The image is a display board with a green background and white text. On the left side of the board, there is a diagram of a tree with three circles representing different types of plants. The circles are arranged in a circular pattern, with the largest circle in the center and the two smaller circles on either side. 

The first circle is labeled "Evaporation (ET)", the second circle is titled "Capillaries", and the third circle is labelled "Root pressure". The tree has a long trunk and branches, and the leaves are a light green color. The background is dark green, and there are a few lights visible in the background. The text on the board is written in Chinese characters.