Fig. 4From: Comparative assessment of net CO2 exchange across an urbanization gradient in Korea based on eddy covariance measurementsNet CO2 fluxes and standard deviation of random flux error. The HU, SU, CP, and SF sites are high-rise residential urban, suburban, cropland, and subtropical forest areas, respectively. Colored lines come from the linear regression of the data at the sites in Table 3Back to article page