| Title: | [Emission Characteristics of Biogenic Volatile Compounds (BVOCs) from Common Greening Tree Species in Northern China and Their Correlations with Photosynthetic Parameters] |
| Author(s): | Xu Y; Li SJ; Yuan XY; Feng ZZ; |
| Address: | "Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Institute of Ecology, School of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China" |
| DOI: | 10.13227/j.hjkx.202001180 |
| ISSN/ISBN: | 0250-3301 (Print) 0250-3301 (Linking) |
| Abstract: | "In order to understand the emission characteristics of common greening trees in Beijing and analyze their correlations with photosynthetic parameters, including the net photosynthetic rate (P(n)), stomatal conductance (g(s)), intercellular CO(2) concentration (c(i)), and transpiration rate (T(r)), we collected samples of biogenic volatile organic compounds (BVOCs) using a dynamic sampling technique from 14 species of deciduous trees. The results showed that there were significant differences in isoprene and total BVOC emissions between family or genus levels (P<0.01). With the exception of Lonicera maackii Maxim and Ulmus pumila L., all species were found to emit isoprene, monoterpenes, and sesquiterpenes, of which, species from the Salicaceae (e.g., Populus deltoides cv. '55/56'x P.deltoides cv. 'Imperial', P. euramericana cv. '74/76', Populus simonii Carr, and Salix babylonica) and Legume (Sophora japonica, Robinia pseudoacacia, and S. japonica Linn. var. japonica f. pendula Hort) families were the higher isoprene emitters, with emission rates that ranged from (30.1+/-4.3) mug.(g.h)(-1) to (91.8+/-10.0) mug.(g.h)(-1). Plants from the Oleaceae (e.g., Fraxinus chinensis Roxb and Syringa oblata Lindl), Begonia (Malus prunifolia), Sapindaceae (Koelrenteria paniculate), and Aceraceae (Acer truncatum Bunge) families mainly emitted monoterpenes and sesquiterpenes. Among them, Fraxinus chinensis Roxb and Acer truncatum Bunge were the highest emitters with emission rates of (10.6+/-4.8) mug.(g.h)(-1) and (11.8+/-6.4) mug.(g.h)(-1), respectively. Ocimene and beta-pinene were the two main monoterpenes emitted from greening tree species. No significant correlations were found between the emission of BVOCs and P(n) or g(s), while the emission rate of isoprene (r=0.681; P<0.01) and the total BVOC (r=0.698; P<0.01) from the Salicaceae family increased with increasing T(r). Moreover, leguminous plants showed a significant positive correlation between the total BVOC emission rate and c(i) (P=0.04). This study provides a scientific reference for the selection and configuration of urban greenery, and a theoretical basis for exploring the mechanism of BVOC emissions" |
| Keywords: | *Air Pollutants/analysis Beijing China Trees *Volatile Organic Compounds/analysis biogenic volatile organic compounds (BVOCs) correlation greening tree species isoprene and monoterpenes photosynthetic parameters; |
| Notes: | "MedlineXu, Yan Li, Shuang-Jiang Yuan, Xiang-Yang Feng, Zhao-Zhong chi China 2020/10/31 Huan Jing Ke Xue. 2020 Aug 8; 41(8):3518-3526. doi: 10.13227/j.hjkx.202001180" |
