Figure 5
From: Productivity depends more on the rate than the frequency of N addition in a temperate grassland
Relationships between changes in the top 10 cm soil characteristics and community ANPP across 2012–2013. Soil characteristics
, (a), soil water content, (b), soil temperature, (c), soil pH, (d), soil NH4+–N and (e), soil NO3−–N, respectively. In d and e, soil NH4+–N and soil NO3−–N were log10 transformed to meet the normality and homogeneity. F-ratio was given for the result of analysis of covariance of the two slopes in each subplot. ns and **: statistically significant at P > 0.05 and P < 0.01, respectively.
