soil factors造句怎么写

4、Experimental plots were established for thinning effects on stand and tree growth, tree species composition, species diversity and soil factors etc. in the mixed larch-spruce-fir stands which originated from planted larch pure forest by observations for 12 years after thinning.

2、Table 1 Resource gradients division of soil factors. The same values in adjacent grades are assigned to the lower grade.

1、Soil respiration of plantation Robinia pseudoacacia L forest and its relationship with soil factors in the Loess Plateau

3、Investigation of the soil factors showed that the aeration and water perviousness of mixed forest were better than that of pure forest.