Ozone and ozone injury on plants in and around Beijing, China

Abstract

a b s t r a c tOzone (O 3 ) levels were assessed for the first time with passive samplers at 10 sites in and around Beijing in summer 2012. Average O 3 concentrations were higher at locations around Beijing than in the city center. Levels varied with site locations and ranged from 22.5 to 48.1 ppb and were highest at three locations. Hourly O 3 concentrations exceeded 40 ppb for 128 h and 80 ppb for 17 h from 2 to 9 in August at one site, where it had a real-time O 3 analyzer. Extensive foliar O 3 injury was found on 19 species of native and cultivated trees, shrubs, and herbs at 6 of the 10 study sites and the other 2 sites without passive sampler. This is the first report of O 3 foliar injury in and around Beijing. Our results warrant an extensive program of O 3 monitoring and foliar O 3 injury assessment in and around Beijing.

Chronic drought stress reduced but not protected Shantung maple (Acer truncatum Bunge) from adverse effects of ozone (O3) on growth and physiology in the suburb of Beijing, China

“…Also, through ozonesonde measurements from 2002 to 2010, the summer O 3 maximum concentration in Beijing frequently exceed 120 ppb and exceed 160 ppb in some cases (Wang et al, 2012b). Recently, Wan et al (2014) reported that the average O 3 levels in Beijing ranged from 22.5 to 48.1 ppb with a maximum value of 195.8 ppb during July to August in 2012. Due to high O 3 concentration, plants injury including native and cultivated trees, shrubs, and herbs have been found widespread in and around Beijing now Wan et al, 2014).…”

“…Recently, Wan et al (2014) reported that the average O 3 levels in Beijing ranged from 22.5 to 48.1 ppb with a maximum value of 195.8 ppb during July to August in 2012. Due to high O 3 concentration, plants injury including native and cultivated trees, shrubs, and herbs have been found widespread in and around Beijing now Wan et al, 2014). Therefore, there is an increasing concern about O 3 damage to forest trees.…”

Limited effect of ozone reductions on the 20‐year photosynthesis trend at Harvard forest

“…Such differences reflect the steady‐state effect of 100 model years of chronic O 3 exposure at the present‐day pollution level. This long‐term damage results from the weakened carbon pool for allocation processes and is different from the observed leaf injury caused by O 3 (Wan et al ., ).…”

Scientometrics of Forest Health and Tree Diseases: An Overview

“…However, research on the links between forest health and air/soil pollution continued after the 1980s [40][41][42]. The forest damages due to air pollution currently observed in China [43][44][45] do not seem to be leading to a resurgence in the literature of the use of the term "Waldsterben". …”

“…However, research on the links between forest health and air/soil pollution continued after the 1980s [40][41][42]. The forest damages due to air pollution currently observed in China [43][44][45] do not seem to be leading to a resurgence in the literature of the use of the term "Waldsterben". , of the number of studies retrieved with the keywords "ash dieback" (total = 98) and the names of its causal agent ("Chalara fraxinea" OR "Hymenoscyphus pseudoalbidus" OR "Hymenoscyphus fraxineus") (total = 111), an ascomycete shown in 2006 to be responsible for the dieback of Fraxinus excelsior in Europe [30][31][32].…”