Question

Let's assume that you could observe a soil over a 50-year period of time. The soil initially has a granular structure in the A horizon and is cultivated every year. Over time, the structure gets smaller and smaller. Assuming the only significant change in the soil is the structure, how will the bulk density (Db) of the soil change?

[]bulk density will decrease

[]bulk density will increase

[]no change in bulk density

Answer 1

Step-by-step explanation:

[X] bulk density will increase

As the soil is cultivated every year and the granular structure in the A horizon gets smaller and smaller over time, the compaction of soil particles will increase. Compaction leads to a decrease in pore space, which means the soil becomes denser, resulting in an increase in bulk density (Db) of the soil.