长三角多维城市化对PM2.5浓度的非线性影响及驱动机制
郭向阳, 穆学青, 丁正山, 秦东丽

Nonlinear effects and driving mechanism of multidimensional urbanization on PM2.5 concentrations in the Yangtze River Delta
GUO Xiangyang, MU Xueqing, DING Zhengshan, QIN Dongli
图3 2000—2017年长三角PM2.5浓度冷热点空间分布特征
Fig. 3 Spatial distribution of cold and hot spots of PM2.5 in the Yangtze River Delta in 2000-2017