The analyze of green space need in Surabaya City using Gerarkis Method for 2010–2020

Surabaya City is the second-largest city based on population in Indonesia that affected by development of urban planning city. The areas increase socio-economic and peri-urban demographics but often took over land or green open spaces. It an unavoidable possibility air pollution due to imbalance between oxygen producers existing users. necessary calculate prediction space requirements using Gerarkis Method, which predicts spaces demand number residents, motor vehicles, livestock, industrial factories, hotels. With need for 2010–2020 22,088.89 hectares 31,950.84 with increased majority value area, except 2015 2020, decreased This method proves produced from plants increasing, making needs more make livable.