Elf World: Productivity without Rearrangement?

There are many movies and books that made an attempt at imagining the Garden of Eden/Elf world. Avatar and Lord of the Rings come to mind immediately. There's a similar race of beings in Stargate SG-1, the Nox. Native americans and other indiginous people are often depicted as in-tune with nature or a part of nature and as opposed to technological and industrial civilization.

These characters are often passive and or backdrop characters to the main action in a plot, because they're sort of a stand in and characterization of Nature. They're also pretty vaguely imagined because there's no Elf World or Garden of Eden canon to draw upon, while the Atlantis and city on a hill world has been a topic of thought and discussion for thousands of years.

There are basically two categories of strategies that one can imagine for Elf World agriculture. One is to maximize the productivity of a small area by intensive arrangement of materials and systems, which then opens up larger areas for wild plants and animals. The other is in-nature agriculture, with some clever method of harvesting and storing crops that's not resource intensive at all.

In the Avatar world, the creatures live in a world of overflowing abundance, so nature provides everything they need to survive and thrive without any technology or artifice. Even their transportation is provided for by nature.

Can you have high agricultural productivity without arranging resources for convenient harvest, or without at the minimum building a fence? Probably not.