地细碎化和耕地分布的空间自相关程度，分析了三峡库区腹地奉节县27个乡镇2012年耕地细碎化特征。结果表明：1) 耕地细碎化综合指标反映北部乡镇耕地细碎化程度要比南部乡镇低，最严重的是庙湾，其次是尖角、五马、九树、吐祥等乡镇，而耕地分布最为集中的是康坪、三江；2) 耕地细碎化度在研究区既局部集聚显著，表现出空间正相关，同时局部离散显著，又具有较强的空间负相关；3) 研究区耕地细碎化度表现出较为明显的空间分异格局，呈高-高关联型有青龙、五马、杨坪、新治等4个乡镇，是局部高值集聚类型；高-低关联型是安坪，属局部高值离散类型；低-低关联型有三江、黄井2个乡镇，属局部低值集聚类型。研究结果对转变三峡库区腹地耕地利用方式、优化耕地利用结构、提高耕地利用效率从而促进当地农业生产、确保农业产出及保障库区粮食安全具有重要意义。
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