Table 2 Summary of variables used in the meta-regression model

Variables	Characteristics	Description
In (WIP)a	Dependent variable	Unit: Won/km2
Regulation services	Dummy	Regulation services=1 or not=0
Supporting services	Dummy	Supporting services=1 or not=0
Cultural services	Dummy	Cultural services=l or not=0
Urban green space	Dummy	Urban green space=l or not=0
Urban forests	Dummy	Forests=l or not=0
Others	Dummy	Others=l or not=0