Journal
JOURNAL OF FORESTRY RESEARCH
Volume 28, Issue 1, Pages 125-132Publisher
NORTHEAST FORESTRY UNIV
DOI: 10.1007/s11676-016-0300-8
Keywords
CO2 concentration; Ecological benefits; Green land; Impact factors; Plant communities
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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 mu mol/mol) and highest in the grassland (360.13 +/- 22.43 mu mol/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.
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