甘肃省分县人均耕地警戒值空间差异分析  

Spatial Difference in Alert Values of Cultivated Land at County-level in Gansu Province

作　　者：潘竟虎[1] 胡羚[1] 

机构地区：[1]西北师范大学地理与环境科学学院,兰州730070

出　　处：《西北人口》2011年第4期89-92,共4页Northwest Population Journal

基　　金：国家社会科学基金重点项目(08AMZ003);国家自然科学基金(41061017)

摘　　要：耕地警戒值是影响政府土地管理部门加强耕地保护执法力度和国民建立耕地安全意识、参与性保护耕地的重要指标。以甘肃省87个县区为基本单元,计算了人均耕地警戒值、耕地压力指数和耕地盈余/赤字量,通过空间自相关分析和空间聚类,研究了人均耕地警戒值的县际空间分异。结果表明:2009年甘肃省人均耕地警戒值区域差异明显,Moran’s I值为0.3699,呈空间显著集簇分布特征,空间格局存在"俱乐部趋同"现象。全省耕地管理划分为3个激励-约束级;耕地盈余量最大的县是武威市凉州区,尚有35个县用于生产食物的耕地面积为赤字。The security threshold value of the per capita critical arable area is used by government as an important index for land conservation.Taking 87 counties in Gansu Province as the basic spatial unit,per capita alert values,cultivated land pressure index and the surplus/deficit volume was calculated.Regional differences in alert values of cultivated land at county-level were analyzed by using spatial autocorrelation method and spatial clustering.Results indicated that the regional distinction of alert values per capita of cultivated land in 2009 was prominent.Moran spatial correlation test indicates that there are significant spatial correlations in alert values per capita of cultivated land in Gansu,and the ＂convergence club＂ phenomenon of alert values commonly happened in Gansu in 2009.In terms of the pressure differences,a land incentives-constraint management at different levels was pointed out.Liangzhou District has the largest surplus of arable land,however,there were still 35 deficit counties in Gansu.

关 键 词：耕地警戒值 耕地压力指数 耕地盈余/赤字量 空间差异 甘肃 

分 类 号：F301.21[经济管理—产业经济]