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通过分析山东省禹城市100个采样点1980年和2003年耕层土壤的有机质含量,研究了土壤有机质的时空变异特征,探讨了潮土区有机质含量的变化,形成了研究区1980年和2003年有机质含量空间分布图及1980~2003年有机质含量的空间变化图。分析了研究区有机质含量增加的原因。研究结果表明,该市目前土壤有机质含量平均为14.68g kg-1,比1980年的6.0g kg-1增加了8.68 g kg-1,年均提高0.38g kg-1。土壤表层含盐量的降低为土壤养分含量提高提供了条件。
By analyzing the organic matter content of topsoil at 100 sampling sites in Yucheng City of Shandong Province in 1980 and 2003, the temporal and spatial variation characteristics of soil organic matter were studied, and the organic matter content in the tide soil area was discussed. Spatial distribution of organic matter content and spatial variation of organic matter content from 1980 to 2003. The reason for the increase of organic matter content in the study area was analyzed. The results show that the average content of soil organic matter in the city is 14.68g kg-1, which is increased by 8.68g kg-1 compared with 6.0g kg-1 in 1980, with an annual increase of 0.38g kg-1. The reduction of salinity in the soil surface provides the conditions for the improvement of soil nutrient content.