Which mechanism causes decreased soil fertility following intensive agriculture on loess deposits?

💡 Explanation

Soil fertility plummets because cultivation leads to loess structure pulverization compaction, decreasing aeration and water infiltration, therefore reducing root penetration; pulverization changes the physical properties, rather than primarily depleting initial minerals or soil biota.

• Which increased risk occurs when fjord sediment destabilizes?
• Which outcome occurs when lahars flow into established riverbeds?
• Which risk escalates dramatically where loess deposits form thick, unconsolidated layers?
• Which risk increases when surface winds weaken over the North Pacific subtropical gyre?
• Which outcome is intensified by the Ekman spiral effect in mid-latitude North Atlantic gyres?
• Which climatic effect results when volcanic aerosols remain suspended in atmosphere after large eruption?