N2O Emissions from an Apple Orchard in the Coastal Area of Bohai Bay, China
Figure 2
(a) Daily precipitation and average air temperature, (b) soil moisture (WFPS, i.e., the water-filled pore space) and soil temperature at 10 cm depth in site A (under the middle of an apple tree canopy), (c) N2O fluxes from SN, and (d) N2O fluxes from CK. The N2O data are the means and standard errors (the vertical bars) of three replicates. SN-A means site A (the fertilization area in an apple tree canopy projection area) in SN treatment. SN-B means site B (the unfertilization area in an apple tree canopy projection area) in SN treatment. CK-A and CK-B mean sites A and B in CK treatment, respectively. The downward arrows indicate the time of fertilization.
