Abstract:

In this paper, the relationships between meso-microfauna and soil ecological factors in various types of vegetation were discussed. The major results are as follows,

1. Vertical and horizontal quantity distributions of mesomicrofauna in the different habitats were not only conditioned by a certain single ecological factor,but were also the result of the combined effect of many ecological factors.

2. There were different relations between the meso-microfauna and the organic matter content of soil in different ecological conditions.

3. The vertical quantity distribution of the meso-microfauna in the sandy land of Festuca dahurica grassland depended probably upon changes of soil temperature. That is why the sandy land has a particular pattern.

4. The responses of the meso-microfauna to the man-made changes of the ecological factors were sensitive in the grassland ecosystem.