Linked from
The 10 pages that link to Soil aeration, each with the reason it gives.
Soil compactionRelated: Compaction restricts oxygen supply and carbon dioxide release in root zones.
Soil structureRelated: Air-filled pores provide oxygen needed by roots and soil organisms.
WaterloggingRelated: Water fills soil pores that would otherwise carry oxygen to roots.
AardvarkRelated: Repeated digging can loosen and aerate soil around aardvark foraging sites.
LoamRelated: Loam’s connected pores can supply oxygen to roots and soil organisms.
Raised fieldRelated: Better drainage can increase air in the root zone and reduce waterlogging.