辽西乡镇域耕地土壤中微量元素的空间变异性分析  

Analysis on spatial heterogeneity of moderate microelement in cultivated soils of rural town of western Liaoning

作　　者：李广[1] 王振营[2] 刘作新[2] 武玉峰[3] 司鹏飞[1] 刘永光[1] 李淑芬[1] 

机构地区：[1]辽宁省农业科学院,辽宁沈阳110161 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 [3]辽宁省水利水电科学研究院,辽宁沈阳110003

出　　处：《土壤通报》2011年第2期372-377,共6页Chinese Journal of Soil Science

基　　金：十一五国家科技支撑计划(2008BADA4B06)资助

摘　　要：以辽西阜新县建设镇为研究区域,采用传统统计学和地统计学相结合的方法,对该区域内耕地中微量元素的含量和空间变异特征以及克立格空间插值进行研究,结果表明:土壤中Zn元素变异系数最大,为70%,Ca和Cu居中,变异系数分别为58.81%和56.36%,Mn变异系数最小,为10.78%;高程与土壤各养分均呈负相关性,其中Mg、Fe和Mn、Zn、Cu元素分别与高程表现为显著和极显著的负相关;除Zn以外,其余各元素的块金值与基台值之比皆小于0.25,分别表现为中等空间相关性和高度空间相关性;插值结果表明,Cu在东南部富集,Zn由东北向西南呈现明显的阶梯变化趋势,其它个元素空间差异不大。The traditional statistics and geostatistics method were combined to be used to investigate the soil moderate microelement content,spatial variability characteristics and spatial interpolation by use the method of Kriging in cultivated soil of Fuxin in the western town of Liaoning.The results showed that coefficients of variation of Zn is the greatest among all,which is 70%,Ca,Cu are placed in the middle with 58.81% and 56.36%,the coefficients of variation of Mn is the smallest,which is only 10.78%;there is a negative correlation between the height and soil nutrient elements.Mg,Fe are negative correlated with height（P 0.05）,while the Mn,Zn have a significant negative correlation（P 0.01）.The C0 /（C＋C0）of nutrient element are all less than 0.25 except Zn,they showed intermediate spatial dependence and strong spatial structures respectively;it was shown from Kriging analysis that the Cu is mainly distributed in the southeast,while Zn have a significant step trend from the northeast to southwest,the spatial variability of other elements are not remarkable.

关 键 词：耕地土壤 中微量元素 空间变异 地统计学 传统统计学 

分 类 号：S158.9[农业科学—土壤学]