干旱地区农业研究2011，Vol.29Issue(2)：152-158,7.
伊犁河谷土壤含盐量空间变异和格局分析
Study on spatial variability and patterns of soil salinity in he Ili River Valley
摘要
Abstract
The spatial variability of soil salinity in different soil layers, in the Iii River Valley as an example, was quantificationally analyzed by means of GPS and GIS technology, based on the regionalized variable theory, using the semivariograms and the Kriging method of geostatistics. The results showed that the semivariograms of soil salinity in 0 ～20 cm, 20 ～ 40 cm and 60 ～ 80 cm fitted the spherical model while the semivariograms of soil salinity in 40 ～ 60 cm fitted the Gause model. The autocorrelation range of soil salinity in different soil layers had apparent differences, and the autocorrelation renge of soil salinity increased from the top layer to the deeper ones. Analysis of the spatial pattems of soil salinity indicated that high values of soil salinity were mainly distributed on the lower-lying areas. On the vertical direction, the salinity of surface soil (0 ～ 20 cm) was the highest and it decreased gradually with the increase of soil depth.关键词
地统计学/土壤盐分/空间变异/Kriging插值/伊犁河谷Key words
geostatistics/ soil salinity/ spatial variability/ Kriging method/ the Ili River Valley分类
农业科技引用本文复制引用
古丽娜尔·托合提,海米提·依米提,米日姑·买买提,祖皮艳木·买买提..伊犁河谷土壤含盐量空间变异和格局分析[J].干旱地区农业研究,2011,29(2):152-158,7.基金项目
国家科技支撑计划项目(2007BAC15B02) （2007BAC15B02）
新疆绿洲生态教育部重点实验室开放课题(XJDX0201-2008-05) （XJDX0201-2008-05）
