汾河流域灰绿空间对季节PM2.5 的非线性影响及阈值效应
邓椿, 聂桐, 张仲伍, 孙维峰

Seasonal variations and threshold effects of gray-green space on PM2.5 in the Fenhe River Basin
Chun Deng, Tong Nie, Zhongwu Zhang, Weifeng Sun
图3 2000—2023年汾河流域不同季节PM2.5浓度(μg·m-3)空间分布
Fig.3 The spatial variation of PM2.5 (μg·m-3) from 2000 to 2023