| 刘继龙,张振华,谢恒星,李清翠,冯雪.胶东果园土壤电导率的时空分布特征及Kriging 估值[J].干旱地区农业研究,2006,(5):193~197 |
| 胶东果园土壤电导率的时空分布特征及Kriging 估值 |
| Spatio-temporal distribution characteristics and Kriging estimation of soil electrical conductivity in orchard in Jiaodong |
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| DOI：10.7606/j.issn.1000-7601.2006.05.40 |
| 中文关键词: 土壤电导率 时空变异 Kriging估值 Moran’sI系数 |
| 英文关键词:soil electrical conductivity spatio-temporal variability Kriging estimation Moran's I coefficient |
| 基金项目:烟台师范学院重点基金项目(043201)； 学校人才引进基金(000444) |
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| 中文摘要: |
| 应用传统统计学和地统计学方法,分析了2005年411月期间烟台农科院苹果园土壤电导率的空间变异性,并进行了Moran’s I系数分析和Kriging估值。结果表明:土壤电导率具有明显的空间变异性,半方差函数和Moran’s I系数分析说明了4月30日、6月29日和11月16日的空间自相关范围较大,相关性较强;4月20日、7月14日和8月16日的变程偏小,空间相关性较弱。土壤电导率的均值和变异系数随时间变化总体上近似呈现出先增加后减小的趋势,在空间分布上不同时期果园表层土壤电导率分布格局差异较大,土壤电导率的破碎化比较严重。 |
| 英文摘要: |
| Spatial variability of soil electrical conductivity in Yantai orchard from April to November in 2005 was analyzed with the classical statistics and geo-statistics,and the Moran's I coefficient analysis and Kriging estimation were also processed.The results showed that soil electrical conductivity had obviously spatial variability,and semi-variance and Moran's I coefficient analysis accordantly illuminated that the spatial correlation range was large and the relativity was strong on 30 April,29 June and 16 November;while the spatial correlation range was small and the relativity was weak on 20 April,14 July and 16 August.The mean value and variation coefficient of soil electrical conductivity increased at first and then decreased as a whole;the electrical conductivity of surface soil at different periods was obviously different in spatial distribution,and the distribution fragmenting of soil electrical conductivity was very serious. |
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