Ca2, Mg2, and HCO3-plasma, which ar

Ca2, Mg2, and HCO3-plasma, which are common in the lake water, also have the effect of enhancing short-wave light scattering. At the same time, due to the high transparency of the lake water, the selective absorption and reflection of the gray-white calcareous and yellow-green algae on the bottom of the lake to the transmitted light also increase the level and change of the color of the lake. In addition, the lakes in Jiuzhaigou are located in a deep and undulating canyon. At the same time in different sections and at different times in the same section, the incident angle and amount of sunlight, the reflection of light on the surface of the lake water, and the transparency of the lake water have great changes, thus causing the lake water color to be more changeable and colorful