Is there any specific relationship between floor area ratio and green area in real estate?

It can be said that it has nothing to do with the floor area ratio: for example, if your residential area is 654.38+10,000 square meters and the floor area ratio is 4, then developers can build 400,000 square meters of things to sell. You can give an easy-to-understand example. Without considering the basement area, all the land occupied by the community is used for building and selling. If the plot ratio is 4, you can build 4 floors with 654.38+ 10,000 square meters. The green area is determined by the green rate. For example, when a developer purchases land, it has been confirmed that the green rate is above 30, then the green area must be greater than or equal to the area occupied by the green rate.