Influence of physiological and environmental factors on the diurnal variation in emissions of biogenic volatile compounds from Pinus tabuliformis

作     者：Jungang Chen Huaxing Bi Xinxiao Yu Yanlin Fu Wenchao Liao 

作者机构：College of Soil and Water Conservation Beijing Forestry University Institute of Ecology College of Urban and Environmental Sciences and Key Laboratory for Earth Surface Processes of the Ministry of Education Peking University Ji County Station Chinese National Ecosystem Research Network (CNERN) Key Laboratory of State Forestry Administration on Soil and Water Conservation Beijing Forestry University Beijing Engineering Research Center of Soil and Water Conservation Beijing Forestry University Engineering Research Center of Forestry Ecological Engineering Ministry of Education Beijing Forestry University Beijing Collaborative Innovation Center for Eco-Environmental Improvement With Forestry and Fruit Trees Beijing Water Consulting Co. LTD 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2019年第31卷第7期

页      面：102-118页

核心收录：

学科分类：0907[农学-林学] 07[理学] 08[工学] 0829[工学-林业工程] 09[农学] 0903[农学-农业资源与环境] 0713[理学-生态学] 

基　　金：supported by the Natural Science Foundation of China(Nos.31800377,31470638) the National Key Research and Development Program of China(No.2016YFC0501704) the National Science and Technology Program of China(No.2015BAD07B0502) the National Key Research the Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees(No.PXM2016014207000038) the Special Foundation for Beijing Common Construction Project 

主　　题：Biogenic volatile organic compounds Pinus tabuliformis Emission rate Monoterpenes 

摘      要：Biological volatile organic compounds(BVOCs) have a large influence on atmospheric environmental quality, climate change and the carbon cycle. This study assesses the composition and diurnal variation in emission rates of BVOCs from Pinus tabuliformis, using an enclosure technique. Environmental parameters(temperature and light intensity) and physiological parameters(net photosynthetic rate, P_n; stomatal conductance, g_s; intercellular CO_2 concentration, C_i; and transpiration rate, T_r) that may affect emission behavior were continuously monitored. The 10 most abundant compound groups emitted by P. tabuliformis were classified by gas chromatography–mass spectrometry. The dominant monoterpenoid compounds emitted were α-pinene, β-myrcene, α-farnesene and limonene. The diurnal emission rate of BVOCs changed with temperature and light intensity, with dynamic analysis of BVOCs emissions revealing that their emission rates were more affected by temperature than light. The variation in monoterpene emission rates was consistent with estimates of P_n, g_s and T_r. Basal emission rates(at 30 °C,) of the main BVOCs ranged from 0.006 to 0.273 μg^(-1)/(hr g),while the basal ER standardization coefficients ranged from 0.049 to 0.144 °C^(-1). Overall, these results provide a detailed reference for the effective selection and configuration of tree species to effectively prevent and control atmospheric pollution.