Table 3 Model driving force size criterion of interval and interaction.

From: Spatiotemporal changes in habitat quality and driving factors in South Hunan mining urban agglomerations, China

Criterion of interval

Interaction

\(\:\text{q}\left({\text{X}}_{1}{\cap\:\text{X}}_{2}\right)<\text{M}\text{i}\text{n}\left[\text{q}\left({\text{X}}_{1}\right),\text{q}\left({\text{X}}_{2}\right)\right]\)

Nonlinear weakening

\(\:\text{M}\text{i}\text{n}\left[\text{q}\left({\text{X}}_{1}\right),\text{q}\left({\text{X}}_{2}\right)\right]<\text{q}\left({\text{X}}_{1}{\cap\:\text{X}}_{2}\right)<\text{M}\text{a}\text{x}\left[\text{q}\left({\text{X}}_{1}\right),\text{q}\left({\text{X}}_{2}\right)\right]\)

Unilinear reduction

\(\:\text{q}\left({\text{X}}_{1}{\cap\:\text{X}}_{2}\right)>\text{M}\text{a}\text{x}\left[\text{q}\left({\text{X}}_{1}\right),\text{q}\left({\text{X}}_{2}\right)\right]\)

Bilinear enhancement

\(\:\text{q}\left({\text{X}}_{1}{\cap\:\text{X}}_{2}\right)=\text{q}\left({\text{X}}_{1}\right)+\text{q}\left({\text{X}}_{2}\right)\)

Mutual independence

\(\:\text{q}\left({\text{X}}_{1}{\cap\:\text{X}}_{2}\right)>\text{q}\left({\text{X}}_{1}\right)+\text{q}\left({\text{X}}_{2}\right)\)

Nonlinear enhancement