Fig. 3: Regional heterogeneity analysis of temperature impacts on water quality at 15-day scales. | Communications Earth & Environment

Fig. 3: Regional heterogeneity analysis of temperature impacts on water quality at 15-day scales.

From: Non-linear relationships between air temperature and river water quality revealed by a panel dataset of 276 Chinese cities

Fig. 3

Estimates of the effects of the a linear and b quadratic terms of temperature when dividing the data according to geographic distribution. Estimates of the effects of the c linear and d quadratic terms of temperature when dividing the data according to the Yangtze and Yellow Rivers. The point estimates show the average effects of temperature under different groups, and the error bars represent the 90% confidence interval of the effect. The effects are estimated based on Eq. (1) The estimates reflect how water quality in each region responds to temperature according to the regional classification.

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