Soil mesofauna in 4 types of soil gradient in acidity was investigated in beach land of Eastern Shanghai in 1999.
1999年，对上海浦东滩涂4类不同酸碱度土壤中的中型土壤动物进行了调查。
The soil mesofauna tends to gather on soil surface, but the vertical migrating greatly varies in different seasons affected by climate condition, edatope, artificial factor and so on.
土壤动物具有表聚性，但是在不同季节，由于受气候条件、土壤环境、人为因素的影响，土壤动物的垂直分布有明显变化。
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