中文摘要：

该文研究了郑州市城市化过程中土壤肥力质量时空变化及时空分布，结果表明：20多年来，随着土地利用集约度的不断提高，土壤有机质、全氮、速效钾含量都有所提高，仅有速效磷含量有所降低。土壤的综合肥力系数在东北西南方向较低，大面积处在差的水平，其中有少数零星分布的较高肥力。东南和西北方向的肥力较高，大部分处在良与中的水平。

英文摘要：

A study on the change of suburb soil quality and distribution in space - time for the last 20 years was conducted. The results showed that soil organic matter, total nitrogen, and available -K were improved to some extent, but the content of available - P that was reduced. The coefficients of comprehensive soil fertility in the direction from southwest to northeast was relatively low, however they were relatively high in the direction from southeast to northwest.