摘要
由于非破坏性取样测定土壤容重是一项困难、昂贵、费时和不符合实际的工作。为克服这些困难,国外学者已经研究出多种与土壤有机质或有机碳含量和土壤质地有关的传递函数去估计其研究范围内的土壤容重。本文利用河北省第二次土壤普查资料中的土壤有机质和质地数据,对已有的13种土壤传递函数模拟的结果进行对比,确定最佳传递函数形式后,用SPSS统计分析软件进行回归分析,求得适宜河北省土壤容重的传递函数表达式。
Collection of non-destructive soil core samples for the determination of bulk densities is difficult, costly, time-consuming and often impractical. To overcome these difficulties, several attempts were made in the past to estimate soil bulk densities in different regions through pedo-transfer functions （PTFs）, which related to the soil texture and organic matter or organic carbon content data. Based on soil texture and organic matter content data in the Second Soil Investigation of Hebei province, this study compared the existing thirteen PTFs, then confirmed the utilized model and made stepwise regression by using the statistic analysis software of SPSS to find a new pedo-transfer function.
出处
《土壤通报》
CAS
CSCD
北大核心
2008年第1期33-37,共5页
Chinese Journal of Soil Science
基金
国家重点基础研究发展规划资助项目(2005CB121107)
河北农业大学博士启动基金资助
关键词
土壤
容重
传递函数
Soil
Bulk density
Pedo-transfer function
