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冲积平原上区域土壤质地层次的某些分布特征
引用本文:李保国,李卫东,石元春.冲积平原上区域土壤质地层次的某些分布特征[J].土壤学报,1998,35(4):433-440.
作者姓名:李保国  李卫东  石元春
作者单位:[1]中国农业大学土壤和水科学系 [2]中国科学院地理研究所
基金项目:*国家自然科学基金(批准号:49391601)
摘    要:本文根据冲积平原区上一个15平方公里区域内格网化布点的大量土壤剖面质地层次的观测数据,采用地统计学方法研究区域粘土层一些指标值的空间变异结构,通过概率统计研究了区域内几种地质类型层次厚度的概率分布特征。研究结果表明,第一粘土层厚度,第一粘土层出现深度,1米内粘土层总厚度和2米内粘土层总厚度的最大相关距离均在1500米-2000米之间,各种类型质地层厚度的概率分布均具有对数正态分布的特点。

关 键 词:冲积平原  区域土壤  质地层次  空间变异  概率分布
收稿时间:1/3/1997 12:00:00 AM
修稿时间:1998/2/14 0:00:00

SOME DISTRIBUTION FEATURES OF TEXTURAL LAYERS OF REGIONAL SOILS IN A FLUVIOGENIC PLAIN
Li Bao-guo,Li Wei-dong and Shi Yuan-chun.SOME DISTRIBUTION FEATURES OF TEXTURAL LAYERS OF REGIONAL SOILS IN A FLUVIOGENIC PLAIN[J].Acta Pedologica Sinica,1998,35(4):433-440.
Authors:Li Bao-guo  Li Wei-dong and Shi Yuan-chun
Affiliation:Dept. of Soil and Water Sciences, China Agricultural University, Beijing 100094;Institute of Geography, Chinese Academy of Sciences, Beijing 100101;Dept. of Soil and Water Sciences, China Agricultural University, Beijing 100094
Abstract:Based on observed data of textural layers from a lot of soil profiles in a 15km2 area in a fluviogenic plain (North China Plain),this paper deals with spatial variations of some indexes of clay layers and probability distribution characteristics of different types of textural layers in the area by geostatistical method and general probability statistics.The results show that the maximum relative distances of the thickness and emerging depth of first clay layers,and the total thickness of clay layers in lm depth and 2m depth are all in the range of 1500-2000m,and that the thickness of each type of textural layers is distributed lognormally.
Keywords:Fluviogenic plain  Regional soils  Textural layer  Spatial variability  Probability distribution
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