Diurnal Variation of Volatile Organic Compounds in Recreational Forests and Its Relationship with Microclimate Factors

• 作者: DAI Ziyun DUAN Minjie REN Binbin WANG Cheng WANG Qian ZHANG Zhongxia
• 来源期刊: 景观研究:英文版
• 学科: 地球科学
• 关键词: SUMMER RECREATIONAL FOREST VOLATILE organic compound DIURNAL variation
• 年，卷（期）: 2019,（6）
• 页码范围: 77-79
• 页数: 3页
• 分类号: X51

摘要

This study used the dynamic headspace adsorption(DHS) to collect volatile organic compounds(VOCs) released from the Fokienia hodginsii forest in summer, and analyzed the the composition and concentration of VOCs and their correlation with environmental factors. The results showed that: there were 165 types of VOCs in the Fokienia hodginsii forest;the diurnal variation of the concentration of total volatile organic compounds(TVOCs) was "W"-shaped, the concentration reached its peak at 13:00–15:00 and its trough at 1:00–3:00;VOCs beneficial to human health mainly appeared at 13:00, while VOCs harmful to human health chiefly occurred at 11:00–19:00. The correlation analysis between the concentration of VOCs and climatic factors indicated that the concentration of VOCs was basically proportional to the temperature and illumination intensity and inversely proportional to the humidity and wind speed. In other words, the diurnal variation of the concentration was consistent with the diurnal variation of temperature and illumination intensity.