• 关键词：区域分异  趋势面图  等值线图  母质  冲积平原

• 基金项目：

• 李廷芳
• 北京师范学院地理系

• 秦建侯
• 清华大学化学系

• 邓勃
• 清华大学化学系

• 摘要：本文根据计算机绘制的北京平原地区土壤元素等含量线图和趋势面图,揭示了土壤元素的区域分异规律,并对其引起区域分异的环境因素进行了分析。

• Abstract：Isograms and trend charts of element contents in soils of Beijing plain were plotted by computer. The regional distribution of elements in soils of the area was clearly demonstrated by these charts and was analyzed based on the geophysical conditions.

• Key words：soil element content  isogram  trend chart  parent material  computer plotting

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