Also called beach fencing. It’s to prevent trash from blowing -onto a beach, it creates a wind brake to prevent sand from blowing into parking lots, and it can prevent seaweed from washing off of a beach during storms. It’s cheap and easy to replace.

Idk what the name of it is but as far as purpose it’s a cheap fence that’s easy to setup, digging footings for posts for your average residential fence can be a pain + expensive

looks like a snow fence to keep snow from drifting up into large piles on the pathway behind it