撤县(市)设区对城市空间扩展的影响机理——以杭州市为例
陈妤凡, 王开泳

Influence and mechanism of "Turning Counties (Cities) into Districts" on urban space expansion:Taking Hangzhou as a case study
Yufan CHEN, Kaiyong WANG
图3 1990-2015年杭州建设用地扩展空间密度分布
Fig. 3 Spatial density distribution of construction land in Hangzhou in 1990-2015