Study on Ecological Service Value of Climate Regulation in Zhoukou Section of Shaying River Trunk Stream

To estimate the service value of rivers for regional climate regulation, temperature, water vapor pressure difference, water air temperature difference and wind speed were selected as the main factors affecting river evaporation and the corresponding calculation model was proposed by Pearson correlation analysis with the Zhoukou section of Shaying River being taken as an example. It was 0.9013 that the calculation accuracy of Nash efficiency coefficient (NSE) for the model. The temperature and humidity index and comprehensive comfort index were used to define the boundary of positive and negative values of the model. According to the model, it was calculated to be 112.8 million yuan that ecological value of Zhoukou Channel for local climate regulation in 2021. The results of this study can provide reference for the study of river ecological base flow and ensure the healthy and sustainable utilization of river system.