A Quantitative Analysis on Ecological Network Construction and Optimization of Urban Green Space in China Based on CiteSpace Knowledge Graph Method

A lot of 1361 research documents related with the construction and optimization of ecological networks were collected from the CNKI database by the CiteSpace knowledge graph method,. The present results indicated that: (1) The number of documents related to urban green ecological networks have grown rapidly over the past thirty years, with an upward trend in the volume of publications. (2) The colleges and research institutions of agricultural and forestry have published the most, with relatively little cooperation between institutions. (3) The different research hotspots of the field in three distinct periods were shown with the expansion and deepening of the research area. "Circuit theory" and "Gravity model" are currently frontier issues in research, indicating that they may become key research directions in the future. This research has extremely important practical significance in guiding urban greening construction, optimizing urban spatial layout, and improving the urban ecological environment.