Theory Research on Green Infrastructure: Taking Green Land System Planning of Cixi City in Zhejiang Province as an Example

Every city faces disordered expansion and environment worsening. Researching urban green land system planning will contribute to improve people’s living quality, and maintain the stability and healthy development of urban ecosystem. Taking Cixi city in Hangzhou bay area as an example, this paper analyzes problems of green land conditions and spatial distribution based on the green infrastructure theory and Geographic Information System (GIS) technique. The goal of preferentially protecting urban ecology is presented. The connection corridors of urban green land are planed. The nonlinear green land network centers are integrated. Therefore, the system function of city maintenance and ecological environment protection is completely improved.