Environmental Factors and Soil CO₂ Emissions in an Alpine Swamp Meadow Ecosystem on the Tibetan Plateau in Response to Experimental Warming

Figure 7

Path diagrams showing the effects of air temperature (), 5 cm depth soil temperature (), 5 cm depth soil water content (SWC), and plant biomass (biomass) on ecosystem CO₂ efflux (CO₂ flux) during the growing season in plot CK (a), OA (b), and OB (c). The thicknesses of the arrows and the adjacent values represent the path coefficients. The analysis was based on the daily average values of all variables.

(a)

(b)

(c)