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2 2000—2023年间汾河流域不同季节PM2.5浓度变化趋势
Fig.2 Trends in seasonal PM2.5 mass concentrations in the Fenhe River Basin from 2000 to 2023