ordinances have caused a decentralized pattern of development by prohibiting the mixing of different kinds of land use.

The statement you provided seems to be a comment on how certain laws or regulations (ordinances) have led to a decentralized pattern of development. This means that instead of having a concentrated or centralized area of development, growth and expansion are spread out or dispersed.

This has been caused by prohibiting the mixing of different kinds of land use. In urban planning, land use refers to the management and modification of natural environment or wilderness into built environment. Different kinds of land use can include residential, commercial, agricultural, and industrial areas.

So, the statement suggests that these ordinances have prevented different types of land use from co-existing in the same area, leading to a more spread out, decentralized pattern of development.

Here's a step-by-step breakdown:

1. Ordinances (laws or regulations) are put into place.
2. These ordinances prohibit the mixing of different kinds of land use (residential, commercial, etc.).
3. As a result, instead of having mixed-use areas, different types of land use are separated.
4. This leads to a decentralized pattern of development, where growth and expansion are spread out rather than concentrated in one area.