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Position: Home > Articles > The Spatial Variations of NO_3~--N in Soil Journal of Irrigation and Drainage 2008,27 (3) 108-110

土壤中硝态氮的空间变异研究

作  者:
邢永强;李金荣;李金玲;常秋玲;贺传阅
单  位:
郑州大学环境与水利学院;河南省地质调查院;河南省国土资源科学研究院
关键词:
硝态氮;空间变异;区域化变量;半方差分析
摘  要:
对10 m×10 m面积内的100个土壤样点取样分析其硝态氮含量,用地质统计学中的区域化变量理论和半方差函数分析,研究结果表明2种含水率土壤中硝态氮含量在一定范围内均具有空间变异性,属于中等程度变异;硝态氮含量的半方差随着取样间距的增加而增加,最后趋于稳定,存在着空间变异结构,对其进行拟合,确定其变异程度及空间相关尺度。
译  名:
The Spatial Variations of NO_3~--N in Soil
作  者:
XING Yong-qiang1,LI Jin-rong2,LI Jin-ling3,CHANG Qiu-ling1,HE Chuan-yue1(1.Sciencial Researchinstitute of Land and Resource of Henan Province,Zhengzhou 450016,China;2.School of Water Conservancy and Environment Engineering,Zhengzhou University,Zhengzhou 450001,China;3.Institute of Geological Survey of Henan Province,Zhengzhou 450007,China)
关键词:
NO3--N;spatial variability;regionalized variable theory;semi-variance analysis
摘  要:
One hundred soil samplers at a plot of 10 m×10 m were made at an interval of 1 m with different soil moisture and different time.The NO-3-N in surface soil(10 to 15 cm) were measured.The author analyzed experimental data by the theory of regionalized variable theory and studied the spatial variations of NO3--N in the field.The results showed that the NO3--N at different soil moisture had spatial variability in a given spatial range.The semi-variances of NO3--N were increased with the increase of the lag(h).Fitting the results with linear regressions,the parameters of the semi-variograms were estimated,and their variable extent and space correlative scale were made.

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