Spatial and Temporal Variations of Negative Oxygen Ions in the Air and Environmental Influencing Factors in Forest Environment with Different Canopy Densities: A Case Study of Maofeng Mountain in Guangzhou
ZHENG Shiyu, ZHANG Lvshui, GUO Xiaomin, HUANG Zijun, XIAO Yihua
Ecology and Environment . 2021, (11): 2204 -2212 .  DOI: 10.16258/j.cnki.1674-5906.2021.11.011

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