中国地级城市建成区蓝绿空间时空格局及其气候影响因素分析
张歆越, 高晓路, 柴琪, 宋敦江

Analyzing Spatial-Temporal Pattern and Climate Factors of Blue-Green Space in Urban Built-Up Areas in Prefecture-level Cities in China
ZHANG Xinyue, GAO Xiaolu, CHAI Qi, SONG Dunjiang
图2 基于Densi-Graph的城市建成区边界提取示例[27]
Fig. 2 Examples of extracting boundary of urban built-up area[27]