Spatiotemporal Changes of Evapotranspiration in Cities along the Yellow River Basin in Shandong Province from 2000 to 2018

Abstract

Steapotranspiration is an important component of land surface water circulation and surface energy balance. The study of the spatial and temporal change of the cities along the Yellow River basin in Shandong Province is conducive to explore the regional water circulation and the response of the river basin to climate change. Based on the evapotranspiration data, the spatiotemporal distribution and change characteristics of evapotranspiration in cities along the Yellow River basin in Shandong Province from 2000 to 2018 were analyzed. The results show that (1), the mean value of evaporation in the Yellow River in Shandong Province from 2000 to 2018 was 469.43 mma-1, with large annual variation; (2) high in spring and summer, low in autumn and winter; (3) the highest spatial distribution in July; (5) the decreasing in Jining, Heze, Taian, Zibo, Jinan, Dongying, Liaocheng, Binzhou and Dezhou; and (6) increasing in eastern cities along the Yellow River; the decrease in the west.