Seasonal dynamics and impact factors of urban forest CO₂ concentration in Harbin, China

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• 作者：Wenyu Zheng ; Yunwei Zhou ; Han Gu ; Zhongping Tian
• 关键词：CO2 concentration ; Ecological benefits ; Green land ; Impact factors ; Plant communities
• 刊名：Journal of Forestry Research
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：1
• 页码：125-132
• 全文大小：
• 刊物主题：Forestry;
• 出版者：Springer Berlin Heidelberg
• ISSN：1993-0607
• 卷排序：28

文摘

CO₂ concentrations in different plant communities (larch, birch, lilac, and grassland) were measured during the growing season in the Heilongjiang Forest Botanical Garden to study diurnal variation, seasonal and annual dynamics and factors that impact CO₂ concentration in different spaces. CO₂ concentration in different communities in green lands had an obvious diurnal variation, chronically decreasing, and temperature influenced the lilac area and the grassland. Seasonally, CO₂ was lowest in the larch green land (344.03 ± 23.03 μmol/mol) and highest in the grassland (360.13 ± 22.43 μmol/mol). The overall trend in CO₂ concentration was autumn > spring > summer; temperature is the main factor controlling variation in CO₂ concentrations during the growing season; the CO₂ concentration at the larch, birch, lilac, and grassland types of sites was negatively correlated with land surface temperature and air temperature, and the CO₂ concentration at the larch and birch sites was positively correlated with atmospheric pressure. Without any obvious annual change law, further study and observation are needed.