Jingbo is after five times volcanic eruptions, formed by blocking rivers by the lava mountain, is one of the few alpine lakes in the world. Jingbo belongs to the nutrition of lake, in the form of eutrophication for half a year, 7, 8, 9 three months, the worst is mainly high phosphorus content; Winter temperature of 0 ~ 0.8 ℃ (surface), the summer surface temperature up to 27 ℃, the whole lake, annual average temperature 2.5 ℃, the water temperature stratification, water stratified period for every year from may to September, between the thermocline appeared in the July 10 to 21 m, 11 m, average depth temperature decline rate is 0.79 ℃ / m, September thermocline depth of 19 ~ 31 m, down than July 10 m or s。