Evaluation of the impacts of ozone on the vegetation productivity of woodland and grassland ecosystems in China

Qinyi, WANG; Mei, HUANG; Shaoqiang, WANG; Bin, CHEN; Zhenhai, LIU; Zhaosheng, WANG; Shiliang, CHEN; Hui, LI; Tongtong, ZHU; Donghui, LI; Yuelin, LI; Hu, Lin; Leigang, Sun

doi:10.1016/j.ecolmodel.2023.110426

Ecological Modelling

2023

DOI: 10.1016/j.ecolmodel.2023.110426

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Evaluation of the impacts of ozone on the vegetation productivity of woodland and grassland ecosystems in China

WANG Qinyi,

HUANG Mei,

WANG Shaoqiang

et al.

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2024

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Cited by 3 publications

References 60 publications

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Reduced productivity and carbon drawdown of tropical forests from ground-level ozone exposure

Cheesman,

Brown,

Artaxo

et al. 2024

Nat. Geosci.

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Elevated ground-level ozone, a result of human activity, is known to reduce plant productivity, but its influence on tropical forests remains unclear. Here we estimate how increased ozone exposure has affected tropical-forest productivity and the global carbon cycle. We experimentally measure the ozone susceptibility of various tropical tree species, and then incorporate these data into a dynamic global vegetation model. We find that current anthropogenic-derived ozone results in a substantial decline in annual net primary productivity (NPP) across all tropical forests, with some areas being particularly impacted. For example, Asia sees losses of 10.9% (7.2–19.7%) NPP. We calculate that this productivity decline has resulted in a cumulative loss in carbon drawdown of 0.29 PgC per year since 2000, equating to ~17% of the tropical contemporary annual land carbon sink in the twenty-first century. We also find that areas of current and future forest restoration are disproportionately affected by elevated ozone. Future socioeconomic pathways that reduce ozone formation in the tropics will incur benefits to the global carbon budget by relieving the current ozone impacts seen across both intact forest and areas of forest restoration, which are critical terrestrial regions for mitigation of rising atmospheric carbon dioxide.

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Reduced productivity and carbon drawdown of tropical forests from ground-level ozone exposure

Cheesman,

Brown,

Artaxo

et al. 2024

Nat. Geosci.

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Biodiversity in China: challenges, efforts and prospects

Liang,

Zhuang

2024

China Economic Journal

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Analysis of Ozone Pollution Characteristics, Meteorological Effects, and Transport Sources in Zhuzhou, China

Yan,

Luo,

Zhang

et al. 2024

Atmosphere

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Based on the hourly surface ozone (O3) observations and meteorological data from Zhuzhou in 2021, the pollution characteristics and influencing factors of O3 in Zhuzhou were investigated in the study. In addition, the Potential Source Contribution Function (PSCF) and Concentration Weighted Trajectory (CWT) analysis methods were employed to analyze the transmission paths and potential pollution sources of O3 pollution in Zhuzhou. The results showed that the total number of days with O3 exceeding the standard at all monitoring stations in Zhuzhou was 142 days in 2021. The overall air quality was less affected by SO2, NO2, and CO, and the trend of O3 pollution was still increasing. The concentrations of O3, CO, and NO2 varied significantly in different months, and the variation of O3 exhibited a “double-peak” pattern, with the peak value occurring in September. The O3 concentration in urban areas was significantly higher than that in suburban areas. Meteorological conditions had a significant impact on the degree of O3 pollution in Zhuzhou. The average wind speed in Zhuzhou throughout the year was 1.7 m/s, and the prevailing wind direction in summer was southeast, with a frequency of 16%. O3 pollution was mainly transported by short-distance airflow during the over-standard periods in 2021, accounting for 37.64%. The main source of O3 pollutant was from Jiangxi Province in the east, with the shortest distance of regional transport and the highest O3 concentration. In addition, transportation from central Guangdong Province, western Jiangxi Province, and central Hubei Province also had a significant impact.

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Evaluation of the impacts of ozone on the vegetation productivity of woodland and grassland ecosystems in China

Cited by 3 publications

References 60 publications

Reduced productivity and carbon drawdown of tropical forests from ground-level ozone exposure

Reduced productivity and carbon drawdown of tropical forests from ground-level ozone exposure

Biodiversity in China: challenges, efforts and prospects

Analysis of Ozone Pollution Characteristics, Meteorological Effects, and Transport Sources in Zhuzhou, China

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