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对潮土区和黑土区的土壤样品进行采集和分析,结合第二次土壤普查资料,研究潮土区和黑土区土壤有机质的时空变化特征。结果表明潮土区土壤有机质含量呈现提高的趋势,黑土区土壤有机质含量呈现降低的趋势。出现这种变化的结果都与耕作制度,尤其是施肥管理水平等人为因素有密切的关系。
The soil samples from the shale soil and black soil area were collected and analyzed. Based on the second soil census data, the temporal and spatial variation characteristics of soil organic matter in the shale soil and black soil area were studied. The results showed that soil organic matter content in Chao soil showed an increasing trend, and soil organic matter content in black soil showed a decreasing trend. The results of such changes are closely related to human factors such as farming system, especially fertilization management level.