| 湖北省县域粮食单产影响因素的空间异质性研究 |
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| 引用本文： | 潘润秋,马骏.湖北省县域粮食单产影响因素的空间异质性研究[J].测绘与空间地理信息,2017(1). |
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| 作者姓名： | 潘润秋 马骏 |
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| 作者单位： | 武汉大学资源与环境科学学院,湖北武汉,430079 |
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| 摘 要： | 在城镇化进程快速推进耕地保护形势严峻的背景下,粮食单产的区域差异研究对地区粮食安全具有重要意义。本文以湖北省粮食单产数据为基础,采用探索性数据分析方法和地理加权回归模型揭示省内县域粮食单产的空间关系和影响因素的空间异质性。结果表明:湖北省县域粮食单产具有显著的空间自相关特征,整体水平稳中有增。农村劳动力、化肥施用量、农村机械总动力和有效灌溉面积比对粮食单产具有正向促进作用和一定的空间分异规律,对农村用电量呈现出先正后负的影响,各因素的空间异质性显著。结合县域现状和因素的区域特质采取对应的有效措施应对粮食安全问题具有深远的现实意义。
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| 关 键 词： | 空间自相关 地理加权回归 粮食单产 空间异质性 |
Spatial Heterogeneity of Grain Yield per Hectare and Influence Factors in Hubei Province |
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| PAN Run-qiu,MA Jun.Spatial Heterogeneity of Grain Yield per Hectare and Influence Factors in Hubei Province[J].Geomatics & Spatial Information Technology,2017(1). |
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| Authors: | PAN Run-qiu MA Jun |
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| Abstract: | The research about regional difference of grain yield per hectare is very important for regional food security in the situation of rapid urbanization and limited arable land.Using the methods of spatial autocorrelation,and applying a geographically weighted regression (GWR) model,this paper presents spatial heterogeneity of grain yield per hectare and influence factors.The results showed that the heterogeneity of grain yield per hectare is significant in Hubei province.The influence factors of different county show a local characteristic of no-stationary intercourse.The rural labor,chemical fertilizer application amount,the total mechanization power and the effective irrigation area of the countryside factors have positive promoting effect on grain yield per hectare.To take effective measures to deal with the problem of food security has far-reaching significance. |
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| Keywords: | spatial autocorrelation Geographically Weighted Regression (GWR) grain yield per hectare spatial heterogeneity |
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