Chongqing Wulong Mugen Weather

For alpine moss, the living environment may be very bad, because the soil layer of alpine tundra is very thin and the bottom is barren volcanic rock. The climate here is very cold, but the ultraviolet rays are very strong. The snow melts in June every year, but the mountain is closed in June 5438+ 10. In this short growth period of more than three months, nearly half of the time is heavy rain and windy weather. In China, alpine tundra is only distributed on two mountains, one is Altai Mountain and the other is Changbai Mountain in the northeast of China. Xianmu is actually an evergreen shrub.

It is about 10 cm high, with woody roots, stems clustered or crawling on the ground, and many branches at the base. Leaves alternate, oval or nearly round, dark green on the surface, white hairs on the back, petiole membrane, lanceolate, inserted in petiole, persistent, solitary flower, pedicel densely covered with white hairs, only one of two, petals 6- 10, usually 8, white, intermittent yellow, stamens golden yellow, free, achene persistent, oval, free.

The flowering period is from July to August, and the fruiting period is about 8 months. Before introducing Xianmu, let's learn about the tundra. Tundra, also known as tundra, is a biological community that grows on extremely cold permafrost. It is mainly composed of lichens, mosses, perennial herbs and shrubs. The permafrost zone is distributed in polar or alpine permafrost regions, and the polar permafrost zone is located in the east of the polar region with high wind speed.

And there are obvious polar phenomena day and night. The polar permafrost zone is in winter all the year round, the annual average temperature is lower than 0℃, and the summer temperature is only 0 ~ 10℃. In the plant kingdom, different plants adapt to different living environments. In warm, humid and fertile soil, plants flourish and have a wide variety. In high latitudes and cold places, there are few plants, and only cold-tolerant varieties can survive bravely. ?

Why the plant fairy wood on the tundra is a symbol of cold climate is explained here today.