What ecosystems are there and how are they different?

Ecosystems are: Natural and Artificial.
A natural ecosystem is characterized by the following features: high species diversity, closed or balanced cycle of substances, use of solar energy, predominance of natural selection, well-developed self-regulation, long and branched food chains. Summarizing all of the above, we can say that the natural system is stable.
An artificial ecosystem is characterized by the following signs: the predominance of monoculture, an open or unbalanced cycle of matter, the use of solar energy and other types of energy, the existence of natural and artificial selection, poorly developed self-regulation, short and non-branched networks of attraction.
Examples of natural ecosystems: meadow, forest.
An example of an artificial ecosystem: the field.